DC2DC Plus Battery Charger

Product Information: Enerdrive DC2DC+ Battery Charger

Thank you for purchasing the Enerdrive DC2DC+ Battery Charger.
This product is designed to provide a multistage, multi-input
battery charger for various types of batteries in your home, boat,
caravan, 4WD, or commercial vehicle. The charger has a
state-of-the-art, easy-to-use design that offers reliable
service.

Product Numbers

• Enerdrive 12V 40+ DC2DC Charger

Service Contact Information

If you have any questions or need assistance, please contact our
service team:

• Phone: [Service Phone Number]
• Email: [Service Email Address]

Disclaimer

Please read and follow the instructions and precautions
carefully to ensure safe and effective use of the battery
charger.

Important Note

Please keep this manual for future reference.

Table of Contents

1. Introduction
2. Warnings
3. Product Description
4. Understanding the Unit
5. Installing the Charger
6. Connecting the Charger
7. Unit Operation
8. Specifications
9. Warranty

Product Usage Instructions

Step 1: Connect Auxiliary Battery to DC2DC output via a 60 amp

fuse

Make sure to connect the auxiliary battery to the DC2DC output
using a 60 amp fuse.

Step 2: Connect Start Battery to DC2DC Input via 70 amp

fuse

Connect the start battery to the DC2DC input using a 70 amp
fuse.

Step 3: Connect Solar Panels to DC2DC Solar Input

Connect your solar panels to the DC2DC solar input.

Step 4: Connect switched ignition source to ignition input

(smart alternator vehicles)

If you have a smart alternator vehicle, connect the switched
ignition source to the ignition input.

Step 5: Start vehicle – check DC2DC is working

Start your vehicle and check if the DC2DC charger is working
properly.

Step 6: DC2DC will go to sleep when not charging after 3-6

minutes

Note that the DC2DC charger will go to sleep mode after 3-6
minutes of not charging.

*For detailed technical information, please refer to the
manual.

If you need further assistance or want to join our tech support
community group, Enerdrive Unplugged, please visit our website or
contact our service team.

Masterclass Videos

• How to Install a DC2DC Charger
• How to install a DC2DC Charger (Smart Alternators)

ENERDRIVE 12V 40+ DC2DC CHARGER
QUICK START GUIDE
Step 1.
Connect Auxiliary Battery to DC2DC output via a 60 amp fuse
Step 2.
Connect Start Battery to DC2DC Input via 70 amp fuse
Step 3.
Connect Solar Panels to DC2DC Solar Input
Step 4.
Connect switched ignition source to ignition input (smart alternator vehicles)
Step 5.
Start vehicle – check DC2DC is working
Step 6.
DC2DC will go to sleep when not charging after 3-6 minutes
*For detailed technical information, please refer to the manual.

Join our tech support community group, Enerdrive Unplugged

Masterclass Video: How to Install a DC2DC Charger

Masterclass Video: How to install a DC2DC Charger
(Smart Alternators)

Page 1

Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

Table of Contents

1. Introduction

4

Please Keep This Manual For Future Reference

4

Disclaimer

4

Important Note

4

Product Numbers

4

Service Contact Information

4

Notice of Copyright

5

2. Warnings

6

Please read and follow the instructions and precautions carefully.

6

3. PRODUCT DESCRIPTION

8

4. UNDERSTANDING THE UNIT

9

Multistage Charging Process – GEL, AGM, Flooded & Program Modes

9

Lithium Charging Process

9

Smart Charging Feature

10

Charger algorithm

10

Lithium Battery charging algorithm

11

Battery Charger Voltage

11

Battery Bank Size Recommendation

12

EN3DC40+ (Current Settings):

12

5. INSTALLING THE CHARGER

13

Mounting The Charger

14

6. CONNECTING THE CHARGER

15

Chassis Grounding Connection

15

DC Output Wiring

15

DC2DC+ Battery Charger Connections

16

Recommended Cable Length, Size and Fuse Protection.

17

Standard Temperature Sensor Connection

18

Battery Wiring (Towing Applications):

19

Battery Wiring (Vehicle & Marine Applications):

20

7. UNIT OPERATION

21

Understanding The Charging Mechanism

21

Operating from a Start Battery / Alternator (CH3)

21

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

DC Input (CH2 ­ Solar / PV):

23

Maximising your Solar Harvest using the DC2DC+

24

Understanding the Display & Function Keys during normal operation

25

Understanding The Function Key MENU’,SET’ And `SEL’ During Charger Setting

26

Digital Display:

26

Button Functions:

27

Automatic Override Functions:

28

Programming Your Charger

28

Understanding the Two-Stage (Mode 2) Charging

28

Understanding The Three-Stage (Mode 3) Charging

28

Understanding The Battery Temperature Functions

28

Battery Temperature Compensation:

29

Battery Temperature Sensor (BTS) Voltage Adjustment:

29

Procedure To Set Or View Charger Setting

29

Procedure To Equalise Flooded Batteries

30

Use the following procedure to setup the charger for battery equalisation.

30

Understanding The Protection Features

31

Charging A Flat Battery

31

Understanding The Display Codes

31

8. SPECIFICATIONS

34

9. WARRANTY

35

5 Year Warranty

35

Page 3

Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

1. INTRODUCTION
Thank you for purchasing the Enerdrive DC2DC+ Battery Charger. With our state of the art, easy to use design, this product will o er you reliable service for providing a multistage, multi-input battery charger to charge the di erent types of batteries you have installed in either your home, boat, caravan, 4WD or commercial vehicle. This manual will explain how to use this unit safely and e ectively.

Please Keep This Manual For Future Reference
For safe and optimum performance, the Enerdrive DC2DC+ Battery Charger must be used properly. Carefully read and follow all instructions and guidelines in this manual and give special attention to the CAUTION and WARNING statements.

Disclaimer
While every precaution has been taken to ensure the accuracy of the contents of this guide, Enerdrive assumes no responsibility for errors or omissions. Note the speci cations and product functionality may change without notice.

Important Note
Please be sure to read the entire manual before using your Enerdrive DC2DC+ Battery Charger. Misuse may result in damage to the unit and/or cause harm or serious injury. Read manual in its entirety before using the unit and save manual for future reference.

Product Numbers

DC2DC+ Battery Charger Series

Product Number

Product Description

EN3DC40+

DC2DC+ Battery Charger 12V / 40+Amp

*DC2DC+ Battery Charger Owners Manual Rev. 1.00. This user manual is applicable to DC2DC+ models sold after July 2023 only.

Service Contact Information
Dometic Power & Control (Enerdrive) Pty Ltd
P.O. Box 9159, Wynnum Plaza, Queensland, Australia 4178 Ph: 1300 851 535 / Fax: 07 3390 6911 Email: support@enerdrive.com.au Web: www.enerdrive.com.au

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

Notice of Copyright
Enerdrive DC2DC+ Battery Charger owner’s manual © 2023 Enerdrive. All rights reserved. No part of this document may be reproduced in any form or disclosed to third parties without the express written permission of Dometic Power & Control (Enerdrive) Pty Ltd. Enerdrive reserves the right to revise this document and to periodically make changes to the content hereof without obligation or organization of such revisions or changes, unless required to do so by prior arrangement.
Exclusions For Documentation And Product Usage
Unless speci cally agreed to in writing, Dometic Power & Control (Enerdrive) Pty Ltd; makes no warranty as to the accuracy, suffciency or suitability of any technical or other information provided in its manuals or other documentation.
Assumes no responsibility or liability for losses, damages, costs or expenses, whether special, direct, indirect, consequential or incidental, which might arise out of the use of such information. The use of any such information will be entirely at the user’s risk.
Reminds you that if this manual is in any language other than English although steps have been taken to maintain the accuracy of the translation, the accuracy cannot be guaranteed
Makes no warranty, either expressed or implied, including but not limited to any implied warranties of merchantability or tness for a particular purpose, regarding these Enerdrive products and makes such Enerdrive products available solely on an “as is” basis.
Shall in no event be liable to anyone for special, collateral, incidental, or consequential damages in connection with or arising out of purchase or use of these Enerdrive products. The sole and exclusive liability to Enerdrive, regardless of the form of action, shall not exceed the purchase price of the Enerdrive products described here in.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

2. WARNINGS
Please read and follow the instructions and precautions carefully.
This section contains important safety information for the Enerdrive DC2DC+ Battery Charger. Each time, before using the Enerdrive DC2DC+ Battery Charger. READ ALL instructions and cautionary markings on or provided with the DC2DC+ Battery Charger, and all appropriate sections of this guide.
CAUTION
This unit is intended for indoor use ONLY. It is not suitable for installation in an under bonnet vehicle application and such application will void warranty. Battery Charger contains no user serviceable parts. See Warranty section for how to handle product issues. Do not install the Enerdrive DC2DC+ Battery charger in any vehicle engine bay or con ned area where heat build up may occur. Avoid moisture ingress. Never expose the unit to snow, water, etc..
WARNING: Shock Hazard.
Keep Away From Children!
WARNING: Fire &/or Chemical Burn Hazard!
When charging batteries they can release explosive and corrosive gasses / chemicals. Please wear safety glasses and protective clothing including gloves when working around batteries
LIMITATIONS OF USE
Do not use in connection with life support systems or other medical equipment or devices. The charger is not to be used by persons with reduced physical or mental capabilities or lack of knowledge and experience. Not to be operated or used by children.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

WARNING
Explosion Hazard!
DO NOT use the Enerdrive DC2DC+ Battery Charger in the vicinity of ammable fumes or gases (such as gas bottles). AVOID covering the ventilation openings. Always operate unit in an open and well ventilated area. Prolonged contact to high heat or freezing temperatures will decrease the working life of the unit.
WARNING
Failure To Follow These Instructions May Result In Death Or Serious Injury!
When working with electrical equipment or lead acid batteries, have someone nearby in case of an emergency. Study and follow all the battery manufacturer’s speci c precautions when installing, using and servicing the battery connected to the charger. Wear eye protection and gloves. Avoid touching your eyes while using this unit. Keep fresh water and soap on hand in the event battery acid comes in contact with eyes. If this occurs, cleanse right away with soap and water for a minimum of 15 minutes and seek medical attention. Batteries produce explosive gases. DO NOT smoke or have an open spark or re near the system. Keep unit away from moist or damp areas. Avoid dropping any metal tool or object on the battery. Doing so could create a spark or short circuit which goes through the battery or another electrical tool that may create an explosion.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

3. PRODUCT DESCRIPTION
The Enerdrive DC2DC+ Battery Charger is a multistage, multi-input battery charger to charge di erent types of batteries commonly installed in either boat’s, caravan’s, 4WD’s or commercial vehicle’s.
Enerdrive’s ePOWER DC2DC+ Battery Charger package includes the following items;
1 x DC2DC+ Battery Charger
1 x Battery Temperature Sensor 7.5 Meter Cable)
1 x Owner’s manual

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

4. UNDERSTANDING THE UNIT
The Enerdrive DC2DC+ Battery Charger is a fully automatic multistage, multi input battery charger with the ability to charge from either an alternator linked to a battery; or via solar power with the in built Maximum Power Point Tracking (MPPT) Solar Controller. With two inputs available, the house battery will be charged from either the engine while underway, or via the solar panels when stationary. The process to choose either engine or solar is fully automatic and both functions are controlled from within the unit itself without the need for external relays.
During normal operation the DC2DC+ Battery Charger will do a full charge cycle to float stage on the house battery bank with ability to choose either GEL, AGM, Flooded, Custom Programmable or Lithium. Once oat stage is reached the charger transitions to a power supply mode to support on-board DC loads.
Multistage Charging Process – GEL, AGM, Flooded & Program Modes
The DC2DC+ Battery Charger is a fully automatic, set and forget charger. It is designed to quickly and accurately recharge your deep cycle batteries utilising charger algorithms that help to maximise the life of your specialised deep cycle batteries. The DC2DC+ Battery Charger features multistage smart charging technology that enables the charger to be connected to your battery banks permanently. With the input of multiple sources, you can be assured of charging your batteries whenever underway; or when the sun is shining on your solar array. As dictated by battery manufacturer’s recommendations, deep cycle batteries require a multistage charge sequence for perfect, fast and accurate charging. The Enerdrive DC2DC+ smart charger delivers three primary charge stages. Stage 1 ­ Bulk or Boost charge; The battery is charged up to the full rated output current of the charger until the battery reaches its nal charging voltage, known as its absorption voltage. In this step, around 80% of the battery is recovered as fast as possible. Stage 2 ­ Absorption Charge; With the charger voltage held steady, the remaining 20% is replaced with the charger allowing the current to taper o as the battery approaches full charge. Stage 3 ­ Float; Finally, in the oat stage the charger voltage is lowered and held at a constant and safe predetermined level. This prevents the battery from being overcharged, yet allows the charger to supply enough current to make up for the self-discharge losses of the battery, while supporting additional loads connected to the battery (such as DC lighting and refrigerators). This stage allows for the charger to be used as a DC power supply.
Lithium Charging Process
The DC2DC+ charger has a specic charging profile for Lithium batteries. It has its own charging voltage and current settings that needs to be set by the user. It also requires the user to set the charger termination current (“L” setting). Once the user de ned charge voltage is reached, the charger will start reducing the current output and the charging process will terminate when the charging current drops to the set termination current. This can take anywhere between 3 to 15 minutes. The unit will then act as a power supply to support additional loads connected to the battery while the DC2DC+ is powered from either the vehicle or solar inputs. A Bulk re-start will occur when battery voltage drops below 13.3V DC.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

Smart Charging Feature
The DC2DC+ Battery Charger will regulate its output based on the loads connected to your battery banks. This function is important to maintain the life of your battery banks as some battery chargers mistake loads for discharge and continue to keep the batteries in the bulk or absorption stage for extended periods of time, which will damage the battery bank. The DC2DC+ Battery Charger has two methods of load based regulation to ensure your battery charger transitions to float when it should do so.

Charger Algorithm
Battery Charging Curve For GEL, AGM, Flooded & Program Batteries:

CHARGE CURRENT

V out V abs for 1 min

V out V abs for 1 min

L out < L setting for 1 min

(Battery

If V out < 12.5 Vdc recharge in Bulk

for 15 min

mode)

CC

BULK

ABS

CV ABS

CV ABS timeout 5 hr Total ABS timeout 8 hr
Battery Charging Curve (Current)

FLOAT

BULK

TIME

Battery Charging Curve (Voltage)

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

Lithium Battery Charging Algorithm

Battery Current

Battery Voltage

Bulk

Power Supply Mode Maint. Power Supply Mode

14.4V

14.2V

14.0V

13.8V

13.6V

13.4V

13.2V

13.0V 12.8V

Time out 8 hrs max

Time out 7 days

Diagram does not illustrate our current set points.

Return to Bulk
13.3VDC triggers Bulk Restart

Note: Actual voltages depend on chosen algorithm.

Battery Charger Voltage

Battery Type GEL AGM Flooded
Lithium
Program (Custom Settings)

Absorption 14.4 V 14.6 V 14.4 V
13.9 V-14.6V (0.1V Step) (see Note2)

Float (See Note 3) 13.7 V 13.6 V 13.3 V
13.5V-14.2V (0.1V Step)

13.8V-14.8 (0.1V Step) 13.0V-13.8 (0.1V Step)

Equalisation N.A. N.A.
15.5 V (See Note1) N.A
N.A

• For ConcordeTM branded batteries (lifeline, sun xtender) use ooded setting and consult battery supplier for equalisation recommendations.
  Note 1: Equalisation setting can only be used on ooded battery type selection only. See more details on Procedure to Equalise the Flooded Battery.
  Note 2: Charger will terminate charging when charging current drops to below the set charger termination value.
  Note 3: Charger is acting as a power supply with selected constant output voltage and preset maximum output current.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

NOTE: The equalisation function although included in the DC2DC+ will rarely be used. To activate, the battery bank must be in float, and manually activated. A typical drive will not be long enough for the DC2DC function to complete the process. The MPPT Solar function may provide enough time for Equalisation, but the best recommendation will be an AC powered battery charger.

Battery Bank Size Recommendation
The battery charging current rating is based on the battery size. The battery bank should meet the minimum Ah rating as shown. If a smaller size battery bank is used, set the current rating to a lower value to match with the battery bank size. Normally, the minimum battery bank capacity is based on a C5 rating of the battery for charging.

Current Setting Battery Capacity

5A Min 25Ah

EN3DC40+

10A

20A

30A

40A

50A

Min 50Ah Min 100Ah Min 150Ah Min 200Ah Min 250Ah

EN3DC40+ (Current Settings):

Bulk (“h” Setting)
ABS Float (“L” Setting)
Bulk (“h” Setting)
ABS Float (“L” Setting)

EN3DC40+ Available Current Settings

5A

10A

15A

20A

1A/1.5A/2A 1A/1.5A/2A 1A/1.5A/3A 2A/3A/4A

30A

35A

40A

45A

3A/4A/6A 3A/5A/7A

4A/6A/8A

4A/6A/9A

Use the above table to set the Bulk and its related Absorption (ABS) to Float Charge Current.

25A 2A/4A/5A
50A 5A/7A/10A

IMPORTANT NOTE: If in doubt of the “L” setting, use the highest available current setting for battery protection.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

INSTALLING THE CHARGER 5.
WARNING
Enerdrive recommends that all wiring be done by a skilled technician to ensure adherence to the best practice standards for on-board DC electrical installations. Failure to follow these instructions can damage the unit and could also result in personal injury or loss of life.
CAUTION
Before Installing The Unit Consider The Following:
This unit is designed ONLY for internal mounting and should be used or stored in an indoor area away from direct sunlight, heat, moisture or conductive contaminants. DO NOT INSTALL IN VEHICLE ENGINE BAY This is an electronic device cooled by a fan, and will prematurely fail if installed in corrosive / moisture rich environments. When placing the unit, allow a minimum of 75mm of space around the unit for optimal ventilation.
NOTE
The Enerdrive DC2DC+ Battery Charger is designed to be permanently mounted.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

Mounting The Charger
· Choose an appropriate mounting location. · For installing in an indoor location, the unit should be mounted vertically (with the
battery terminals facing downwards). This provides the best thermal performance and drip protection. The unit should NOT be mounted upside down. · For installing in a boat or marine environment, the unit should only be mounted vertically (Battery Terminals facing downwards only) to provide adequate drip protection. · Use the base of the charger as a mounting template to mark the positions of the xing screws. · Drill the 4 xing holes and place the Charger in position and fasten the unit to the mounting surface.

55mm

119mm

Page 14

160mm Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

6. CONNECTING THE CHARGER
Chassis Grounding Connection
BEST PRACTICE
This Charger SHOULD BE CORRECTLY GROUNDED.
The unit chassis has a stud point on it for grounding. Connect the unit’s chassis ground to the common ground point through the ground stud located near one of the unit mounting slots. (Battery DC negative is the best ground reference point in your installation) .
DC Output Wiring
WARNING: Correct DC Wiring Is Required
The DC wiring used must be of appropriate size. An individual fuse or breaker is required to be installed within 20cm of the both the start battery and house battery bank. A DC isolator or fuse is also recommended for the solar input. All devices must be rated for DC voltage and current. The solar input fuse or breaker must be able to withstand the short circuit current rating stated on the solar panel array. All wiring must conform or exceed the recommendations stated in this manual (page 17). This is a Dual Input device. Di erent cable sizes are required for the alternator input, solar array input and the DC2DC+ charger to battery connection.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

DC2DC+ Battery Charger Connections

Battery Temperature Sensor Port

Unit Ground

IGNITION SENSE BATTERY INPUT BATTERY INPUT SOLAR INPUT SOLAR INPUT BATTERY OUTPUT BATTERY OUTPUT TERMINAL

CH3
Start Battery

CH2
Solar Array

CH1
House Battery

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

Recommended Cable Length, Size and Fuse Protection.

DC2DC Connection Inputs
DC2DC set to =<30A Output
From Alternator Battery
Primary Battery Connection (2)

Require Length & Battery Cable Size

2 Meters to 5 Meters (2)
6-16mm2 @ 12vdc / 4-8mm2 @ 24vdc

Up to 10 Meters (2)
16-35mm2 @ 12vdc / 8-16mm2 @ 24vdc

Greater than 10 Meters
Not Recommended

16mm2

Not Recommended Not Recommended

DC2DC Connection Inputs
DC2DC set to =<40A Output
From Alternator Battery
Primary Battery Connection (2)

Require Length & Battery Cable Size

2 Meters to 5 Meters (2)
10-25mm2 @ 12vdc / 10mm2 @ 24vdc

Up to 10 Meters (2)
25-50mm2 @ 12vdc / 25mm2 @ 24vdc

Greater than 10 Meters
Not Recommended

16-25mm2

Not Recommended Not Recommended

DC2DC Connection Inputs
DC2DC set to 50A Output
From Alternator Battery
Primary Battery Connection (2)

Require Length & Battery Cable Size

2 Meters to 5 Meters (2)
16-25mm2 @ 12vdc / 8-10mm2 @ 24vdc

Up to 10 Meters (2)
35-50mm2 @ 12vdc / 16-25mm2 @ 24vdc

Greater than 10 Meters
Not Recommended

16-25mm2

Not Recommended Not Recommended

Note: Cable size quoted is one way from battery to device, however suggested cable size is calculated with return run. 1) Note: If solar panels are wired in Series (increased voltage), then typically 1 x 4mm2 cable run per series string is suitable. 2) Based on 3% voltage drop.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

From Alternator Battery
From Solar Panels Primary Battery Connection

Recommended Fuse Protection
70amp Fuse or Circuit Breaker no greater than 20cm from source battery.
PLEASE NOTE: Automatic re-settable circuit breakers are NOT recommended.
Fusing recommended no greater than 20cm from input to DC2DC+ Charger. Typically 15amps per solar panel (consult your panel speci cations for further details).
60amp Fuse or Circuit Breaker.

Standard Temperature Sensor Connection
· To install the temperature sensor, simply connect the RJ12 plug from the sensor to the RJ12 Temperature Sensor Port located next to the Remote Port.
· On the temperature sensor end, simply connect the ring terminals to the negative terminal of the main house battery bank.

PLEASE NOTE: For lithium installations, the standard supplied temperature sensor is not required to be installed for these applications.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

Battery Wiring (Towing Applications):
For Towed Applications i.e. Caravans, Camper Trailers
Please NOTE
The negative cable from the start battery must be carried to the DC2DC input terminal for correct operation in a towed application.
(Optional Ignition – On) VSO
(Voltage Sense Override)

Fuse Size 1A

Fuse / Breaker 12V – 70A 24V – 40A

Anderson Plug (Optional) Fuse / Breaker
Please NOTE

Start / Vehicle Battery 12V or 24V

Vehicles with a Smart alternator, the Negative cable must be
connected to the vehicle side of the Battery Sense Module.
Smart alternator battery sense
module.

MPPT Solar Panel Input Max: 500w / 45VOC
(For xed or portable panels)

Temp Sensor Cable (Included)
Fuse / Breaker 60A
12V House Battery Bank
POSITIVE WIRE NEGATIVE WIRE TEMPERATURE SENSOR CABLE (INCLUDED)

This diagram is for a reference only. No cables, fuse/breakers, batteries or solar panels are supplied with this unit. Local rules and regulations should be followed when installing this unit.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

Battery Wiring (Vehicle & Marine Applications):
For In Vehicle & Marine Installation. i.e. Motorhomes, 4WD’s & Trucks.
Please NOTE
Vehicles with a Smart alternator, the Negative cable must be connected to the vehicle side of
the Battery Sense Module.
(Optional Ignition – On) VSO
(Voltage Sense Override)

Fuse Size 1A

Fuse / Breaker 12V – 70A 24V – 40A

Smart alternator battery sense
module.

Fuse / Breaker

Temp Sensor Cable (Included)
Fuse / Breaker 60A

Start / Vehicle Battery 12V or 24V

MPPT Solar Panel Input Max: 45VOC
(For xed or portable panels)

12V House Battery Bank

POSITIVE WIRE

NEGATIVE WIRE

TEMPERATURE SENSOR CABLE (INCLUDED)

This diagram is for a reference only. No cables, fuse/breakers, batteries or solar panels are supplied with this unit. Local rules and regulations should be followed when installing this unit.

Page 20

Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

7. UNIT OPERATION
Understanding The Charging Mechanism
Note 1: The Charger is powered by the battery connected to DC Output (CH1) and also supplied by CH2 or CH3 if available. The display will turn o to save power when Input Channel CH2 and CH3 are out of operating range.
Operating from a Start Battery / Alternator (CH3)

Normal Operation:
Input Voltage Range Normal Start-Up Voltage (Note A) Normal Under Voltage Recovery Voltage (Note A)
Ignition Sense Terminal
Low Start-Up Voltage (using Ignition Sense Terminal or using Manual Over-ride setting) (Note B) Low Under Voltage Recovery Voltage (Note B) De-Rated Voltage (with load) (Note C) Under Voltage Shutdown (with load) Over Voltage Shutdown Over Voltage Recovery Input Battery System Reset Voltage (NoteD) Maximum Input Current – EN3DC40+

Input Battery / Source

12V Input

24V Input

10.5V ­ 16.0V

21.0­ 32.0V

13.2V

26.4V

12.8V

25.6V

Ignition Sense Terminal must see a minimum of 10.5V to trigger low
voltage “Priority Mode”.

12.3V

24.6V

12.0V 11.5V 10.5V 16.0V 15.5V < 7V 50A

24.0V 23.0V 21.0V 32.0V 31.0V < 7V 50A

Note A:
When the battery is charging through CH3 with normal operation (not through Ignition or override setting), the charger will charge for 3 minutes, it will then rest for 5 seconds to verify the Input voltage.
During the 5 seconds rest period, if the measured voltage is >12.8Vdc on a 12V System (>25.6Vdc on a 24V system), the unit will continue the charging cycle through CH3.
If the measured voltage on CH3 is <12.8Vdc (<25.6Vdc on a 24V system), the unit will disconnect from the vehicle source and switch back to charge from CH2 (solar if installed) until the CH3 voltage returns to >13.2Vdc on a 12V System (>26.4V on a 24V system).
Also, during the 3 minutes charging process, if the measured terminal voltage drops below <11.5V for a 12V system, (<23V for a 24V system), the charger will start to derate the output

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

current. This function is used to compensate for the use of long or thin wire between the Input Battery System and the unit input terminals. If the input voltage continues to drop below the <10.5V for a 12V system (<21V for a 24V system), the charging process will terminate and the unit will switch back to charge from CH2 (solar if installed) if installed. It will only switch back to CH3 if the CH3 voltage is >13.2V on a 12V system (>26.4V on a 24V system.
Note B:
When the unit has activated the battery charging process using the ignition sense terminal (Priority Mode) or using the Manual Override through the unit setting, the input voltage speci cation is reduced. It has the same charging process but with a Low Start-Up Voltage set to >12.3Vdc 12V system (>24.6V on a 24V system). This feature is designed to be used for vehicles tted with “Smart Alternators”.
If the measured voltage on CH3 is <12.0 Vdc (<24Vdc on a 24V system), the unit will disconnect from the vehicle source and switch back to charge from CH2 (solar if installed) until the CH3 voltage returns to >12.3Vdc on a 12V System (>24.6V on a 24V system).
The Low Under Voltage Recovery Voltage is set to > 12V (from 12.8V) on a 12V system and > 24V (from 26.4V) on a 24V system. During the 5 second rest period, if the input voltage returns above 12V/24V, it will continue the charging process and if the input voltage does not return to > 12V/24V, it will switch back to charge from the Solar – CH2 (if connected) until the Start – CH3 input has returned to the Low Start-Up voltage of 12.3V on a 12V system and 24.6V on a 24V system.
Note C:
During the 3 minute charging process, if the measured terminal voltage drops below the Under Voltage de-rated limit (11.5V for a 12V system, 23V for a 24V system), the charger will start to de-rate the charger current. This function is used to compensate the use of long or thin cable between the Input Battery and the unit terminals. If the voltage continues to drop to below the Under Voltage Shutdown limit of (10.5V for a 12V system and 21V for a 24V system), the charging process will terminate and the unit will switch back to charge from CH2 (solar if installed). It will only switch back to CH3 if the CH3 voltage returns to 13.2V (12.3v with ignition sense connected) on a 12V system and 26.4V (24.6V with ignition sense connected) on a 24V system.
Note D:
The CH3 DC Input (Battery Input) can accept a 12V or 24V battery with an alternator system. When the unit is rst connected, the unit will measure the input voltage. If the voltage is >17V, it will assume it is connected to a 24V Input Battery/Alternator system. If the voltage detect is < 17V, it will assume it is connected to a 12V Input Battery/Alternator system. Once detected, it will store this into the microprocessor and it will only be erased if the Input battery is disconnected or if the measured Input Voltage drops to < 7Vdc.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

DC Input (CH2 ­ Solar / PV):

PV Input Voltage Range

14.5 – 45V

PV Input Under Voltage Shutdown

< 14.5V

PV Input Under Voltage Recovery

15.0V

PV Input Over Voltage Shutdown

45V

PV Input Over Voltage Recovery

= < 44V

PV Charging Mechanism

MPPT type ( approx. 97% e ciency)

Maximum Input

500W *See Note below and “Maximising your Solar Harvest using the DC2DC+”

*Note: The recommended maximum solar wattage input for the DC2DC+ Charger is 500w. You can however “overdrive” the MPPT controller. Please note that doing this is partially an economic decision. You can install more power than the controller can use and this will contribute to better power availability. Enerdrive suggest a total maximum overdrive of 20% (total 600w). On cloudy (or intermittent sunny) days there will be little or no power shaving and the extra power will serve the battery well with more energy harvest earlier and later in the day.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

Maximising your Solar Harvest using the DC2DC+
The Solar Input on the DC2DC+ unit has a maximum rated INPUT current of 30amps. This means it is optimised for using higher voltage `grid’ type modules for best output performance The maximum achievable output using standard 20Voc solar modules will be approximately 35amps @ 14.4Vdc output.

Panel Array
1 1 2 2 3 3 4 4 5 5

Rated Wattage & Volts
150watt @ 20Voc 200watt @ 43Voc 150watt @ 20Voc 200watt @ 43Voc 150watt @ 20Voc 200watt @ 43Voc 150watt @ 20Voc 200watt @ 43Voc 150watt @ 20Voc 200watt @ 43Voc

Open Circuit rating
150watts 200watts 300watts 400watts 450watts 600watts 600watts 800watts 1000watts 1000watts

Estimated DC Amps Output (## See Below)
10 13 21 27 31 42 35* 47** Not Recommended Not Recommended

• Maximum achievable output on the DC2DC+ unit when using 20Voc Solar Panels will be thaeppapropxriomxaimtealyte3l5yA3m5apms.ps.
  ** Maximum achievable output on the DC2DC+ unit when using 43Voc Solar Panels will be theapapprporxoimximataetlyel4y74A7mampsp.s.

IMPORTANT NOTE: Estimated Amps Output is quoted based upon PERFECT Solar

conditions including Sun Angle, Panel Mounting angle and Orientation to the sun. It needs to be noted that panel performance alters dramatically between Summer and Winter periods and actual performance may be impossible to predict.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

Understanding the Display & Function Keys during normal operation

Digital Display Digital Display Info : CH1
CH2 & CH3 Fault/Warning
CH3′ Icon Flashing CH3′ Icon Solid CH2′ Icon FlashingCH2′ Icon Solid

Display
LCD with back lighting
Charging Status, Voltage, Current Voltage Error code E01-08, Warning A01-02
CH3 > 12.0V on a 12V Input system CH3 > 24.0V on a 24V Input system and not charging from (alternator)
Charging from CH3 input (Start Battery / Alternator)
CH2 > 14.5V and not charging from solar array
Charging from CH2 input (solar)

· During normal operation, the display will cycle through and show CH1 battery voltage, charging current and charging stage (bul’ ­ Bulk stage,Abs’ ­ Absorption stage, Ful ­ Float stage) alternatively. When theMENU’ key is pressed, it will display the other channel’s battery voltage only
· CH3 icon will ash when the input voltage is above (> 12 on a 12V system or > 24V on a 24V system and it is not the source charging the battery. It will change to solid when it becomes the source charging the battery.
· CH2 icon will ash when the input voltage is above the Flashing Voltage (> 14.5V) and is not the source charging the battery. It will change to solid when it becomes the source charging the battery.
· During normal operation, Every time the menu button is pressed once, the display will scroll through and show CH1, CH2 & CH3: Voltage’ for 3 seconds and it will return to the normal display automatically. If CH2 or CH3 is not connected, it will show 0V.
· The display will remain ON when either one or both CH2 & CH3 inputs are available. The display will turn OFF if CH2 or CH3 is not available.
· During equalisation operation (for ooded batteries only), the numerical section on the display will show a ashing `eq’ indicating the equalisation process is in progress and it will not show the battery voltage or the charging current.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

Understanding The Function Key MENU’,SET’ And `SEL’ During Charger Setting

CH1 – display is showing the charging battery info (charging status, voltage and current).
CH2 or CH3 – When displayed symbol is solid this means the power is coming from the related channel and the other channel will be ashing if it is connected but not charging.
“V” – Display is showing the voltage
“A” – display is showing the current
“Auto” – units Silent mode is switched on
“Priority” – the units “ignition Sense” terminal is connected or the unit is set to Manual Override mode
“Mode” – charging mode setting
“Temp” – Temperature setting
*Will only display when selected setting is active

Priority

Digital Display:
· During the charging process, the display shows CH1′ charging status, voltage and current repeatedly, andCH2′ or CH3′ symbol is solid to indicate the active input source. If the other input channel is available and the voltage is above theCH2 and CH3 Flashing Voltage’ the icon will be ashing. When the menu button is pressed once, the display will change to show CH1 Voltage for 3 seconds, CH2 voltage for 3 seconds and CH3 voltage for 3 seconds. The display will then revert back to normal operation and will show the CH1 info.
· When the Battery (CH1) is fully charged, it will show CH1′ andFLO’, voltage and current repeatedly on the display.
· The selected “battery type” icon is always ON at all times during the whole charging process.
· The Priority’ Icon turns ON when the “ignition sense” terminal is connected or the unit is set toManual Override’ mode.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

Button Functions:
· During normal charging operation, press once to change the display to show
· CH1, CH2 and CH3 voltage.
· During normal charging operation, press and hold for more than 3 seconds to enter Charger Function Setting Menu
· When CH2 or CH3 is not available (voltage detect is below the sense voltage), display will turn OFF. Press once will temporary trigger on the display and it will automatically cycle through all three channels voltage, the software revision and then turn o .
· During the charger Setup Menu, this button is used to con rm the setting and continue to the next menu.
· Manual Override Mode: During normal operation, when the input source is charging from CH2, press and hold for more than 10 seconds to turn Priority mode ON, Priority’ icon on display will turn ON. This will force the charger from being connected to CH2 and connect it to CH3 (subject to CH3 being 12.3v or 24.6V or higher). If CH3 is not connected or out of operating range, it will go back to CH2. This setting mode is used when CH2 (Solar) is available but the charging current is too small due to the availability of sunlight. Use the same procedure to turn o theManual Override’ mode when not required.
· Please Note: If Manual Override Mode is used and left on there is a risk of attening the start battery. The preferred method is to use the automatic override method by connecting the ignition source to the ignition terminal of the DC2DC+ charger.
· With Flooded Battery Type setting, press and hold the “SET” and “SEL” buttons together for more than 5 seconds will force the charger into Equalized Mode and it will start equalizing the ooded battery. Please note; the battery has to be set to Flooded’ battery type in-order to have this function activated. · During the charger Setup Menu, this button is used to change to the next available setting. ·Silent’ mode (Fan OFF mode): During normal operation, Press and hold for more than 10 seconds will force the fan to turn OFF. Auto’ icon will turn ON. The charger current will reduce to half of the set current. The unit will go back to normal after 12 hours and theAuto’ icon will turn OFF.
· Note: Every time the “MENU”, “SET” and/or “SEL” buttons are pressed, the back light will illuminate and will automatically turn o after 60 seconds.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

Automatic Override Functions:
When positive power is applied to the “Ignition Sense” terminal (do not connect to ground), it will force the charger to connect to CH3 as long as CH3 is within the voltage range >12.3V or 24.6V on a 24v input.
Programming Your Charger
Press and hold the key for longer than 3 seconds to enter charger setting mode and show function setting. Once new setting is done, press `MENU’ again for longer than 3 seconds to exit the charger setting mode.
Press the key once to keep / save the chosen setting and change the display to show the next menu to continue other settings. Note: The selected setting will quickly ash 3 times to acknowledge the setting.
Press the key to view other available settings.

Understanding the Two-Stage (Mode 2) Charging
(Default setting is 3) The DC2DC+ can be set to act as a 2 stage charger (Bulk/Float). Certain applications may require a 2 stage charge process and by setting this option, the DC2DC+ unit will act accordingly to meet this requirement. During the Bulk stage, the battery accepts the maximum constant current from the charger. In Float stage, the charger continuously produces a lower constant oat voltage to maintain the battery in a fully charged stage.
Understanding The Three-Stage (Mode 3) Charging
The Three-Stage Charging (Mode 3) has a Bulk/Absorption/Float sequence. During the Bulk stage, the battery accepts the maximum constant current from the charger. In the Absorption stage, the battery voltage is held to constant voltage and the charging current will slowly reduce. In Float stage, the charger continuously produces lower constant oat voltage to fully top up and maintain the battery in a fully charged stage.
The charger will automatically restart the full charging cycle if it senses the battery bank is discharged to lower than 12.5V for lead acid batteries and 13.3V for lithium batteries.
Understanding The Battery Temperature Functions
The Battery Temperature Sensor is included with the charger to protect your battery and provide better charging voltage accuracy.
When the battery temperature sensor output is used, it is highly recommended to be installed on the main battery bank at the negative terminal. The sensor senses the battery temperature and overrides the manual temperature settings and makes small adjustments to the charging voltage.
If using lithium batteries, leave temp set to “NOR” (Normal) and leave temp sensor disconnected.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

Battery Temperature Compensation:
There are three manual battery temperature settings on the unit (Lo’,nor’ and `hi’). See the table below for voltage adjustments for temperature compensation.

Temperature Setting

Recommended Battery Temperature

Low (Lo)

< 5°C

Normal (Nor)

5°C and < 30°C

High (HI)

30°C

Battery Type
GEL, Flooded AGM
GEL, Flooded AGM
GEL, Flooded AGM

Voltage adjustment from 25°C normal setting + 0.675 V + 0.525 V 0 V 0 V – 0.27 V – 0.21 V

Battery Temperature Sensor (BTS) Voltage Adjustment:

Battery Temperature
< 25°C 25°C > 25°C

Battery Charging Voltage Adjustment from 25°C

Flooded and GEL type

AGM type

+ 0.027V / °C

+ 0.021V / °C

0V

0V

– 0.027 / °C

– 0.021 / °C

Note: The above voltage compensation will only work with the supplied Battery Temperature Sensor tted which will override the unit temperatures’ (Lo, Nor, Hi) setting. If using lithium batteries, leave temp setting “NOR” (Normal) and leave temp sensor disconnected.
Procedure To Set Or View Charger Setting
Follow the procedure or sequence in Appendix A1 and A2 (see back of this manual) to set or view the charger setting.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

Procedure To Equalise Flooded Batteries
DANGER
Explosion Hazard And Risk Of Battery Damage.
The battery generates explosive gases during equalisation. Follow all the battery safety precautions listed in the manual. When using the equalisation mode, the user has to be sure the battery connected to the battery charger is a ooded battery type. Equalizing a non- ooded battery may overcharge the battery and may cause the battery to explode.
CAUTION
Risk of battery and equipment damage.
Only Flooded lead-acid can be equalised. Consult your battery manufacturer or read the battery manual when you try to equalise your batteries.
Disconnect any DC load connected to the battery, as during equalise mode, the charger will produce 15.5V to the batteries. You must monitor the battery speci c gravity throughout the equalisation process to determine the end of the equalising cycle. Before setting the equalisation mode, please be sure the battery is a ooded battery type. When the battery equalisation has started, the charger will automatically fully charge the battery bank and will then follow with 1 hour of equalisation. Check the battery electrolyte level during the equalisation period. If necessary, re ll with distilled water only. All cells should have similar electrolyte levels. If distilled water is added, batteries must undergo a complete charge cycle. The charger cannot determine when to terminate the equalisation of the battery, a one hour time-out is set and this is used as a safety feature to require the user to continually re- activate it as necessary after checking batteries manually.
Use the following procedure to setup the charger for battery equalisation.
With Flooded Battery Type setting, Press and Hold Button “SET” and “SEL” together for more than 5 seconds. This will force the charger to go into to Equalized mode and it will start equalizing the ooded battery. Please note the battery mode setting has to be set to `Flooded’ battery type in-order to have this function activated.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

Understanding The Protection Features
De-rating Charging Current: When the charger senses the environmental temperature is above 50°C, the maximum charger current will de-rate to 1/2 of the set value (A01 warning code will display). The charger will recover automatically back to maximum charging current when the environmental temperature drops to below 45°C.
Over Temperature Shutdown: When the charger senses the environmental temperature is above 60°C, the charger will shutdown. It will recover automatically when the environmental temperature drops to below 45°C.
Battery Reverse Polarity: When a reverse polarity is connected to the battery bank, “Error Code E08” on the display will appear.
Charging A Flat Battery
The charger is designed to charge batteries with terminal voltage greater than 8.0Vdc.
Re-charging a at battery requires extreme care and attention. It is best to re-charge using short frequent cycles rather than one long bulk cycle. Battery damage or failure may occur if the battery is discharged so deeply.
Understanding The Display Codes
Codes will show on the display when either a function or internal warning / fault, such as high internal temperature or DC out of range is detected and the charger may shut down to protect itself until the fault has cleared. See table description below for more information.

Code

Description
The charger is in Bulk Charging Mode Bulk or Boost charge; The battery is charged at the set rated output current of the charger until the battery reaches its nal charging voltage, known as its absorption voltage. In this step, around 80% of the battery is recovered as fast as possible.
The Charger is in Absorption Charging Mode Absorption Charge; With the charger voltage held steady, the remaining 20% is replaced with the charger allowing the current to taper o as the battery approaches full charge.
The charger is in Float Charging & Power Supply Mode Float; Finally, in the oat stage the charger voltage is lowered and held at a constant and safe predetermined level. This prevents the battery from being overcharged, yet allows the charger to supply enough current to make up for the self-discharge losses of the battery, while supporting additional loads connected to the battery (such as DC lighting and refrigerators). This stage allows for the charger to be used as a DC power supply.
CH3 Input Voltage Check This will display for 5 seconds every 3 minutes while charging from the alternator input (CH3) and is normal operation when the charger is checking the under voltage recovery limit (see page 18 for details).

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

CH3 High Input Voltage Shutdown E01 This means the unit has detected the input from the Start/Alternator has gone above 16.0V on a 12V input or 32.0V on a
24V input. This error will clear once the input has dropped below 15.5V on a 12V input or 31.0V on a 24V input.

CH3 Low Input Voltage Shutdown

This means the unit has detected that the input from the Start/Alternator has gone below 10.5V on a 12V input or

21.0V on a 24V input. This error will clear once the input has risen above 13.2V on a 12V input or 26.4V on a 24V input.

E02

If you have this error: ·Check that the voltage of your Start Battery is above 13.2V on a 12V input or 26.4V on a 24V input.

·Check that you have not left the “Priority” (Override) feature activated (Manual or Auto)

·Check that the battery cable from the Start Battery is correctly sized.

· Check you don’t have a loose terminal or blown fuse.

CH2 High Input Voltage Shutdown This means the unit has detected the input from the solar has gone above 45.0V. This error will clear once the input has dropped below 44.0V. E03 If you have this error: ·Check the speci cation of your panels ­ the Volts Open Circuit (VOC) should not exceed 45VOC ·Make sure the solar panels have not been connected in series as this will increase the VOC voltage of the panel array. Please Note: Maximum solar VOC input must not exceed 45VOC or damage to the unit will occur.

CH2 Low Input Voltage Shutdown

This means the unit has detected the input from the Solar Array cannot sustain voltage above 14.5v.

If you have this error:

E04

·Check that you are not in a low light/non direct sunlight situation i.e. Early morning / late afternoon. ·This may also happen if your solar panels are inside in a shed with a skylight or Hi Bay Lights running or outside under

Flood Lights.

If you nd this is happening with your unit when stored, we recommend tting a DC Breaker to the output of the DC2DC+

and turning it o when the unit is not in use/storage.

CH1 High Input Voltage Shutdown

E05

This means the unit has detected that the Main/House battery has gone above 16.0V. This error will clear once the input has dropped below 15.5V.

This may be due to charging from another source. i.e. Another solar controller or AC battery charger.

Over Temperature Shutdown When the charger senses the environmental temperature above 60°C, the charger will E06 Shut down. It will recover automatically when the environmental temperature drops below 45°C. · Check to make sure the fan is working. · Make sure the unit has good ventilation.

BTS Over Temperature Shutdown

This means the units Battery Temp Sensor has detected that the batteries are too hot and has shut down to not over

charge the batteries.

E07

If this occurs, take care and check the temperature of the batteries. ·If the Batteries are Hot ­you may have a dropped cell or faulty battery. Stop all charging and see your local battery

shop to get your batteries tested.

·If the Batteries/Terminals are still cool or only warm, you may have a bad temp sensor. Unplug the temp sensor and

call Enerdrive.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

CH1 Output Short Circuit This means there is a Short Circuit on the DC output to your Main/House battery. E08 If this is displayed, check the following: ·The output wires are not shorted together. ·The output wires are wired correctly and not reverse polarity.
Over Temperature Warning When the charger’s internal temperature is > 60°C, the unit will shut down to protect itself. The unit will return back to A01 normal charging once the internal temperature is < 58°C · Check to make sure the fan is working. · Make sure the unit has good ventilation.
BTS High Temperature Warning When the battery temperature sensor is > 58°C, the unit will shut down to protect the batteries. The unit will return A02 back to normal charging once the battery temperature sensor is < 56°C. ·Check to make sure the batteries are not hot. ·Make sure the batteries have good ventilation.

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

8. SPECIFICATIONS

Output Voltage Output Current Output Power

Output Rating

12V Nominal (8.0V min) 40A ~ 50A 775W

Charger DC Output (CH1):

Selectable Battery Type

Gel, AGM, Flooded, Lithium, Program

Charger Voltage Range

13.8V ­ 15.5V

Float Voltage Range

13.0V ­ 13.8V

Charger Current (User Selectable)

5/10/15/20/25/30/35/40/45/50A (default 40A)

Equalize Voltage (Flooded Battery)

15.5V

Equalize Charging Current

10% of Bulk Current Setting

Charging Control

2 stage / 3 stage selectable (Default 3 stage)

DC Output Bank

Single

Current draw from CH1 when not operating

= < 50mA

Battery Temperature Setting

Low/ Normal/ High (Battery Temperature Sensor Standard)

E ciency

95%

Input Voltage Maximum Solar Input

INPUT Rating (CH2 – MPPT Solar)
14.5 – 45VOC
23V input, 500W (600W allowable) 37.5V-45V input, 750W (800W allowable)

Input Voltage

INPUT Rating (CH3 – Start/Alternator) 10.5 – 16VDC / 21 – 32VDC

Height x Width x Depth Unit Weight Shipping Weight

Dimensions

Note: Speci cations are subject to change without notice.

242mm x 172mm x 74mm 1.85 Kg 2.17 kg

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

9. WARRANTY
5 Year Warranty
In the unlikely event that a technical issue arises with an Enerdrive product, customers are encouraged to initially contact the Enerdrive Support Team on 1300 851 535 or support@enerdrive.com.au for immediate and efficient expertise and first class product support.
IMPORTANT NOTE: CONSUMER PROTECTIONS
If you have purchased your product in Australia, you should be aware that: This warranty is provided in addition to other rights and remedies held by a consumer at law. Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and for compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
Enerdrive warrants that its Products will be free from defects in materials and workmanship (subject to limits, and in normal conditions, as described in the complete Enerdrive Warranty Policy) for up to 5 years from the date of purchase. For full terms, conditions and claim process, refer to the Enerdrive website: https://enerdrive.com.au/warranty/

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Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

Appendix A1LEAD ACID MODE VERSION: REV. 1.2
Press and hold MENU button for Display will show recent setting. 3 seconds to enter the
Charger Function Menu

Charger con guration is a simple step by step process as shown below.
For Tech Support call Enerdrive on 1300 851 535
NOTE: The current setting below is based on the EN3DC40+ battery charger.

CH1 BATTERY TYPE

Press SEL
Display shows GEL & Bulk to change Voltage as currently set. battery type
Press SET to keep the current setting and toggle to the next menu

Press SEL

Display shows Bulk Current as currently set.

to enter high current menu

Press SET to keep the current setting and toggle to the next menu

Press SEL to change battery type Press SET to keep the current setting and toggle to the next menu
Press SEL to change current Press SET to keep the current setting and toggle to the next menu

Press SEL to change battery type

For Lithium and Program Battery Types refer to Appendix A2

Press SEL to return to battery type

Press SET to keep the current setting and toggle to the next menu

CH1 Battery Type Please choose the type of battery to be charged. Your choices are GEL, AGM, Flooded, Lithium or
Custom Program

Press SEL to return to change current

CH1 Bulk Current “h” setting This setting is used to determine the maximum output current that the charger is capable of. For currents 40A or higher, this is achievable if the input/ output cables are large enough for the given distance
to carry the maximum voltage.
Choose between 5 to 50A (5A increments)

Press SET to keep the current setting and toggle to the next menu

CH1 BULK CURRENT

CH1 ABSORPTION TO FLOAT CURRENT

Press SEL

Display shows Absorption to Float as currently set.

to enter low current menu

Press SET to keep the current setting and toggle to the next menu

Press SEL

Display shows Charge Mode as currently set.

to enter mode menu

Press SET to keep the current setting and toggle to the next menu

Press SEL
to change current Press SET to keep the current setting and toggle to the next menu

CH1 Absorption to Float Current “L” Setting This setting is used to determine when the battery is full. Once the current ow reaches this number or below, the charger deems the battery to be full and will shift the charger to the oat state. If running constants loads i.e. Fridge etc, set the charger to the highest “L” number: Choose between 1 to 10A
(Subject to H setting see page 12)

Press SEL
to change mode
Press SET to keep the current setting and toggle to the next menu

Press SEL
to return to change mode Press SET to keep the current setting and toggle to the next menu

Press SEL to return to change current Press SET to keep the current setting and toggle to the next menu

CH1 CHARGE MODE

CH1 TEMP. SELECT

Press SEL

Shows Temp Mode current setting.

to enter temp menu

Press SET to keep the current setting and return to the top level menu

Press SEL
to change temp
Press SET to keep the current setting and return to the top level menu

Press SEL
to change temp
Press SET to keep the current setting and return to the top level menu

Press SEL
to return to change temp Press SET to keep the current setting and return to the top level menu

• Disregard the Temp Select setting if the Temperature Sensor is NOT connected.

NOTE: At any function setting, pressing the MENU button will exit the function mode.
WARNING: FIRE HAZARD
When choosing the battery type and setting the charging parameter, please consult the battery manufacturer on all the voltage and current settings. Using the wrong setting to charge a battery may overcharge, damage the battery and may cause a re.

Appendix A2 LITHIUM MODE VERSION: REV. 1.2
Continues from Appendix A1 CH1 Battery Type Menu

Charger con guration is a simple step by step process as shown below.
For Tech Support call Enerdrive on 1300 851 535
NOTE: The current setting below is based on the EN3DC40+ battery charger.

Press SEL
to change battery type Press SET to keep the current setting and toggle to the next menu

For Program Battery Types refer to Appendix A3

Press SEL

Press SEL to change voltage

Press SEL

CH1 LITHIUM BULK VOLTAGE

to enter Voltage Menu Press SET to keep the current setting and toggle to the next menu

(13.9V to 14.6V in 0.1V steps) Press SET to keep the current setting and toggle to the next menu

to return to voltage
Press SET to keep the current setting and toggle to the next menu

CH1 LITHIUM FLOAT VOLTAGE

Press SEL

Display shows the Float voltage for Program.

to enter Voltage Menu

Press SEL to change voltage (13.0V to 13.8V in 0.1V steps)

Press SEL to return to change voltage

CH1 LITHIUM CHARGING CURRENT

Press SET to keep the current setting and toggle to the next menu
Press SEL to enter Max Current Menu Press SET to keep the current setting and toggle to the next menu

Press SET to keep the current setting and toggle to the next menu

Press SET to keep the current setting and toggle to the next menu

Press SEL
to change current Press SET to keep the current setting and toggle to the next menu

CH1 Bulk Current “h” setting This setting is used to determine the maximum output current that the charger is capable of. For currents 40A or higher, this is achievable if the input/ output cables are large enough for the given distance
to carry the maximum voltage.
Choose between 5 to 50A (5A increments)

Press SEL to return to change current Press SET to keep the current setting and toggle to the next menu

CH1 LITHIUM BATTERY TERMINATION CURRENT

Press SEL to enter Termination Current Menu Press SET to keep the current setting and toggle to the next menu
Press MENU to exit settings

Press SEL
to change current Press SET to keep the current setting and toggle to the next menu

CH1 Absorption to Float Current “L” Setting This setting is used to determine when the battery is full. Once the current ow reaches this number or below, the charger deems the battery to be full and will shift the charger to the oat state. If running constants loads i.e. Fridge etc, set the charger to the highest “L” number: Choose between 1 to 10A
(Subject to H setting see page 12)

Press SEL to return to change current Press SET to keep the current setting and toggle to the next menu

NOTE: At any function setting, pressing the MENU button will exit the function mode.
WARNING: FIRE HAZARD
When using the Lithium Battery type setting to set the battery charging parameters, please consult the battery manufacturer on all the voltage and current settings. Using the wrong setting to charge battery may overcharge, damage the battery and may cause a re.

Appendix A3 PROGRAM MODE VERSION: REV. 1.2
Continues from Appendix A2 CH1 Battery Type Menu

Press SEL
to change battery type Press SET to keep the current setting and toggle to the next menu

Back to Appendix A1 Battery Type

Charger con guration is a simple step by step process as shown below.
For Tech Support call Enerdrive on 1300 851 535
NOTE: The current setting below is based on the EN3DC40+ battery charger.

CH1 PROGRAM BULK VOLTAGE

Press SEL

Press SEL to change voltage

Press SEL

Display shows Program & Bulk Voltage as currently set.

to enter Voltage Menu

Press SET to keep the current setting and toggle to the next menu

(13.8V to 14.8V in 0.1V steps)

Press SET to keep the current setting and toggle to the next menu

Press SET to keep the current setting and toggle to the next menu

to return to change voltage Press SET to keep the current setting and toggle to the next menu

CH1 PROGRAM FLOAT VOLTAGE

Press SEL

Display shows the Float voltage for Program.

to enter Voltage Menu

Press SET to keep the current setting and toggle to the next menu

Press SEL to change voltage

(13.0V to 13.8V in 0.1V steps)

Press SET to keep the current setting and toggle to the next menu

Press SET to keep the current setting and toggle to the next menu

Press SEL
to return to change voltage Press SET to keep the current setting and toggle to the next menu

Press SEL to return to change current

CH1 PROGRAM BULK CURRENT

CH1 PROGRAM ABSORPTION TO FLOAT
CURRENT

Press SEL

Display shows Bulk Current as to enter Max

currently set.

Current Menu

Press SET to keep the current setting and toggle to the next menu

Press SEL

Display shows Absorption to Float as currently set.

to enter Low Current Menu

Press SET to keep the current setting and toggle to the next menu

Press SEL

Display shows Charge Mode as currently set.

to enter Mode Menu

Press SET to keep the current setting and toggle to the next menu

Press SEL
to change current Press SET to keep the current setting and toggle to the next menu

CH1 Bulk Current “h” setting This setting is used to determine the maximum output current that the charger is capable of. For currents 40A or higher, this is achievable if the input/ output cables are large enough for the given distance
to carry the maximum voltage.
Choose between 5 to 50A (5A increments)

Press SEL to change current

CH1 Absorption to Float Current “L” Setting This setting is used to determine when the battery is full. Once the current ow reaches this number or below, the charger deems the battery to be full and will shift the charger to the oat state. If running constants loads i.e. Fridge etc, set the charger to the highest “L” number: Choose between 1 to 10A
(Subject to H setting see page 12)

Press SET to keep the current setting and toggle to the next menu
Press SEL to return to change current

Press SEL
to change mode
Press SET to keep the current setting and toggle to the next menu

Press SEL
to return to change mode Press SET to keep the current setting and toggle to the next menu

Press SET to keep the current setting and toggle to the next menu

CH1 CHARGE MODE

Press MENU to exit settings
NOTE: At any function setting, pressing the MENU button will exit the function mode.
WARNING: FIRE HAZARD
When using the Program Mode to set the battery charging parameters, please consult the battery manufacturer on all the voltage and current settings. Using the wrong setting to charge battery may overcharge, damage the battery and may cause a re.

Fill in the details below for your reference and convenience.
Serial Number: Date of Purchase: Purchased From:

Page 42

Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

Notes:

Page 43

Enerdrive DC2DC+ Battery Charger Owners Manual (Rev. 1.2)

Dometic Power & Control (Enerdrive) Pty Ltd
PO Box 9159, Wynnum Plaza, Queensland Australia, 4178 Ph: 1300 851 535 / Fax: 07 3390 6911 Email: sales@enerdrive.com.au Web: www.enerdrive.com.au

References

• Enerdrive Independent Power Solutions - ENERDRIVE | DOMETIC

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