DOMETIC NBC1230DUAL-OE Battery Charger and Buck Boost Converter Instruction Manual

June 17, 2024
Dometic

DOMETIC NBC1230DUAL-OE Battery Charger and Buck-Boost Converter

Copyright

  • © 2023 Dometic Group. The visual appearance of the contents of this manual is protected by copyright and design law.
  • The underlying technical design and the products contained herein may be protected by design, patent, or be patent pending.
  • The trademarks mentioned in this manual belong to Dometic Sweden AB. All rights are reserved.

Important notes

Please read these instructions carefully and follow all instructions, guidelines, and warnings included in this product manual to ensure that you install, use, and maintain the product properly at all times. These instructions MUST stay with this product.
By using the product, you hereby confirm that you have read all instructions, guidelines, and warnings carefully and that you understand and agree to abide by the terms and conditions as set forth herein. You agree to use this product only for the intended purpose and application and under the instructions, guidelines, and warnings as outlined in this product manual as well as by all applicable laws and regulations. A failure to read and follow the instructions and warnings set forth herein may result in an injury to yourself and others, damage to your product, or damage to other property in the vicinity. This product manual, including the instructions, guidelines, and warnings, and related documentation, may be subject to changes and updates. For up-to-date product information, please visit documents.dometic.com.

Explanation of symbols

DANGER!

  • Indicates a hazardous situation that, if not avoided, will result in death or serious injury.

WARNING!

  • Indicates a hazardous situation that, if not avoided, could result in death or serious injury.

CAUTION!

  • Indicates a hazardous situation that, if not avoided, could result in minor or moderate injury.

NOTICE!

  • Indicates a situation that, if not avoided, can result in property damage.
  • Note Supplementary information for operating the product.

Safety instructions

General safety

  • Also, observe the safety instructions and stipulations issued by the vehicle manufacturer and authorized workshops.
  • WARNING! Electrocution hazard
  • Installation and removal of the battery charger may only be carried out by qualified personnel.
  • Do not operate the device if it is visibly damaged.
  • If this device’s power cable is damaged, the power cable must be replaced by the manufacturer, a service agent, or a similarly qualified person to prevent safety hazards.
  • This device may only be repaired by qualified personnel. Improper repairs can lead to considerable hazards.

If you disassemble the device:

  • Detach all connections.
  • Ensure that no voltage is present on any of the inputs and outputs.
  • Do not use the device in wet conditions or submerge it in any liquid. Store the device in a dry place.
  • Only use accessories that are recommended by the manufacturer.
  • Do not modify or adapt any of the components in any way.

Disconnect the device from the power supply:

  • Before each cleaning and maintenance
  • After every use
  • Before changing a fuse
  • Before carrying out electrical welding work or work on the electrical system

WARNING! Health hazard

  • This device can be used by children aged 8 years and above and persons with reduced physical, sensory, or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning the use of the device in a safe way and understand the hazards involved.
  • Electrical devices are not toys. Always keep and use the device out of the reach of very young children.
  • Children must be supervised to ensure that they do not play with the device.
  • Cleaning and user maintenance shall not be done by children without supervision.

NOTICE! Damage hazard

  • Before start-up, check that the voltage specification on the data plate is the same as that of the power supply.
  • Ensure that other objects cannot cause a short circuit at the contacts of the device.
  • Ensure that the negative and positive poles never come into contact.
  • Do not pull the plug out of the socket by the connection cable.
  • Ensure that the connection to the mains complies with the national wiring regulations.
  • Connect the battery charger only to a grounded socket.
Installing the device safely

DANGER! Explosion hazard

  • Never mount the device in areas where there is a risk of gas or dust explosion.

CAUTION! Risk of injury

  • Ensure that the device and the battery is standing firmly. The device and the battery must be set up and fastened in such a way that it cannot tip over or fall.
  • When positioning the device, ensure that all cables are suitably secured to avoid any form of trip hazard.

NOTICE! Damage hazard

  • Do not place the battery charger near heat sources (heaters, direct sunlight, gas ovens, etc.).
  • Set up the device in a dry location where it is protected against splashing water.

Safety when connecting the device electrically

DANGER! Electrocution hazard

  • For installation on boats: If electrical devices are incorrectly installed on boats, corrosion damage might occur. Have the device installed by a specialist (marine electrician).
  • If you are working on electrical systems, ensure that there is somebody close at hand who can help you in emergencies.

WARNING! Electrocution hazard

  • Observe the recommended cable cross-sections.
  • Lay the cables so that they cannot be damaged by the doors or the hood. Crushed cables can lead to serious injury.

NOTICE! Damage hazard

  • Use ductwork or cable ducts if it is necessary to lay cables through metal panels or other panels with sharp edges.
  • Do not lay the 230 V mains cable and the 12 V cable in the same duct.
  • Do not lay the cable so that it is loose or heavily kinked.
  • Fasten the cables securely.
  • Do not pull on the cables.

Operating the device safely

DANGER! Electrocution hazard

  • Do not touch exposed cables with your bare hands. This applies especially when operating the device from the AC mains.
  • To be able to disconnect the device quickly from the AC power supply, the socket must be close to the device and be easily accessible.

WARNING! Electrocution hazard

  • Only use the device in closed, well-ventilated rooms.

CAUTION! Explosion hazard

  • Do not operate the device under the following conditions.
  • In salty, wet, or damp environments
  • In the vicinity of corrosive fumes
  • In the vicinity of combustible materials
  • In areas where there is a danger of explosions

CAUTION! Electrocution hazard

  • Before starting the device, ensure that the power supply line and the plug are dry and the plug is free from rust or dirt.
  • Always disconnect the power supply when working on the device.
  • Observe that parts of the device may still be under voltage even if the fuse has blown.
  • Do not disconnect any cables when the device is still in use.

NOTICE! Damage hazard

  • Ensure that the air inlets and outlets of the device are not covered.
  • Ensure good ventilation.
  • Never pull the plug out of the socket by the connection cable.
  • The device shall not be exposed to rain.

Safety when handling batteries

WARNING! Risk of injury

  • Batteries contain aggressive and caustic acids. Avoid battery fluid coming into contact with your body. If your skin does come into contact with battery fluid, wash that part of your body thoroughly with water. If you sustain any injuries from acids, contact a doctor immediately.
  • When working on batteries, do not wear any metal objects such as watches or rings. Lead acid batteries can cause short circuits which can cause serious injuries.
  • Only use insulated tools.
  • Do not place any metal parts on the battery.
  • Wear goggles and protective clothing when working on batteries. Do not touch your eyes when working on batteries.
  • Do not use defective batteries.

WARNING! Health hazard

  • Keep the battery out of the reach of children.

CAUTION! Electrocution hazard

  • Keep the battery away from water.
  • Avoid short circuits.
  • Avoid clothing rubbing against the battery.
  • Wear antistatic clothing when handling the battery.

CAUTION! Explosion hazard

  • Do not place the battery in an area with flammable liquids or gases.
  • Never attempt to charge a frozen or defective battery. Place the battery in a frost-free area and wait until the battery has acclimatized to the ambient temperature.
  • Then start the charging process.
  • Do not smoke, use an open flame, or cause sparking near the engine or a battery.
  • Keep the battery away from heat sources.

NOTICE! Damage hazard

  • Only use rechargeable batteries.
  • Prevent any metal parts from falling onto the battery.
  • This can cause sparks or short-circuit the battery and other electrical parts.
  • Ensure that the polarity is correct when connecting the battery.
  • Follow the instructions of the battery manufacturer and those of the manufacturer of the system or vehicle in which the battery is used.
  • If the battery has to be removed, first disconnect the ground connection. Disconnect all connections and all consumers from the battery before removing it.
  • Only store fully charged batteries. Recharge stored batteries regularly.
  • Do not carry the battery by its terminals.

Safety when handling lead acid batteries

CAUTION! Health hazard

  • The water-acid liquid inside the battery can evaporate and cause an acidic odor. Use the battery only in a well-ventilated area.

NOTICE! Damage hazard

  • The battery is not sealed. Do not turn the battery on its side or upside down. Place the battery on a horizontal surface.
  • Check the acid level for open lead acid batteries regularly.
  • Immediately recharge deeply discharged lead acid batteries to avoid sulfation.

Safety when handling lithium batteries

CAUTION! Risk of injury

  • Only use batteries with an integrated battery management system and cell balancing.

NOTICE! Damage hazard

  • Only install the battery in environments with an ambient temperature of at least 0 °C.
  • Avoid deep discharge of the batteries.

Scope of delivery

  • Battery charger and buck-booster converter

Accessories

Description Ref. no.
MCA-HS1 Hella battery sensor 9600000101
MCA-HS2 Hella battery sensor 9600026589

Target groups

The electrical power supply must be connected by a qualified electrician who has demonstrated skill and knowledge related to the construction and operation of electrical equipment and installations, and who is familiar with the applicable regulations of the country in which the equipment is to be installed and/or used, and has received safety training to identify and avoid the hazards involved.

Intended use

  • The battery charger is intended for charging a starting and a house 12 V battery with a capacity of 50 … 250 Ah or only 1 of the 2 batteries.

The battery charger is intended for charging the following battery types:

  • Lead acid batteries
  • Lead gel batteries
  • AGM batteries
  • LiFePo4 batteries
  • The battery charger is not intended to charge other battery types (e.g. NiCd, NiMH, etc.) or non-rechargeable batteries.

The battery charger is suitable for:

  • Indoor use
  • Installation in caravans and motor homes
  • Stationary or mobile use

The battery charger is not suitable for:

  • Outdoor use
  • Installation in boats
  • This product is only suitable for the intended purpose and application under these instructions.
  • This manual provides information that is necessary for the proper installation and/or operation of the product.
  • Poor installation and/or improper operation or maintenance will result in unsatisfactory performance and possible failure.

The manufacturer accepts no liability for any injury or damage to the product resulting from:

  • Incorrect assembly or connection, including excess voltage
  • Incorrect maintenance or use of spare parts other than the original spare parts provided by the manufacturer
  • Alterations to the product without express permission from the manufacturer
  • Use for purposes other than those described in this manual
  • Dometic reserves the right to change product appearance and product specifications.

Technical description

  • The battery charger can charge batteries that are used on board vehicles to generate power or supply the batteries with a retention voltage so that they do not discharge.
  • The battery charger is automatically charging the batteries and maintains them with float voltage after the charging has finished.
  • The battery charger can be connected to the batteries for a longer time without damaging them.
  • The battery charger can be supplied for charging from an external AC power source or a DC power source from the alternator inside the vehicle. When charging from an AC source the battery charger can charge 2 batteries independently of each other.
  • When charging from a DC power source, the charging voltage is independent of alternator voltage variations due to a built-in buck-boost regulator.
  • The vehicle start can be supported with the built-in buck-boost function during the start cycle or the possibility to charge the starting battery for a limited time via the house battery.
  • The built-in buck-boost function allows the house battery to be charged while driving.

The charging process can be controlled via:

  • A remote control
  • A monitoring and controlling device
  • The vehicle CI bus
  • An intelligent battery sensor (IBS)

The battery charger can operate in 3 different modes:

Mode Description
Slave mode The battery charger is not connected to an IBS. The charging

of the battery is controlled by the CI bus of the vehicle, a remote control, or a monitoring and controlling device. The charging voltage and currents are set by the device controlling the battery charger. If the battery charger is connected to an AC source and 2 batteries, a maximum current of 25 A per battery can be set. The starting battery is automatically prioritized by the battery charger for charging when 2 batteries are connected. If only 1 battery is connected to the battery charger, the connected battery is supplied with a maximum current of 25 A. If the battery charger is connected to a DC source, the maximum current is 30 A.
Master mode| The charging of the house battery depends on the IBS signals. The charging of the other battery is controlled by the charger itself or with the vehicle’s CI bus, remote control, or monitoring and controlling device. If the battery charger is connected to an AC source, the starting battery is supplied with a maximum of 10 A charging current, and the house battery is supplied with a maximum of 25 A. If both batteries are charged, the total maximum charge current is 25 A. The starting battery is automatically prioritized by the battery charger for charging when 2 batteries are connected. If the battery charger is controlled by the vehicle’s CI bus and is connected to an AC source, the starting battery, and the house battery, the maximum charge current supplied is 25 A. When one battery charges the other battery, the maximum charge current is 30 A.
Normal mode| The battery charger is neither connected to an IBS, the CI bus of the vehicle, a remote control, or a monitoring and controlling device. If the battery charger is connected to an AC source, the starting battery is supplied with a maximum of 10 A charging current, and the house battery is supplied with a maximum of 25 A. If both batteries are charged, the total maximum charge current is 25 A. The starting battery is automatically prioritized by the battery charger for charging when 2 batteries are connected. When one battery charges the other battery, the maximum charge current is 30 A.

  • If the communication between the remote control or a monitoring and controlling device and the battery chargers is interrupted, the battery charger switches to float charge.
  • After 8 h float charging, the battery charger automatically switches to the master or normal mode. If the battery charger communication is activated again, the battery charger switches to slave mode after 10 seconds.
  • The battery charger uses the last configuration saved for the battery.
  • If the batteries are fully charged, the 25 A supplied by the battery charger can be used to supply power to the vehicle interior.
  • The battery charger is equipped with an AC interlock socket. When the battery charger is connected to an AC source, an internal relay of the battery charger short-circuits the AC interlock socket, which connects the battery charger to the vehicle’s starting circuit to prevent the vehicle from starting.
  • The battery charger is equipped with a jump starter button that allows charging of the starting battery using the house battery.

The battery charger has the following protective systems:

  • Overvoltage protection
  • Overheating protection
  • Overload protection
  • Short circuit protection
  • Output polarity protection

Connections and controls

Fig. 1 onDOMETIC-NBC1230DUAL-OE-Battery-Charger-and-Buck-Boost-
Converter-FIG-1

No. Component
1 Local interconnected network (LIN) bus socket
2 D+ socket
3 Starting battery socket
4 230 V input socket
5 Starting battery LED indicator
6 AC interlock socket
7 Jump starter button and house battery type selector button
8 House battery LED indicator
9 LIN bus and temperature sensor socket
10 House battery socket

LIN bus socket Fig.2 onDOMETIC-NBC1230DUAL-OE-Battery-Charger-and-
Buck-Boost-Converter-FIG-2

No. Component
1 Jump starter button (external)
2 Not connected
3 Not connected
4 Not connected
5 LIN bus communication
No. Component
--- ---
6 D+ signal

LIN bus and temperature sensor socket Fig.

No. Component
1 Not connected
2 Not connected
3 Temperature sensor
4 Temperature sensor (common ground point of the batteries)
5 LIN bus communication
6 Not connected

Battery charging function

Lead acid, AGM, and GEL batteries Fig. 4DOMETIC-NBC1230DUAL-OE-
Battery-Charger-and-Buck-Boost-Converter-FIG-3

  1. Analysis phase
    • The battery is deeply discharged (<10 %). The battery charge is analyzed with increasing charging current.
    • The corresponding LED indicator of the battery that is charged flashes fast yellow.
  2. I phase (Constant current phase)
    • At the beginning of the charging process, the empty battery is constantly charged with the maximum charging current (100 %). The charging current decreases when the battery has reached a state of charge of 75 %.
    • Batteries with low voltage are charged with reduced current until the battery voltage exceeds 9 V. The duration of the I phase depends on the state of the battery, the connected load, and the state of charge.
    • For safety reasons, the I phase is terminated after a maximum of 26 hours (in case of battery cell defects or similar).
    • The corresponding LED blinks yellow.
  3. U0 phase (Constant voltage phase)
    • The U0 phase starts when the battery reaches 15 V. The charging current is reduced. During the U0 phase, the battery voltage is kept constant at a high level.
    • The duration of the U1 phase depends on the battery type and the depth of discharge.
    • The corresponding LED flashes slow yellow.
  4. U1 phase (Trickle charging)
    • The U1 phase serves to maintain the battery capacity (100 %). The U1 phase runs at lowered charging voltage and variable current. If DC loads are connected, they are powered by the device. Only if the power required exceeds the capacity of the battery, surplus power is provided by the battery. The battery is then discharged until the device re-enters the I phase and charges the battery.
    • The corresponding LED flashes slow green.
  5. U phase (Float)
    • In long-term mains operation, the U phase prevents the further discharge of the battery (e.g., during long breaks in use, seasonal operation, or during winter storage), minimizes battery gassing, and prevents plate corrosion.
    • The corresponding LED is lit green.
  6. Reconditioning
    • Every 12 days, the charger switches back to the U0 phase for a short time (max. 85 min) to recondition the battery. This prevents any fatigue phenomena such as sulfation or electrolyte stratification.
    • The corresponding LED flashes fast green.

LiFePo4 batteries Fig. 5DOMETIC-NBC1230DUAL-OE-Battery-Charger-and-
Buck-Boost-Converter-FIG-4

  1. I phase (Constant current phase)
    • At the beginning of the charging process, the battery is charged with a constant current (100 % charge current) until the battery voltage reaches 14 V.
    • The charging current decreases when the battery has reached this charging level. For safety reasons, the I phase is terminated after a maximum of 18 h (in case of battery cell defects or similar)
    • The corresponding LED indicator of the battery that is charged flashes yellow.
  2. U0 phase (Trickle charging)
    • Now the trickle charging process (U0 phase) begins, where the duration depends on the battery. The voltage remains constant (U0). Then the main charging phase begins when the battery is fully charged.
    • Once the battery is completely charged, or the charging current is below 6 % of the rated charging current for 15 min, the U0 phase has finished.
    • The corresponding LED flashes yellow.
  3. U phase (Float)
    • After the U0 phase, the battery charger switches to the conservation charging function (U phase). If DC loads are connected, they are powered by the device.
    • Only if the power required exceeds the capacity of the device, this surplus power is provided by the battery. The corresponding LED is lit green.
  4. U phase (Float)
    • The battery is then discharged until the device re-enters the I phase and charges the battery.
    • The corresponding LED is lit green.
  5. I phase (Constant current phase)
    • See 1 : I phase (Constant current phase).
  6. U0 phase (Discharging)
    • See 2: U0 phase (Trickle charging).
  7. U phase (Float)
    • See 3 : U phase (Float).
  8. Reconditioning
    • Every 12 days, the charger switches back to the U phase for a short time (max. 85 min) to recondition the battery (see 3: U phase (Float)).
    • This prevents any fatigue phenomena such as electrolyte stratification.

Installation

Installation location

When selecting an installation location, consider the following:

  • The battery charger and the batteries should not be installed in the same area.
  • The battery charger should not be installed above the batteries as they may emit corrosive sulfur vapors that can damage the battery charger.
  • The mounting surface must be even and sufficiently firm.
  • The device must be installed in a location that is protected from moisture and dust.
  • There should be a space of at least 25 cm above and below the battery charger and 5 cm to the left and right sides.

Fig. 6DOMETIC-NBC1230DUAL-OE-Battery-Charger-and-Buck-Boost-Converter-
FIG-5

Mounting the battery charger

CAUTION! Risk of overheating

  • Ensure that the air inlets are not covered.

NOTICE! Damage hazard

  • Ensure that no electrical cables or other parts of the vehicle can be damaged by drilling.
  1. Place the battery charger at the installation location.
  2. Mark the fastening points.
  3. Mount the battery charger vertically on a wall with one of the following options: M4 or M5 screws with washers and locknuts
  • Self-tapping screws
  • Wood screws

Fig. 7DOMETIC-NBC1230DUAL-OE-Battery-Charger-and-Buck-Boost-Converter-
FIG-6

Connecting the battery charger

NOTICE! Damage hazard

  • Ensure the battery terminals are clean (see Cleaning and maintenance).
  • Use cables with a cable cross-section suitable for 30 A.
  • Do not connect the negative terminal of the battery to the ground (chassis) of the vehicle.
  • Connect the charger directly to the positive and negative terminals of the batteries.
  • Do not reverse the polarity.

Fig.8DOMETIC-NBC1230DUAL-OE-Battery-Charger-and-Buck-Boost-Converter-
FIG-7

No. or symbol Component
1 Battery charger
2 Relay (optional)
3 Vehicle ignition (optional)
4 Remote control or monitoring and controlling device (optional)
5 IBS (optional)
Starting battery
**** House battery
  1. Switch the electric devices that are connected to the batteries.
  2. If no LiFePo4 battery is used, connect an IBS (Fig. 8 5) to a temperature sensor socket (LIN bus and temperature sensor socket, 3 and 4) and the house battery (see Connections and controls).
    • Note Follow the manufacturer’s instructions.
  3. If desired, connect a remote control, a monitoring and controlling device, or the CI bus of the vehicle (Fig. 8 ) to a LIN bus socket (see Connections and controls).
    • Note
    • Follow the manufacturer’s instructions.
    • Ensure that the CI bus supports the setting of battery charging.
  4. If desired, connect a relay (Fig. 8, 2) to the AC interlock socket (Fig. 1 ).
    • Note Follow the manufacturer’s instructions.
  5. Connect the positive cable from the battery charger to the positive terminal of the battery.
  6. Connect the negative cable from the battery charger to the negative terminal of the battery.
  7.  Connect the battery charger to the D+ connection and the power supply.

Disconnecting the batteries

Follow the installation procedure in reverse order.

Operation

Selecting the house battery type

  • Before selecting the house battery type ensure the following.
  • No batteries are connected to the battery charger.
  • The battery charger is connected to an AC power source.
  • Press the jump starter and house battery type selector button (Fig. 1).
  • The LED indicator flashes green and red.
  • Each press selects the next battery type and the output LED indicator signals the chosen type with the number of green flashes followed by one red flash:
Number of flashes Description
1 The lead acid battery type has been selected.
2 The AGM/lead gel battery type has been selected.
3 The LiFePo4 battery type has been selected.
4 The power supply has been selected.

Using the battery charger

  • The battery charger automatically charges the batteries when it is connected to an AC source or an alternator.

Charging the starting battery using the house battery

  • Note The jump start function can only be activated when the battery charger is not connected to an AC source, no D+ signal is present and the house battery voltage is more than 11.8 V.
  • Press the jump starter and house battery type selector button (Fig. 1, 7) for at least 2 s to start charging. The starting battery is charged for 10 min from the house battery.
  • Note After 10 min, the process can be repeated by pressing the jump starter and house battery type selector button (Fig. 1, 7) again.

Cleaning and maintenance

WARNING! Electrocution hazard

  • Disconnect the batteries before cleaning and maintenance.

NOTICE! Damage hazard

  • Never clean the device under running water or in dishwater.
  • Do not use sharp or hard objects, abrasive cleaning agents, or bleach during cleaning as these can damage the device.
  • Occasionally clean the device with a soft, damp cloth.
  • Regularly check live cables or lines for insulation faults, breaks, or loose connections. Regularly clean the vents.

Troubleshooting

Problem Possible cause Suggested remedy
The battery charger does not work. Insulation faults, breaks, or loose
connections at the live cables. Check the live cables for insulation faults,

breaks, or loose connections. If no error can be found, contact an authorized service agent.
A short circuit has been generated.| The battery charger fuse must be replaced. Contact an authorized service agent.
The battery charger stops the charging process.| The battery is defective.| Replace the battery.
The full charge current is not reached.| The battery terminals are not connected- ed correctly.| Check the connections.

Ensure the cable cross-section is suitable for 30 A.

Check the voltages. Measure directly at the terminals/their screws for this purpose.

The charging process is slow.| The battery is significantly sulfated.| Replace the battery.
The battery is no longer charging.| The battery is defective.| Replace the battery.
The vehicle does not start.| The battery charger is connected to the mains. The connected relay prevents the vehicle from starting.| Disconnect the battery charger from the mains.
The LiFePo4 battery does not charge.| The supplied voltage is too low. The battery charger indicates the low voltage as not safe.| Restart the charging process (see Charging the starting battery using the house battery).
The starting battery does not charge.| No AC source is available.| 1. Ensure that the AC connection is connected correctly.

2.       Ensure that voltage is present.

3.       Charge the starting battery us- ing the house battery voltage by pressing the jump starter button for at least 2 s.

Error codes

Problem Possible cause Suggested remedy

The output LED indicator lights up red. The battery charger switches off automatically.| The battery charger has detected a short circuit of a connected device on the output side.| Replace the short-circuited de-vice.

LiFePO4 batteries only : If the battery charger is connected to an AC source, reset the AC connection.

Reconnect the D+ connection.

The AC input is unstable.| Reconnect the AC input.

If necessary, disconnect the AC source and connect the battery charger to a DC source.

The input LED indicator lights up red. The battery charger switches off auto- matically.| The battery charger has detected a short circuit of a connected device on the input side.| Replace the short-circuited de-vice.
The input fuse has blown.| Reset the connected device.
The input LED indicator flashes red quickly. The battery charger switches off automatically.| The battery connected to the IBS is overheated (>52 °C).| Let the corresponding battery cool down below 45 °C. Refer to the manufacturer instructions.
Lead Acid, AGM, and GEL batteries only : The battery connected to the IBS is underheated (<-18 °C).| Move the corresponding battery to a warmer place. Ensure that the corresponding battery has a temperature above -10 °C. Refer to the manufacturer instructions.
LiFePO4 batteries only : The battery connected to the IBS is underheated (<-20 °C).| Move the corresponding battery to a warmer place. Ensure that the corresponding battery has a temperature above -15 °C. Refer to the manufacturer’s instructions.
The battery charger is overheated (>90 °C).| Let the battery charger cool down below 50 °C.
One of the LED indicators flashes slowly red. The battery charger switches off automatically.| The battery voltage of the correspond- ing battery that is charged is too high.| If the battery charger is connected- ed to an AC source, reset the AC connection. If the battery charger is connected- ed to a DC source, ensure that the battery voltage is below 15.7 V.
The corresponding battery does not reach the charging current and therefore not the charging phases U and U0.| If the battery charger is connected- ed to an AC source, reset the AC connection and Reconnect the D+ connection.
Problem| Possible cause| Suggested remedy
---|---|---
One of the LED indicators flashes slowly red. The battery charger charges the connected battery.| The battery voltage of the battery connected to the side where the LED indicator is flashing is too low or the output voltage is too low (<6 V).| Ensure that the corresponding battery and output voltage is above 6.3 V.

Warranty

  • The statutory warranty period applies. If the product is defective, please contact the manufacturer’s branch in your country (see dometic.com/dealer) or your retailer.
  • For repair and warranty processing, please include the following documents when you send in the device:
  • A copy of the receipt with the purchasing date
  • A reason for the claim or description of the fault
  • Note that self-repair or nonprofessional repair can have safety consequences and might void the warranty.

Disposal

  • Recycling products with non-replaceable batteries, rechargeable batteries, or light sources:
  • If the product contains any non-replaceable batteries, rechargeable batteries, or light sources, you don’t have to remove them before disposal.
  • If you wish to finally dispose of the product, ask your local recycling center or specialist dealer for details about how to do this under the applicable disposal regulations.
  • The product can be disposed of free of charge.

Technical data

General technical data

  NBC1230DUAL- OE
Protection class IP20
Air humidity 5 … 95 %
Ambient temperature – 20 … 50 °C
Storage temperature – 40 … 90 °C
230 V input connection IEC 60320-1 / C16
Dimensions   **Fig. 9 on![DOMETIC-NBC1230DUAL-OE-Battery-Charger-and-Buck-

Boost-Converter-FIG-8](https://manuals.plus/wp-content/uploads/2024/02 /DOMETIC-NBC1230DUAL-OE-Battery-Charger-and-Buck-Boost-Converter-FIG-8.png)
Certifications| **

AC input data

Minium input voltage 198 V
Maximum input voltage 264 V
Frequency 50 … 60 Hz (± 5 %)
Starting current at cold start 54 A at 230 V
Efficiency ≤ 92 %
Power factor correction 0.9 – 1.0
Leakage current < 1 mA at 240 V
Insulation class Class I
Input standby power ≤ 10 W

DC input data

Minimum input voltage 10 V
Maximum input voltage 16 V
Engine running input 0 … 16 V

DC output data

Charging voltage 13.2 … 15.7 V
Charging current 25 … 30 A
Rated power 300 W

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