DOMETIC MT LI 0085 Lithium Iron Phosphate Battery Instruction Manual

MT LI 0085 Lithium Iron Phosphate Battery
Instruction Manual MT LI 0085, MT LI 0105, MT LI 0120, MT LI 0180, MT LI 0240, MT LI 0300

© 2022 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.

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Please read these instructions carefully and follow all instructions, guidelines, and warnings included in this product manual in order 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 in accordance with the instructions, guidelines, and warnings as set forth in this product manual as well as in accordance with 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

WARNING!
Safety instruction: Indicates a hazardous situation that, if not avoided, could result in death or serious injury.
CAUTION!
Safety instruction: 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

WARNING! Failure to obey these warnings could result in death or serious injury.
Electrocution hazard

• Installation, assembly, and wiring as well as all other work may only be performed by qualified electrical specialists. Inadequate repairs may cause serious hazards.

Fire hazard

• Installation in potentially explosive areas such as rooms with inflammable liquids or gases is not permitted.
•  Do not install or keep the device near flames or other heat sources (heating, direct sunlight, gas ovens etc.).

Health hazard

• Always install and keep the device well out of the reach of children.
  NOTICE! Indicates a situation that, if not avoided, can result in property damage.

• Check that the voltage specification on the type plate corresponds to that of the energy supply.

• Never immerse the device in water.

• Protect the device and cables against heat and moisture.

• Do not expose the device to rain.

Safety precautions when handling lithium batteries

CAUTION! Failure to obey these cautions could result in minor or moderate injury.

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.

Scope of delivery

terminals)
2| Battery terminal cover
1| 6-pin connector
1| 4-pin connector
1| Installation and operating manual

Accessories

(MT01262),
9620000218 (MT01265),
9620000303 (MT01268)
Round pole adaptors| 9620000338 (MT12102)

Target group

The electrical installation and setup of the device must be performed 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.

All other actions are intended also for non-professional users.

Intended use

The device is intended to be used as a storage of electrical power for motorhomes, RVs, camping, and marine applications.
This product is only suitable for the intended purpose and application in accordance with these instructions.
This manual provides information that is necessary for the proper installation and/or operation of the product.
Poor installation and/or improper operating or maintenance will result in unsatisfactory performance and a 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 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 the product appearance and product specifications.

Technical scription

The MT lithium batteries are composed of 4 serial blocks with parallel switched LiFePO4 tubular cells.
The MT lithium batteries are equipped with a battery management system that is built into the battery housing.
The battery management system is a non-power consuming, passive electronic device, that protects the battery against deep discharging, overcharging, and over-temperature and ensures cell balancing of all serial switched blocks during charging.

In safety protection mode, the battery switches off temporarily, as long as the interference persists, and switches back on automatically under normal conditions, respectively when recharging.

Installing the lithium battery

NOTICE! Damage hazard

• The installation may only be carried out by a qualified electrician.
• It must be ensured that no water can enter the lithium battery and that the battery is not soiled.
• A mechanically damaged lithium battery must not be used.
• The battery terminals must not come into contact with electro-conductive objects.
• Never connect the connection cables with reversed polarity. Observe the marking (+) for positive and (-) for negative.
• All cables from, or to the battery must be protected by installing a fuse that is approved for the connected cable cross-section.
• The battery pole connection must be securely tightened and the connection must be made according to the current rating.

NOTICE! Damage hazard

• Lithium batteries of different brands, capacities, sizes,s or types must not be connected with each other.
• Batteries with corroded terminals must never be used.
• The lithium batteries must be installed in a heated environment.

➤Remove the transportation lock before installing the battery (fig.1, page 3).
➤The preferred installation position of the battery is standing, but can also lay down if the terminals are facing up (fig.5, page 4).
➤The lithium battery must be secured against slipping and tipping over. To do this, secure the battery with the aids provided in the vehicle.
➤Always connect the positive cable first, then the negative cable.

• Maximum 4 lithium batteries can be connected in parallel (12 V).
• Maximum 2 lithium batteries can be connected in series (24 V).

NOTICE! Damage hazard
Before connecting batteries together, all batteries need to be fully charged separately. The connection of batteries together in parallel or serial is only allowed if the voltage difference between batteries is less than 50 mV.
The lithium batteries are equipped with two additional connectors one to use internal temperature sensors and another connector for dedicated charge controller options.

• Only one MT device may be connected to each internal sensor.
• If the batteries are connected in parallel, only one temperature sensor from one battery terminal A is to be used.
• If the battery charger is from another manufacturer, leave these connectors empty.

NOTICE!
On delivery, the battery is locked with a transportation lock (fig.1, page 3) and can not be charged with Pin 1 and Pin 3 short-circuited on the 4-pin connector and all DIP- switches are Off (factory default).

Setting up the battery

The DIP switches are located behind the battery setup sticker (fig.4, page 4).

NOTE
The factory default settings for the DIPswitches:

• For a single battery: all switches are off.
• For part of the power unit kit: all switches are on.

Signal input mode

supplied to terminal 1 of 4 pin connector. No signal on terminal 1 for full function on battery.
ON| OFF| Interrupts charging and discharging if no signal is supplied to terminal 1 of 4 pin connector.
12 V signal on terminal 1 for full function on battery.
OFF| ON| Interrupts charging if 12 V signal is supplied to terminal 1 of 4 pin connector, discharge still possible. No signal on terminal 1 for full function on battery.
ON| ON| Interrupts charging if no signal is supplied to terminal 1 of 4 pin connector, discharge still possible. 12 V signal on terminal 1 for full function on battery.

Charging protection

connectors are connected.

Charging the lithium battery

The lithium battery charging may only be carried out using an IUoU charger with temperature-controlled charge current reduction. The absorption charge voltage is 14,4 V,  float voltage is 13,6 V, and only 12,8 V below -20 °C and above 50 °C.
Between 0 °C and -20 °C, the charging current of only 0,05 C needs to be applied.

Recommended chargers from the manufacturer For stationary operation:

• MT PL 1225 – MT PL 1250

• MT 1215 – MT 1260

• All PP and MPP solar chargers with lithium battery characteristic
  For mobile use with temperature monitored chargers from alternator:

• Charge Booster LB 30 -LB 90 with lithium battery characteristic

• Battery Control Booster BCB 25/20 until BCB 60/40 with lithium battery characteristic
  Inverter charger combination:

• ICC 1600 SI-N/60 A and ICC 3000 SI-N/120 A

NOTICE! Damage hazard The lithium battery charging may only be carried out using a charger with lithium battery charging characteristics.
NOTE
It’s strongly recommended to use a battery monitor together with the LiFePO4 battery.

Cleaning and maintenance

The lithium batteries are maintenance-free.
➤Occasionally clean the product with a damp cloth.

Troubleshooting

transportation lock (fig.1, page 3).
Wrong DIP-switch settings.| Set the correct DIP-switch order.
(chapter “on page 7)
Wrong wiring polarity.| Connect the battery properly.
Low battery voltage.| Charge the battery for a minimum of 24h.
Battery overheated.| Wait 30 minutes to cool down the battery and reset itself.
Battery circuit shorted or overloaded.| Plug the transportation lock in, wait 10 seconds and remove the transportation plug.
Disconnect all the cables from the battery, wait 10 seconds and reconnect the cables.
Charge the battery to reset.
Battery recharge is not possible.| Wrong DIP-switch settings.| Set the correct DIP-switch order.
(chapter “on page 7)
The temperature sensor connector is
unplugged.| Connect the temperature sensor connector properly.
Battery temperature below 0 °C| Warm up the battery.
Battery overheated.| Wait 30 minutes to cool down the battery and reset itself.
Battery capacity seems reduced.| Long storage| Charge the battery for a minimum of 24h.
No output voltage at the auxiliary
output.| The battery voltage is below 10 V.| Charge the battery for a minimum of 24h.
Output is overloaded. (max. 150 mA)| Disconnect the cables from the auxiliary output and reduce the load. Wait for a few minutes to cool down the battery and reconnect the cables.

Warranty

The statutory warranty period applies. If the product is defective, please contact your retailer or the manufacturer’s branch in your country (see dometic.com/dealer).
For repair and warranty processing, please include the following documents when you send in the product:

• A copy of the receipt with 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

➤ Place the packaging material in the appropriate recycling waste bins wherever possible.
➤ Consult a local recycling center or specialist dealer for details about how to dispose of the product in accordance with the applicable disposal regulations.
➤ Do not dispose of any batteries with general household waste. Return defective or used batteries to your retailer or dispose of them at collection points.

Technical data

| MT LI 0085| MT LI 0105| MT LI 0120
---|---|---|---
Battery type| Lithium iron phosphate/LiFePO4 with integrated BMS
Operating voltage| 12,8 V
Capacity| 85 Ah (C1 @ 20 °C)| 105 Ah (C1 @ 20 °C)| 120 Ah (C1 @ 20 °C)
Continuous discharge current| 100 A
(200 A < 5 sec.)| 160 A
(300 A < 5 sec.)| 200 A
(400 A < 5 sec.)
Charging current recommended/max.| 20 A/50 A| 25 A/80 A| 30 A/100 A
Charging current (reduced)| 0,05 C
Charging characteristics| IUoU for LiFePO4 batteries
End of charge voltage| 14,4 V (0,3-1 h)
Open circuit voltage| 13,4 V
Deep discharge protection| 10,5 V
Discharge temperature range| -20 °C to 60 °C
Recommended charging temperature range Charging current – Imax| 0 °C to 45°C
Reduced charging current temperature range| Ucon5=12,8 V below -20 °C and above 50 °C
| MT LI 0085| MT LI 0105| MT LI 0120
---|---|---|---
Environment condition, humidity| 10% to 90% RH
Charge temperature range with reduced charging current| 2000 charge/discharge cycles at 100% DOD
3000 charge/discharge cycles at 50% DOD
7000 charge/discharge cycles at 30% DOD
Dimensions (W x H x D) (mm)| 278 x 175 x 190| 353 x 175 x 190| 330 x 172 x 212
Battery terminal type| Round pole| Round pole| M8 hexagonal
headed bolt (tighten-
ing torque 7-8 Nm)
Weight| 10,2 kg| 12,7 kg| 14,8 kg
Inspection/certification:| UN 38.3
| MT LI 0180| MT LI 0240| MT LI 0300
---|---|---|---
Battery type| Lithium iron phosphate/LiFePO4 with integrated BMS
Operating voltage| 12,8 V
Capacity| 180 Ah (C1 @ 20 °C)| 240 Ah (C1 @ 20 °C)| 300 Ah (C1 @ 20 °C)
Continuous discharge current| 200A
(400 A < 5 sec.)| 250A
(550 A < 5 sec.)| 300A
(660 A < 5 sec.)
Charging current recommended/max.| 50 A /150 A| 60 A /200 A| 75 A /250 A
Charging current (reduced)| 0,05 C
Charging characteristics| lUoU for lithium batteries
End of charge voltage| 14,4 V (0,3-1 h)
Open circuit voltage| 13,4 V
Deep discharge protection| < 10,5 V
Discharge temperature range| -20 °C to 60 °C
Recommended charging temperature range Charging current – Irna,| 0 °C to 45°C
Reduced charging current temperature range| -20°C to 0°C Underneath Ucons=12,8 V
Environment condition, humidity| 10% to 90% RH
Charge temperature range with reduced charging current| 2000 charge/discharge cycles at 100% DOD
3000 charge/discharge cycles at 50% DOD
7000 charge/discharge cycles at 30% DOD
Dimensions (W x H x D) (mm)| 330 x 172 x 212| 520 x 220 x 240| 520 x 220 x 270
Battery terminal type| M8 hexagonal
headed bolt (tighten-
ing torque 7-8 Nm)| M8 hexagonal
headed bolt (tighten-
ing torque 7-8 Nm)| M8 hexagonal
headed bolt (tighten-
ing torque 7-8 Nm)
Weight| 14,8 kg| 30,5 kg| 38,6 kg
Certification| UN 38.3

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References

• Outdoor Adventure Starts Here | This Way Out | Dometic USA
• Contact Us | Support for You | Dometic USA
• Find a Dealer | Dometic USA

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