Mastervolt Batteries – Lithium Ion MLI

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Mastervolt Batteries – Lithium Ion MLI


The MLI series is designed to be able to enjoy all the best properties of Lithium Ion technology in the harshest conditions (high charge/discharge currents, flooded environment, mechanical shock or vibrations). To do this, the MLI batteries bring two things on top of Lithium-iron phosphate cells: a sturdy, waterproof housing and the best Battery Management System (BMS). The BMS ensures optimal use of each individual cell, even during fast charge and discharge, and has integrated battery monitoring to always have the best information on the state of your battery. Last but not least, it has Masterbus/CAN communication to the Mastervolt battery charger to ensure the best possible recharging and lifetime of the battery.

• Top performance, heavy duty Lithium Ion batteries.
• Ideal for running heavy loads for long periods and short charge times.
• Saves up to 70 % in space and weight.
• Three times the lifespan of traditional batteries.
• High cycle efficiency.
• Fast charging up to half an hour.
• High discharge rate up to 3C.
• Masterbus/CAN communication with every Mastervolt battery charger.
• Integrated Battery Management System (BMS).
• Integrated battery monitoring (Ah consumed, state of charge).
• Series connection up to 10 batteries possible.
• Waterproof electronics cabinet.
• Extremely safe LiFePO4 chemistry.
• Tested and certified according to UN38.3.


For additional safety, Mastervolt stipulates the use of a safety relay as mandatory part of the battery installation. Mastervolt provides 12- and 24-volt models, so you can always opt the correct voltage.
• safety relay 12 volt, product code


MasterVolt Lithium Ion MLI Batteries
MLI Ultra 12/2500 MLI Ultra 12/5000 MLI Ultra 24/5000
Nominal battery voltage 13,2 V 26.4 V
Nominal battery capacity 180 Ah 360 Ah 180 Ah
Nominal battery energy capacity 2500 Wh 5000 Wh
Cycle life ~2000 at 80 % DoD
Max. charge current 500 A (2,8 C) 500 A (1,4 C) 500 A (2,8 C)
Max. continuous discharge current 500 A (2,8 C) 500 A (1,4 C) 500 A (2,8 C)
Peak discharge current 1800 A (10 C) for 10s
Battery monitoring integrated
MasterBus communication yes
Battery terminals M8
Mounting position upright or either long side
Max. outer dimensions (incl. terminals/grip handles), lxwxh 341 x 197 x 355 mm 622 x 197 x 355 mm
Weight 31 kg 58 kg
Battery chemistry Lithium Iron Phosphate
Protection degree IP65 (electronics cabinet)
Parallel connection yes, unlimited
Series connection yes, up to 10 batteries (series balancing up to 2 batteries)
Protections over voltage, under voltage, over temperature
Safety relay to be added mandatorily, Find it here.
Safety relay controls integrated


Product details for Mastervolt Batteries – Lithium Ion MLI
Energig Part Numbers: L03.66025000, L03.66015000, L03.66012500
Manufacturer Part Numbers: 66025000, 66015000, 66012500</td
UPC code: 852968002868, 852968002851, 816882020445</td
HS Customs code: 85076000</td
Country of origin: CN</td
Buy in bulks of: 1</td
Expected delivery time: Typical 2-14 days</td
Express delivery possible: Yes. 1-2 days direct from remote stock (EU)</td
Approx. shipping weight: Depends on variation</td
Length (package):</b Depends on variation</td
Width (package): Depends on variation</td
Height (package): Depends on variation</td

Please find more details on Mastervolt’s Product pages. There will the latest information always be available.
MLI Ultra 24/5000
MLI Ultra 12/5000
MLI Ultra 12/25

You can find the complete Mastervolt product catalog online: Mastervolt Powerbook. In the Powerbook, you can find all Mastervolt bits and pieces and read about how your solution may be configured.

Please do not hesitate to contact Energig for more information about Mastervolt Batteries – Lithium Ion MLI or any other of our Power Products.
Please feel free to use our Power Guides
You can contact Energig from our Contact page

Please note: May be subject to price, inventory changes and obsolete items

Mastervolt is world famous for its high quality and durability.
Whether it's how the chassis is made, the electronics are designed and mounted or the robust way all products can handle shaking, marine environments and temperature fluctuations. Mastervolt never let's you down!

Mastervolt's reputation and many years of experience makes it a well deserved place in the top of the power convert world that they occupy today.

As a preferred supplier to a range of the largest and most quality conscious companies worldwide, Mastervolt occupies a leading position that not many can challenge.

Additional information

Weight N/A
Dimensions N/A
Delivery Time

Typical 2-14 days

Energig Part Number (SKU)

Mastervolt Batteries – Lithium Ion MLI, L03.66025000, L03.66015000, L03.66012500

Manufactor Part Number (MPN)

66025000, 66015000, 66012500

Buy in bulks of


UPC code

852968002868, 852968002851, 816882020445, 852968002868, 852968002851, 816882020445

Country of origin


HS Customs code


Etim Product class

#EDynamic EC011878 Battery