MLI-E 12/1200

The Mastervolt MLI-E Lithium Ion battery closes the gap between the very compact MLS battery and the successful high capacity MLI Ultra series. The MLI-E is ideal for applications where long lifespan, light weight, fast charging and compactness are key. Its practical form factor makes the MLI-E perfectly suitable for mobile applications.

Compact, maintenance free power, ideal for mobile applications

Lithium Ion has many advantages over lead-acid. The MLI-E saves up to 70 % in space and weight, recharges in less than an hour, and deep cycles 5.000 times easily, which is up to 10 times longer than lead-acid batteries. The MLI-E can replace a 180-200 Ah lead-acid battery. Also, for the MLI-E the extremely safe Lithium Ion (LiFePO4) chemistry is used.

No external safety relay is needed. The MLI-E is protected against overcharging, deep discharging and overheating and comes with an integrated electronic safety switch. With its waterproof plastic case, the MLI-E is a straight-forward replacement for most lead-acid batteries.

LED indicators inform you about the actual status of your battery. Of course, the MLI-E is provided with integrated battery monitoring, including information about state of charge and time remaining. For optimal integration in both mobile and maritime power systems, both NMEA2000 / CZone and CANopen protocols are supported. Needless to say, the MLI-E fits perfectly into a MasterBus system, when combined with our system monitor EasyView 5*. And last but not least: hands-on monitoring is available, using Bluetooth and a mobile app.


  • Very long lifespan, maintenance free.
  • Fast charging and discharging, fully charged within an hour.
  • Straight-forward replacement for most existing lead-acid batteries (EqPb: 200 Ah).
  • Compact, practical size.
  • Extremely safe Lithium Ion chemistry (LiFePO4).
  • Integrated safety switch for quick and easy installation.
  • High performance even under harsh conditions.
  • High efficiency and low self-discharge.
  • Integrated battery monitoring for reliable battery status information.
  • System integration via NMEA2000 / CZone, CANopen or MasterBus (via EasyView 5*).
  • Monitoring via Bluetooth app possible.


Its size, weight, tough waterproof case and resistance to shocks makes the MLI-E ideal for mobile applications. Other applications range from marine, infrastructure, off-grid to industrial applications.

* Max. two MLI-E batteries per EasyView 5. Refer to manual for details.

Product code: 66011200
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Communication & monitoring
Communication LED indicators, CANopen, CZone/NMEA 2000 (through drop cable CZone/MasterBus, product code 77046000), MasterBus (through EasyView 5*, product code 77010310), Bluetooth (via mobile app)
General specifications
Nominal battery voltage 13.2 V
Nominal battery capacity 90 Ah
Nominal battery energy capacity 1200 Wh
Cycle life 3500 cycles at 80 % DOD at 25 ⁰C, max. C3 charge and C2 discharge
Max. charge current 90 A (1 C)
Continuous discharge current 200 A (2.2 C)
Peak discharge current 350 A (3,8 C) for 30 s
Battery monitoring integrated
Battery terminals automotive or M8 hexagon
Mounting position mountable in multiple orientations, suitable for LN5 fastening brackets
Battery standard Group 49, H8
Battery designation IEC 62620: IFpR19/67[60p4s]M/-10+60/90 – IEC 61960: 4IFpR19/67-60
Max. outer dimensions (incl. terminals/grip handles), lxwxh 353 x 175 x 190 mm
13.9 x 6.9 x 7.5 inch
Weight 12.5 kg
27.6 lb
Delivered with 2x automotive battery pole, 2x M8 bolt, hexagon tool, USB stick (with manual)
Technical specifications
Battery chemistry Lithium Iron Phosphate (LiFePO4)
Temperature range (ambient temp.) discharge -20 °C to 60 °C, derating < 0 °C and > 45 °C / charge -10 °C to 45 °C, derating < 0 °C and > 45 °C
32 °F to 32 °F
Protection degree IP51
Parallel connection yes, unlimited
Series connection no
Protections over voltage, under voltage, over-temperature
Safety disconnect automatic, integrated



MLI-E 12/1200

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User manuals

MLI-E 12/1200

Users manual MLI-E 12/1200


3D product drawings

3D-drawing MLI-E 12/1200 (zipped STEP-file)


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Neil Cox, Head of the Boatyard, gives you an extensive look inside the electrical system on every boat participating in the Volvo Ocean Race.

Watch the interviews and learn more about the excellent Mastervolt performance during the 2017/18 edition of the Volvo Ocean Race.


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