Follow us
just fair pricing / more info
on orders over £200* / more info
see what other customers say / more info
MLI Ultra Lithium Battery 12/2750 – 2,75kWh
MLI Ultra Lithium Battery 12/2750 – 2,75kWhMLI Ultra Lithium Battery 12/2750 – 2,75kWhMLI Ultra Lithium Battery 12/2750 – 2,75kWh

MLI Ultra Lithium Battery 12/2750 – 2,75kWh

£3,163.99 Save £381.97 (RRP £3,545.96)  

Part Number:  66012750
Brand:  Mastervolt


Standard UK Delivery for this Product is 5-10 days.

MLI Ultra 12/2750


Heavy Duty, Extreme Performance

The MLI series delivers extreme Lithium Ion performance even under the harshest conditions, such as high charge and discharge currents, wet environments, mechanical shocks or vibrations. This is realized by combining our best Lithium-Iron Phosphate (LiFePO4) cells with a proprietary Battery Management System (BMS) inside a sturdy, waterproof housing. 

The sophisticated Mastervolt BMS ensures optimal use of each individual cell. Integrated battery monitoring provides you with accurate and up-to-date information on the state of your battery. Integrated NMEA 2000, CZone* or MasterBus communication allows complete system integration, to ensure the best possible recharging, while maximizing the lifetime of your battery.


  • Extreme performance, heavy duty Lithium Ion batteries.
  • BMS and LiFePO4 chemistry according to highest safety standards.
  • Saves up to 70 % in space and weight.
  • More than three times the life span of traditional batteries.
  • Fast charging within 60 minutes.
  • High charge / discharge rate up to 2.5 C.
  • Integrated battery monitoring (Ah consumed, state of charge).
  • Series connection up to 10 batteries possible.
  • MasterBus communication with any Mastervolt battery charger.
  • CZone and NMEA 2000 compatible (expected January 2020).
  • Waterproof electronics compartment.
  • Designed according to UN38.3.
  • CE, E-Mark and DNV-GL (pending).

For additional safety, Mastervolt stipulates the use of a safety relay as mandatory part of the battery installation. 

  • safety relay 12 volt, product code 7700B-BSS
  • safety relay 24 volt, product code 7702B-BSS



General specifications
Nominal battery voltage13.2 or 26.4 V
Nominal battery capacity200 or 400 Ah
Nominal battery energy capacity2750 or 5500 Wh
Cycle life3500 cycles at 80 % DOD at 25 C, max. C3 charge and C2 discharge
Max. charge current500 A (2,.5 C)
Continuous charge current200 A (1 C)
Continuous discharge current500 A (2.5 C)
Peak discharge current2000 A (10 C) for 10 s
Battery monitoringintegrated
MasterBus communicationyes
CZone / NMEA 2000 communication

Please see our COVID-19 response here

Due to Brexit and Covid, supplier and couriers services are affected. Please contact us if you require items urgently.