Crafted MLI Ultra 12/1250-1.25 kWh Battery

The Mastervolt MLI Ultra 12/1250 is a heavy-duty LiFePO4 battery with an advanced BMS, waterproof housing, and full system integration (NMEA2000, CZone, MasterBus) to deliver extreme performance and long life under the harshest conditions.

• Nominal battery voltage 12 V

• Nominal battery capacity 100 Ah

• Nominal battery energy capacity 1250

• Cycle life 3500 cycles at 80 % DOD at 25 °C, max. C/3 charge and C/2 discharge

• Max. charge current 100 A

• Recommended charge current <= 50 A

• Max. continuous discharge current 200 A

• Maximum continuous charge current 100 A

• Peak discharge current 500 A (10 sec.)

• Battery monitoring integrated

• MasterBus communication yes

• CZone / NMEA 2000 communication yes

• Terminals M8

• Mounting position upright (recommended) or either long side

• Dimensions yes

• Max. outer dimensions (incl. terminals/grip handles), lxwxh 330 x 173 x 210 mm

• 13.0 x 6.8 x 8.3 inch

• Product weight 15 kg

• 33.1 lb

• Shipping weight 17.2 kg

• 37.9 lb

• Compliance CE, E-Mark, UL1642 (cells only), FCC, RVIA compliant

• Technical specifications

• Battery chemistry Lithium Iron Phosphate

• Protection degree IP65

• Parallel connection yes, unlimited

• Series connection yes, up to 48 V

• Protections over voltage, under voltage, over temperature

• Safety relay integrated

• Safety relay controls integrated