Mastervolt MLI Ultra Lithium Ion Battery – 12/1250

The Mastervolt MLI Ultra 1250 is the most compact battery in Mastervolts range and is ideal for both marine and mobile applications where long lifespan, lightweight, fast charging & compactness are key. This model is 12 V, but 24 V also available.Ideal for applications where long lifespan, lightweight, fast charging & compactness are keyProvides an alternative green energy sourceEquipped with an integrated Battery Management SystemHeavy Duty, Extreme PerformanceThe MLI series deliver 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 Mastervolt’s 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 NMEA2000, CZone and MasterBus communication allows complete system integration, to ensure the best possible charging, while maximizing the lifetime of your battery.Self-learning balancing algorithmThe MLI Ultra batteries are equipped with a self-learning balancing algorithm that predicts the behavior of each individual battery cell and balances proactively, resulting in a faster and more efficient charge cycle. The self-learning system eliminates unnecessary stress on the cells, resulting in an even longer battery cycle life.Freezing cold weather performanceThe MLI Ultra 1250 comes with integrated thermal heat-pad and sophisticated low-temperature control to ensure maximum charging performance at freezing temperatures. In cold weathers it uses the connected charger to power the heat-pad and keep the battery cell temperatures above freezing point. This assures the fastest possible charging and full power capabilities even on the coldest days.Integrated battery switchThe integrated battery safety switch disconnects the battery cells in case of abnormalities. This is based on smart algorithms analyzing all details of the battery condition such as charge current, temperature, cell details and more. Where other integrated switches have current limitations, the MLI Ultra 1250 will keep providing energy up to 200 Amps continuously.Plug-and-play by Auto ConfigurationInstalling a Lithium Ion battery has never been easier. Wire the MLI Ultra 1250 to any supported Mastervolt charger, connect the communication cable and the battery automatically fully configures the charger to match the battery. In this way a smooth and worry-free charging experience is ensured without the need of any configuration toolsFeaturesUltimate performance, Heavy duty Lithium Ion batteriesBMS and LiFePO4 chemistry according to highest safety standardsDrop-in replacement for size Group 31 and Group 49 (85-90 Ah) batteriesMore than three times the life span of traditional batteriesSaves up to 70 % in space and weightHigh charge / discharge rate up to 2 CFast charging within 60 minutesSeries connection up to 48V possibleIntegrated battery switchIntegrated thermal heat-pad with controlIntegrated battery monitoring (Voltage, Current, State of Charge, Time Remaining)MasterBus communication with any Mastervolt Battery Charger or Smart RemoteCZone and NMEA2000 compatibleFully waterproofUN 38.3, CE, E-Mark and FCC certifiedCompliant to UL1973 and RVIA standards, TEI listedGeneral specificationsNominal battery voltage12 VNominal battery capacity100 AhNominal battery energy capacity1250 WhCycle life3500 cycles at 80 % DOD at 25 C, max. C3 charge and C2 dischargeMax. charge current100 ARecommended charge current 50 AMax. continuous discharge current200 AContinuous charge current100 APeak discharge current500 A (10 sec.)Battery monitoringintegratedMasterBus communicationyesCZone / NMEA 2000 communicationyesTerminalsM8Mounting positionupright (recommended) or either long sideDimensionsyesMax. outer dimensions (incl. terminals/grip handles), lxwxh330 x 173 x 210 mm13.0 x 6.8 x 8.3 inchProduct weight15 kg33.1 lbShipping weight17,2 kg37.9 lbComplianceCE, E-Mark, UL1642 (cells only), FCC, RVIA compliantTechnical specificationsBattery chemistryLithium Iron PhosphateProtection degreeIP65Parallel connectionyes, unlimitedSeries connectionyes, up to 48 VProtectionsover voltage, under voltage, over temperatureSafety relayintegratedSafety relay controlsintegratedDownloadUser Manual .input-wrapper a { text-decoration: none; / Removes underline / background-color: transparent; / Ensures no background color / } .input-wrapper a:hover { text-decoration: underline; / Adds underline on hover / background-color: transparent !important; / Remo