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Lithium-ion for heavy-duty, extreme performance The MLI series delivers extreme Lithium Ion performance that holds up even under the toughest conditions, such as high charge and discharge currents, humid environments, mechanical shocks, or vibrations. This is made possible by combining our best lithium iron phosphate (LiFePO4) cells with our proprietary Battery Management System (BMS) in a rugged, waterproof enclosure. The sophisticated Mastervolt BMS makes optimal use of every individual cell. Integrated battery monitoring provides accurate and up-to-date information on the condition of your battery. Integrated NMEA 2000, CZone, or MasterBus communication enables full system integration, ensuring optimal charging while maximizing the lifespan of your battery. Self-learning balancing algorithm The MLI Ultra batteries are equipped with a self-learning balancing algorithm that predicts the behavior of each individual battery cell and proactively balances them, resulting in a faster and more efficient charging cycle. The self-learning system eliminates unnecessary strain on the cells, resulting in an even longer battery life. Features Extreme performance; lithium-ion batteries are ideally suited for heavy-duty applications. BMS and LiFePO4 chemistry compliant with the highest safety standards. Saves up to 70% in space and weight. Lasts more than three times longer than traditional batteries. Fast charging within 60 minutes. Self-learning balancing algorithm for optimized performance and a longer battery life. High charge and discharge rate up to 2.5 C. Integrated battery monitoring (Ah consumed, charge status). Series connection of up to 10 batteries possible. MasterBus communication with any Mastervolt battery charger. Compatible with CZone and NMEA 2000. Waterproof electronics compartment. Designed in accordance with UN38.3. CE, E-Mark certified. ATTENTION! For added safety, Mastervolt requires the use of a safety relay as a mandatory component of your battery system. 12-volt safety relay, part no. 7700B-BSS