OPTIMA ORANGETOP™ Lithium Deep Cycle Battery Deep-cycle battery, as used for trolling motors or RV house battery applications. Advanced microprocessor-controlled battery management system (BMS) automatically monitors and controls all functions. BMS-balanced cell state of charge for improved performance and extended life span. Industry-leading communications via NMEA 2000 and Bluetooth app that displays battery status. Supports up to 450A discharge (5 seconds) and 150A continuous. 150Ah, 150% capacity of most GR31 batteries. Automatic cell heating technology enables charging in extreme cold and increases usable temperature range. Battery-to-battery communication maximizes charging, equalization and performance. QUAD terminals for easy installation of accessories. Robust design with industry-leading vibration, dust and water resistance. Integrated protection from alternator "load dump" in the event of BMS disconnect. A lithium charger, or lithium charging algorithm, must be used for charging lithium batteries.