Description LiTime’s best-selling drop-in Group 31 lithium battery with Bluetooth 5.0 and a 100A BMS—engineered for 30–70 lb thrust trolling motors.Built for Trolling Motors: High surge capability (120A/10s, 300A/5s, 500A/1s) helps handle sudden load demands for smoother, steadier thrust on the water.Bluetooth 5.0: Track SOC, voltage, current, power, and battery status in real time with the LiTime App—no more range anxiety on the water.Self-developed 100A BMS: 20+ protections with 30s overload auto-recovery, plus pre-charge and enhanced moisture & salt-spray resistance.Low-temp Cut-off Protection: Charging stops at 32°F (0°C) and discharging stops at -4°F (-20°C) for cold-weather safety.EV-grade LiFePO4 Cells: 4000+ cycles@100% DOD and up to 10-year lifespan.IP65 Rated: Waterproof and dustproof design built to withstand marine and outdoor conditions.1280Wh Usable Energy: Reliable power for trolling motors and onboard electronics.Boost Boat Performance: 83% lighter, half the size, with the usable power of two 12V 100Ah lead-acid batteries (1C).Max. 4P4S, to build a 51.2V 400Ah battery system (Max. 20.48kWh).BCI Group 31 Size, L13*W6.77*H8.5 inch. FCC, CE, RoHS, UN38.3 Certified.Recommend LiTime 14.6V 20A charger for battery and Bluetooth activation.Do NOT use it as a Starter Battery.Please do not orient the battery with top or rear side downward. Other orientations are permissible.