The Power Queen 12.8 V 300 Ah LiFePO4 battery, with a capacity of 3840 Wh and a 200 A BMS, is a high-quality power source capable of providing reliable and long-lasting power. Its compact dimensions of 522 x 240 x 218 mm and lightweight design make it ideal for both stationary and portable devices. This battery is ideal for camping, yachts, boats, home solar systems, and other applications requiring a reliable and stable power source. With LiFePO4 technology, it provides high safety and long service life.Cell type LifePO4 Nominal voltage 12.8V Nominal capacity 300Ah Energy 3840Wh Internal resistance 400mH Cycle 4000 times Control board 200A Charging method CC / CV Charging voltage 14.4+-0.2V Recommended charging current 60A (0.2C) Maximum continuous charging current 200A Maximum continuous charging current 200A Pulse charging current 800A Maximum continuous output power 2560W Dimensions L20.55*W9.45*H8.58 inches L522*W240*H218mm Shell material ABS (flame retardant) Protection class IP65 Recommended terminal torque 106.2-123.9 in / lbs / 12-14N-m Temperature Range Charging: 0 degrees to 50 / 32-122F Discharging: -20 to 60 degrees / -4-140F Storage: -10 to 50 degrees / 14-122F This Power Queen 12.8V 300Ah LiFePO4 battery will provide you with a reliable and stable power source in any situation. Reliability, efficiency, and safety make it an ideal choice for a wide range of applications.