Li-TIME LiFePO4 Battery Pack 25.6V 50Ah 1280Wh Bluetooth 5.0 TVS Protection: Built-in surge protection for high impact resistance. Bluetooth 5.0: Real-time monitoring via Bluetooth 5.0 and the LiTime app. Program Connection: Connect via QR code, support offline management and multi-battery monitoring. Temperature Protection: Charging at 0°C and discharging at -20°C to protect against cold. Intelligent Building Management System (BMS): Protects against overload, short circuit, and other risks. Compact Design: With a capacity of only 9.2 liters, it fits in small spaces. LiFePO4 Cells: UL-tested lithium iron phosphate cells for maximum safety. IP65 Housing: IP65 waterproof and dustproof, ideal for marine environments. Expandable: Up to 4P2S for 48V 200Ah (10.24 kWh).Versatility: Ideal for trolling motors, boats, RVs and off-grid systems.Note: Do not use the battery as a starter. Cycle life 4000 cycles @ 100% DOD, 6000 cycles @ 80%, 15000 cycles @ 60%Nominal voltage 25.6VNominal capacity 50AhEnergy 1280WhMaximum connection (parallel / series) 4000 cycles @ 100% DOD, 6000 cycles @ 80%, 15000 cycles @ 60%Internal resistance ≤40mΩCertifications UL-1973, FCC, CE, RoHS, UN38.3VPU 50AMaximum continuous output power 1280W.Max. continuous charging current 50AMax. continuous discharge current 50AMax. Discharge current 1 second 50A Recharge voltage 28.8V ± 0.4V Recommended charging current 10A (0.2C) Recharge temperature 0℃ ~ 50℃ Discharge temperature -20℃ ~ 60℃ Storage temperature: -10℃ ~ 50℃ Low temperature protection Yes Low temperature protection during charging Yes / 5°C Connection terminals M8 screws Weight 9.6 kg Size 206×168×211 mm Case material ABS Protection class IP65