Hello, Welcome to Electric Power RC. Here we offer the best of quality with high-capacity batteries for your E-Bike at a great price. All our batteries are compatible with all our wheel kits. Our batteries are true to our specification. High quality built in BMS with short circuit, over-current, over-heat, over-charge, over-discharge protection. Higher current charge port. Charge Temperature: 045°C, Discharge Temperature: -2065°C. Battery Resistance:? 100m? : CC/CV (Constant Current Constant Voltage). Standard Charge Current: 3A. Maximum Charge Current: 3A. Cycle Life:? 800 Cycles with DOD 80%. Short Circuit Safety Test? Overcharge Safety Test? 48V 25AH Grade A Samsung cells. Battery Cell: Grade A Samsung cells. Max Continuous Charge Current: 3A. Max Constant Discharge Current: 40A (BMS). Peak Discharge Current: 100A. Charge Cut-off Voltage: 54.6V. Discharge Cut-off Voltage: 41V42V. Battery Dimensions: 360mm x 96mm x 130 mm. With Charger: 54.6V 3A UK Plug. 1x 3 Amp Fast Charger. 1x AC Power Cable (UK Plug). If in an invent you need to return your order. This item must be in an unused condition with all components and accessories present. Return need to be. Item?? must be in an unused condition with all components and accessories present. Thanks for your time Electric Power RC.