Battery Model,B-LFP48-60GC Nominal Voltage,51.2v (Display voltage: 52.8V) Nominal Capacity,67Ah Usable Energy,3.430kWh Maximum Continuous Charging Current,50A Maximum Continuous Discharging Current,80A Battery System Weight,32KG Protection Rating,IP54 Cycle Life,Over 3500 times Dimension(WxDxH),436*325*215(MM) Warranty,12 Years