Nominal voltage: 48V Battery capacity: 14Ah Battery size: 430x76x110mm Output voltage: 36.4-54.6V Combination: 13series 4parallel Number of batteries: 52pcs Single cell size: Diameter 18mm x height 65mm Total weight: 3350g Support motor power: 50W-700W Support charging current: 0.2-5A The battery has a built-in BMS protection board The battery has short circuit protection, overcharge protection, over discharge protection, overload protection, over current protection, and equalized voltage. Internal battery: Big brand battery. high quality! Life cycle: more than 1000 times Application range: Electric bicycles, airplane models, power tools, battery diy, Golf carts, sightseeing buses, electric motorcycles, electric wheelchairs, etc.