Application: Motor power is between 200W-800W,ebike bicycle ,electric scooter,electric skateboard,power wheelchair. Specification : Rated voltage: 36V Output Voltage: 27.5-42V Combination mode: 10 series 4 parallel Number of batteries: 40 cell Single cell size: 18mm diameter x 65mm height Battery capacity: 12Ah Dimensions: 47*67*370mm (Can customized ) Total weight: 2kg around Internal protection circuit: overload, over discharge, over current, short circuit protection Battery cells inside : Big brand cells . Good quality! Life Cycles :Over 1000 times Applications: electric vehicles, model aircraft, electric tools, Battery pack diy, Golf carts, sightseeing coaches, electric Motorcycles, electric bicycles ,power wheelchairs And Others . Note: If the motor power is more than 800W, please contact us via email, we can customize the matching battery for you, but you need to charge extra!