48V 2000W 26 Rear Type Hub motor kit. Rated Voltage (DCV) & Rated Power (W) : 48V 2000W. Wheel Diameter (Inch) : 26. Brushless Motor : Gear Drive. Operating Temperature : -20 – 45? Rear Dropout : 135-142mm / OLD. Support Brake : V/Disk Brake. 48V 20Ah Hailong Battery. Rated Capacity: 19.2Ah. Configuration: 13S4P (52 cells). LG 21700 4800mah, 3C. Max Continuous Charge Current: 5A. Max Constant Discharge Current:45A(BMS). Peak Discharge Current: 135A. Charge Cut-off Voltage : 54.6V. Discharge Cut-off Voltage : 36.4V39V. Battery Dimensions :36590110mm (14.373.544.33inch). T: 4.74kg 10.45 lbs. WIth Charger : 54.6V 3A. Configuration: 14S4P (56 cells). Max Constant Discharge Current:40A(BMS). Peak Discharge Current: 120A. Charge Cut-off Voltage : 58.8V. Discharge Cut-off Voltage : 39.2V42V. Battery Dimensions :36590127mm (14.373.545inch). T: 5.35kg 11.8 lbs. WIth Charger : 58.8V 3A. 48V 20Ah Triangle Battery. Configuration: 13S8P (104 cells). Battery Cell: Top A-grade 18650 2500mah. Max Constant Discharge Current:50A(BMS). Peak Discharge Current: 150A. Battery Dimensions : 3642326434385mm (14.339.132.5213.53.35inch). T: 6.3kg 13.89 lbs. 52V 20AH Triangle Battery. Configuration: 14S8P (112 cells). Battery Weight: 6.7kg (14.55 lbs). (Can ask us for pictures if you don’t know how to install). Step 1 : Mount the motor. (1) Remove your bicycle front wheel. (2) Mount your disc brake on the motor. (should be on the left side of the bike), if y. Our bicycle is V brake, please ignore it. (3) Mount the front wheel on the bike. Step 2 : Mount torque arms. Step 3 : Mount LCD Display. Step 4 : Mount Brake Levers. Step 5 : Mount the Pedal Assist Syestem (PAS). Step 6 : Connect cables with all parts. Step 7 : Mount the battery on bike, and connect battery with controller, all things done. (Battery not included in the package).