Electric bike conversion kit

a. Japanese high-technology motor b. Achieve a perfect combination of electric power and human power c. Torque sensor +Brushless controller +Anti-charging system +Motor +Indicating system of Battery d. Capacity +Automatic Sleep Mode system =dapu integrative motor e. Checking method of torque sensor with the Japanese patent. f. Assistant force rate 1-1 1-3. g. Assistant force level set by a customer’s request. h. Anti-charging when slope down or slide. i. Weight 4.7kg j. Diameter 201MM k. Rated Power 250W l. Rated Voltage 24V DC m. Automatic system Sleep Mode. n. Low Power system.