The use of electric bicycles is in a bumpy state for a long time, the amplitude is severe, the power connector for connecting the motor and the battery on the body needs to have a high standard of vibration resistance, the connection is strong, and the refusal to fall off. Amass connector, button-type installation and locking mode, strong connection, no loosening and falling off phenomenon; Internal multiple waterproof rings, when connected to the state can reach IP65 waterproof grade (or above), not afraid of environmental challenges.