Rechargeable mechanical apparatus used for making airflow or increase air pressure to move air or gas from one place to another. It adopts the new technologies, the direct-drive exterior rotor which has excellent high rigidity, high response, high precision, higher torque and efficiency, the brushless motor which reduces the temperature rise of the motor and lowers the current, and the lithium battery used in EV (electrical vehicle) which is more durable, safer than the normal type, greatly improve the lifetime and stability.
Rechargeable mechanical apparatus used for making airflow or increase air pressure to move air or gas from one place to another. It adopts the new technologies, the direct-drive exterior rotor which has excellent high rigidity, high response, high precision, higher torque and efficiency, the brushless motor which reduces the temperature rise of the motor and lowers the current, and the lithium battery used in EV (electrical vehicle) which is more durable, safer than the normal type, greatly improve the lifetime and stability.