A chemical power is an electrochemical device that converts chemical energy into electric energy through redox reactions of its internal substances, which can be categorized as the primary battery, the storage battery, and other types of batteries. The primary battery, also known as the one-shot battery, cannot be restored by recharging once its active materials are depleted and must be discarded. While the storage batteries, also known as secondary batteries, can be restored by recharging and reusing repeatedly.