Method of activating a battery

A method of activating a battery, applied to an electronic device which has a battery charging/discharging controller and keeps counting system time to acquire a system date, comprising the steps of:

• (1) acquiring data of the battery, including states, an activation number and a last activation date of the battery;
• (2) enabling the controller to perform an activation process on the battery and set the battery in an activation state when determining, based on the data of the battery, that the battery is in an inactivation state, the activation number of the battery is smaller than a predetermined activation number, and an interval between the last activation date of the battery and the system date is greater than a predetermined activation interval;
• (3) enabling the controller to discharge the battery, and enabling the controller to charge the battery when determining that a battery power level of the battery is less than a predetermined power level;
• and
• (4) enabling the controller to set the battery in the inactivation state after the activation process is finished.