CALCULATION METHOD AND DETECTION DEVICE FOR BATTERY POWER

A calculation method and a detection device for detecting a power capacity of a battery of an electronic device are provided. In the calculation method, a highest voltage value and a lowest voltage value of the battery are received. A unit voltage difference value is generated according to the highest voltage value and the lowest voltage value. A voltage value of the battery is converted into voltage value data, and the electronic device is controlled in an operation mode to obtain a time length required for the voltage value data to drop to the unit voltage difference value in the operation mode. A total discharge capacity of the battery is generated according to the time length and a use time interval of the electronic device in the operation mode, and a current power capacity is generated according to the total discharge capacity.