Method and device for predicting battery life

A device comprising a processor configured to process life information of a battery, the processor comprising:

• an acquisition circuit configured to obtain a time taken for a voltage level of the battery in a charge mode to change for each of a plurality of voltage sections;
• and
• a prediction circuit configured to predict a state of health (SOH) of the battery based on ratio information determined by comparing the time obtained for each of the plurality of voltage sections with a reference time for each of the plurality of voltage sections,
• wherein when the time taken for some voltage sections of the plurality of voltage sections is obtained by the acquisition circuit, the prediction circuit is further configured to correct the predicted SOH of the battery based on the time taken for the voltage level of the battery in a discharge mode to change.