Patent ID: 9506987
Filing Date: 2016-11-29
CPC Classification: G01R,H01M,H02J,Y02E

Claim Text:
1. A method for estimating a capacity of a battery in a portable electronic device, comprising: electrically coupling a portable electronic device to a power source; charging, using the power source, a battery of the portable electronic device to a first state of charge, the first state of charge being above a threshold state of charge; performing a first open-circuit voltage measurement on the battery while the battery rests at the first state of charge; discharging the battery, while the portable electronic device remains electrically coupled to the power source, towards a second state of charge that is above the threshold state of charge; monitoring a current through the battery while discharging the battery towards the second state of charge, the monitored current representing a net change in charge for the battery; performing a second open-circuit voltage measurement on the battery while the battery rests at the second state of charge; estimating a capacity of the battery based on the first open-circuit voltage measurement, the second open-circuit voltage measurement, and the net change in charge of the battery; and displaying the estimate.