Patent ID: 8084998

Claim:
A method of controlling a storage voltage of a battery pack with control electronics for an electronic device, comprising the steps of: a) sensing a storage voltage of one or more cells of the battery pack; b) sensing a change in the storage voltage over a time period; c) determining, for the time period: i) whether the storage voltage is within a predetermined range of voltage at any time during that time period, ii) whether the storage voltage is at or above a predetermined voltage at any time during that time period, and iii) whether the change in the storage voltage over the time period is at or below a threshold rate of change; and d) triggering a discharge mechanism if, i) the change in the storage voltage over the time period is at or below the threshold rate of change, and the storage voltage is within the predetermined range of voltage at any time during that time period, to thereby adjust the storage voltage to below the predetermined range of voltage; or ii) the change in the storage voltage over the time period is at or below the threshold rate of change, and the storage voltage is at or above the predetermined voltage at any time during that time period, to thereby adjust the storage voltage to below the predetermined voltage.