Patent ID: 9664746
Date: 2017-05-30
CPC Classifications: G01R,G06F

Claim:
1. A method of backing up, based upon an available battery capacity of at least one backup battery cell of at least one battery subsystem, data from an electronic system, the method comprising: detecting a first operating mode of the at least one battery subsystem that is a maintenance discharge cycle operating mode; calculating the available battery capacity, in response to the first operating mode of the at least one battery subsystem and by using a first algorithm based upon a minimum battery capacity; detecting a second operating mode of the at least one battery subsystem that is a normal operating mode; calculating the available battery capacity, in response to the second operating mode of the at least one battery subsystem and by using a second algorithm based upon a maximum battery capacity; comparing the available battery capacity to a battery capacity sufficient to complete a backup operation; detecting a backup trigger condition that includes a power bus voltage level that is less than a specified minimum voltage level; and backing up, in response to the backup trigger condition and in response to the available battery capacity being sufficient to complete a backup operation, data from the electronic system.