Patent ID: 8423306

Claim:
One or more tangible computer-readable storage media having computer-executable instructions embodied thereon for performing a method of reliably indicating remaining operating time of a computer based on battery level, the method comprising: for a given computer-usage level, receiving a user-specified time interval that lapses between a battery level draining from a first threshold level to a second threshold level; associating a first level of battery charge with the first threshold level and a second level of battery charge with the second threshold level; determining when the charge remaining in the battery reaches the first level of battery charge associated with the first threshold level and presenting a first low-battery notification based on said determining for the given computer-usage level; determining when the charge remaining in the battery decreases to the second level of battery charge associated with the second threshold level and presenting a second low-battery notification based on said determining for the given computer-usage level; and adjusting at least one of the first threshold level and the second threshold level according to said user-specified time interval, thereby altering at least one of the first level of battery charge and the second level of battery charge at which a notification is received to provide an indication of battery charge remaining according to the user-specified time interval.