Patent ID: 8817000

Claim:
A method for displaying power sustainability data for a battery, the method comprising: providing a processor and a memory device coupled to the processor; receiving power sustainability data at a plurality of times, the power sustainability data comprising a remaining battery capacity and a light exposure level; storing data values in the memory device, the data values associated with the power sustainability data and the plurality of times; obtaining most recently received data values for remaining battery capacity and light exposure level; determining, using the processor, an energy reserve level of the remaining battery capacity; determining, using the processor, a trend of the remaining battery capacity characterized as increasing, decreasing, or unchanging; generating a message corresponding to the energy reserve level and the trend of the remaining battery capacity; displaying, on a display device, the message and the most recently received data values for remaining battery capacity and light exposure levels; obtaining a plurality of remaining battery capacity data values and a plurality of light exposure level data values; and displaying the plurality of remaining battery capacity data values as a function of time.