Toshiba M1 User Manual page 131

Running the computer on battery power
Sample Toshiba Power Saver Properties Dialog Box
The Power Save Modes tab displays the remaining amount of
time for each of the different power usage modes.
With repeated discharges and recharges, the battery's
capacity will gradually decrease. A frequently used older
battery will not power the computer for as long as a new
battery, even when both are fully charged.
HINT: Wait at least 16 seconds after turning on the computer
before trying to monitor the remaining battery power. The
computer needs this time to check the battery's remaining
capacity and perform its calculations.
Mobile Computing
131