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User’s Manual 6-8
Power and Power-up Modes
Retaining data with power off
When you turn off your computer with fully charged batteries, the batteries
retain data for the following approximate time periods.
Retention Time
Extending battery life
To maximize the life of your battery packs:
■ At least once a month, disconnect the computer from a power source
and operate it on battery power until the battery pack fully discharges.
Before doing so, follow the steps as detailed below.
1. Turn off the computer's power.
2. Disconnect the AC adaptor and turn on the computer's power - if it does
not turn on then go to Step 4.
3. Operate the computer on battery power for five minutes. If you find that
the battery pack has at least five minutes of operating time, continue
operating until the battery pack is fully discharged, however, if the
Battery indicator flashes or there is some other warning to indicate a
low battery condition, go to Step 4.
4. Connect the AC adaptor to the DC IN 19V jack of the computer, and to
a wall outlet that is supplying power. The DC IN indicator should glow
green, and the Battery indicator should glow amber to indicate that the
battery pack is being charged, however, in the event that DC IN
indicator does not glow this indicates that power is not being supplied -
check the connections for the AC adaptor and the power cord.
5. Charge the battery pack until the Battery indicator glows green.
■ If you have extra battery packs, rotate their use.
■ If you will not be using the system for an extended period, for example
for more than one month, remove the battery pack from the computer.
■ Disconnect the AC adaptor when the battery is fully charged -
overcharging will make the battery hot and can shorten its operating life.
■ If you are not going to use the computer for more than eight hours,
disconnect the AC adaptor.
■ Store spare battery packs in a cool dry place out of direct sunlight.
Battery type State and Retention Time
Battery pack 1 day for 6 cell, 0.5 day for 3 cell (Sleep mode)
30 days for 3 cell, 60 days for 6 cell (shut down
mode)
RTC battery 30 days