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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.
■ 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.
■ Store spare battery packs in a cool dry place out of direct sunlight.
Replacing the battery pack
Please be aware that the battery pack is classified as a consumable item.
The operating life of the battery pack will gradually reduce through
repeated charging and discharging, and will need to be replaced when it
reaches the end of its operating life. In addition to this, you might also
replace a discharged battery pack with a charged spare when you are
operating your computer away from an AC power source for an extended
period of time.
Battery type State and Retention Time
Battery Pack
(48Wh/61Wh, 6 cells)
about 1 day (Sleep Mode)
about 30 days (Shut Down Mode)
RTC battery 30 days
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 white, 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 white.