110 Mobile Computing
Running the computer on battery power
Maximizing battery life
To maximize the life of your battery pack:
❖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 below:
1Turn off the computer’s power.
2Disconnect the AC adapter and turn on the computer’s
power. If it does not turn on, go to step 4.
3Operate the computer on battery power for five minutes.
If the battery pack has at least five minutes of operating
time, continue operating until the battery pack is fully
discharged. If the battery light LED flashes or there is
some other warning to indicate a low battery, go to step 4.
4Connect the AC adapter to the computer and the power
cord to a power outlet. The DC-IN or AC power-light
LED should glow green, and the Battery LED should
glow amber to indicate that the battery pack is being
charged. If the DC-IN or AC power-light indicator does
not glow, power is not being supplied. Check the
connections for the AC adapter and power cord.
5Charge the battery pack until the Battery LED glows
green.
❖If you have extra battery packs, rotate their use.
❖If you will not be using the system for an extended period,
more than one month, remove the battery pack.
❖Disconnect the AC adapter when the battery is fully charged.
Overcharging makes the battery hot and shortens life.
❖If you are not going to use the computer for more than eight
hours, disconnect the AC adapter.
❖Store spare battery packs in a cool dry place out of direct
sunlight.