z
The first time you use your computer
z
After it has been stored for awhile
z
If the gas gauge has become inaccurate.
z
Every three months for optimum performance
Windows Battery Calibration
To run the Battery Calibration program select
Start, All Programs
, and
Mobile Computer Tools
. Next, select
Battery Calibration
. After starting calibration, the Battery Calibration application requires no further input from
the user. The calibration consists of four steps:
1. Partial Discharge - the battery is drained to a level below 90 %.
2. Charge - the battery is fully charged to 100 %.
3. Discharge and calibrate:
First, the battery is discharged all the way down to zero. Now the battery is 'calibrated' but not charged. You
may stop the process after this point and let the battery charge outside of the Battery Calibration application.
4. Charge - if the Battery Calibration continues running, the battery will fully charge to 100%.
Battery Calibration will take from 5 to 10 hours, depending on how much power the battery may already
contain.
NOTE
The unit will not go into suspend mode while Battery Calibration is running.
CAUTION
Do not disconnect AC power while Battery Calibration is running. If AC remains disconnected for
more than two minutes, the application will terminate.
CAUTION
Do not remove the battery while Battery Calibration is running. Doing so will cause the application to
terminate immediately.
Battery Charging
To charge the battery, install the battery pack and plug the AC adapter into the computer and an electrical outlet.
You can use your computer while charging the battery. However, this will increase the charging time.
NOTE
We suggest that you charge the battery pack before retiring for the day and let it charge overnight before
traveling. This ensures a fully charged battery for use the next day.
While the battery is charging, the Battery Power LED
will be active after 6-12 seconds and will stay lit until the
battery is fully charged. When the battery is fully charged, the Battery Power LED will turn off.
If your computer is turned off, a fully discharged battery will take about 3 hours to recharge. If your computer is
turned on and is not in suspend mode, it will take about 3-6 hours to recharge the battery. Refer to the following
table:
Charging
Discharging
System On
3-6 hours depending
on temperature and
processes running
3.5 hours
System Off
3 hours
Page 35 of 70
VR-2 Help
4/26/2007
file://C:\Documents and Settings\harwoodm\Local Settings\Temp\~hh3F7F.htm
