Compaq Presario V2000 Hardware-Software Guide - Page 64

Calibrating a Battery Pack, When to Calibrate

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Power Calibrating a Battery Pack When to Calibrate Even if a battery pack is heavily used, calibration should be necessary only once a month. You do not have to calibrate a new battery pack before first use. Calibration does not usually increase battery run time, but it can increase the accuracy of battery charge displays, especially under the following conditions: ■ When the battery pack has been unused for one month or more. ■ When the notebook has been running primarily on external power (and rarely on battery power) for more than one month. ■ When battery charge displays report large changes in the percent of power remaining within 2 minutes. For example, if the Power Meter displays 20 percent of a full charge remaining and then less than 2 minutes later displays only 5 percent of a full charge remaining, the rapid drop in charge remaining indicates that the battery pack needs calibration. For more information about battery charge displays, refer to the "Monitoring the Charge in a Battery Pack" section earlier in this chapter. Hardware and Software Guide 3-19

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Power
Hardware and Software Guide
3–19
Calibrating a Battery Pack
When to Calibrate
Even if a battery pack is heavily used, calibration should be
necessary only once a month. You do not have to calibrate a new
battery pack before first use.
Calibration does not usually increase battery run time, but it can
increase the accuracy of battery charge displays, especially under
the following conditions:
■
When the battery pack has been unused for one month
or more.
■
When the notebook has been running primarily on
external power (and rarely on battery power) for more
than one month.
■
When battery charge displays report large changes in the
percent of power remaining within 2 minutes. For example,
if the Power Meter displays 20 percent of a full charge
remaining and then less than 2 minutes later displays only
5 percent of a full charge remaining, the rapid drop in charge
remaining indicates that the battery pack needs calibration.
For more information about battery charge displays, refer to
the
“Monitoring the Charge in a Battery Pack”
section earlier
in this chapter.