Battery Packs

Calibrating a Battery Pack

When to Calibrate

Calibrate an in-use battery pack whenever battery charge displays seem inaccurate or whenever the battery pack has not been used for one month or more. It should not be necessary to calibrate any battery pack, even if it is heavily used, more than once a month. It is not necessary to calibrate a new battery pack before first use.

How to Calibrate

Calibration requires three steps:

■“Charging the Battery Pack”

■“Discharging the Battery Pack”

■“Recharging the Battery Pack”

To initiate an unattended calibration in an optional Battery Charger or Multibattery Charger, follow the instructions included with the charger.

To calibrate a battery pack manually, follow the instructions in the following sections.

Charging the Battery Pack

You can charge the battery pack while the tablet PC is on or off, but the battery pack will charge faster while the tablet PC is off.

To charge the battery pack:

1. Insert the battery pack into the tablet PC.

3–16

Hardware Guide