29Battery PackThe battery pack is the internal power source for the Tablet PC. It is rechargeableusing the AC adapter.NOTE: Care and maintenance information for the battery isprovided in the “Battery Pack Guidelines” section in Chapter7.Chargi ng the Battery PackNOTE: Charging will not start if the battery’s temperature isoutside the allowed range, which is between 0 C (32 F) and50 C (122 F). Once the battery’s temperature meets therequirements, charging automatically resumes. During charging, do not disconnect the AC adapter before thebattery has been fully charged; otherwise you will get aprematurely charged battery.To charge the battery pack, connect the AC adapter to the Tablet PC and an electricaloutlet. The Battery Charge Indicator ( ) on the Tablet PC glows amber toindicate that charging is in progress. You are advised to keep the Tablet PC poweroff while the battery is being charged. When the battery is fully charged, the BatteryCharge Indicator glows green.It takes approximately 2.5 hours to fully charge the battery pack.CAUTION: After the Tablet PC has been fully recharged, do notimmediately disconnect and reconnect the AC adapter to chargeit again. Doing so may damage the battery.NOTE: The battery level may automatically lessen due to theself-discharge process (0.21% per day), even when the batterypack is fully charged (100%). This happens no matter if thebattery pack is installed in the Tablet PC.
