User's Handbook

Chapter 2. Using the Tablet
Using the battery
Table 4 shows the approximate time required to charge the battery
level to 100%.
Table 4 Approximate battery charge time
Battery pack capacity
55 watt hours (7600 mAh)
68.5 watt hours (9250 mAh)
Charge time Battery Pack PN
3.5 hours BTP-87W3
4.5 hours 909T2021F
If you have an external battery charger
1.
2.
3.
Remove the battery pack (see page 55).
Use the external battery charger to charge the battery.
Install the battery (see page 57).
Removing and installing the battery
You can remove the battery and use an (optional) external charger to
charge it.
Removing the battery
1. To swap with a charged battery:
Use one of the methods described in “Suspending operation”
on page 34 to suspend operation.
If a charged battery is not available:
Save your work and close all running programs; then shut
down the computer or put the computer in Hibernation mode
(see “Suspending operation” on page 34).
iX104C5 User’s Handbook
Note: To avoid losing unsaved data, wait until the computer
has completed switching to Suspended mode before
removing the battery.
55