TabletKiosk eo a7400 - Manual (Page 40)

22 Chapter 03: Battery Usage and Care
Using the Batteries for the First Time
Before using the Tablet PC on battery power for the first time,
the batteries should be fully charged.
On the front near the top right
of the eo a7400 are two battery
status indicators. These indica-
tors will track the charging
status of the two Lithium-Ion
battery packs located inside
the machine and on the back
of the tablet (see the chapter
entitled Touring Your eo a7400
Ultra-Mobile Tablet PC for the
location of the indicators and
battery pack).
Partially discharged batteries will cause the indicators to glow
orange when attached to an external power source. When each
battery is fully charged, its corresponding indicator will turn
green. Be sure that both indicators have turned green before at-
tempting to run the eo a7400 on battery power for the first time.
Calibrating the batteries
After using the system for a while, you may find that battery
performance diminishes. This is normal for Lithium-Ion batteries,
however if you see a large drop off in capacity, the batteries may
simply need to be calibrated.
NOTE: This can happen if the Tablet PC is mostly used while connected
in to an external power source. If this is your typical usage model,
you should consider calibrating the batteries every month or two to
maintain optimal capacity.
To calibrate the batteries, follow these steps:
1. Turn the computer off. Connect the AC adapter and let the
batteries fully charge.