HP h4000 - Manual (Page 40)

Managing the Battery
User’s Guide 3–15
Manually Monitoring the Battery
To manually monitor the battery power:
1. From the Start menu, tap Settings > System tab >
Power icon.
2. Tap OK.
Battery Saving Tip: Tap Start > Settings > System tab > Power >
Control tab, then tap the On battery power checkbox and set
it to turn your iPAQ Pocket PC off after a short time of not
being used.