HP H1930 - Manual (Page 33)

Managing the Battery
User’s Guide 3–5
Removing the Battery
To remove the battery from the iPAQ Pocket PC, lift the left side
of the battery and pull it out.
Ä CAUTION: Because most of the applications and data you install on
your iPAQ Pocket PC are held in memory (RAM), you need to reinstall
them if the battery completely discharges or if the battery is removed
from the unit for extended periods of time.
You do not need to reinstall applications and data installed in the
iPAQ File Store folder (not available on all models) because they are
saved in nonvolatile memory.