We offer a CE approved, compatible battery for this HP PDA.
It is highly recommended to charge your new battery for at least 12 hours prior to use. Please also be aware that PDA batteries usually need to be charged & discharged at least 4 times till they reach their best standby time, and should be fully discharged and fully recharged at least once a month. It is normal for a new battery to get warm while being charged (although not excessively hot!).