M3 Mobile M3 POS User Manual page 12

Remove the spare battery from the charging slot when charging is done.
Battery attached to the PDA will be charged first than the spare battery on the cradle,
when two batteries are being charged at the same time.
M3 Mobile recommends replacing the battery if the battery is being

used for 2 years.
Battery capacity decrease when charging and discharging is

repeated.
Battery information can be checked in StartSettingsControl PanelPower.
Getting Started
12