M3 Mobile M3 SKY User Manual page 13

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SystemPower.
In M3 SKY, it will always indicate as 100 while charging.
Getting Started
13