Philips C922 - Manual (Page 8)

6
Charging and
Discharging
The battery can be charged and discharged hundreds of
times. However, a time will come when it has reached the end
of its useful life. If the operating time (i.e. talk and standby
time) is noticeably shorter than normal, then it is time to
replace the battery.
If, for any reason, you do not use the charger for a long
period of time, disconnect it from the power source. Do not
leave the battery in the charger for any period longer than one
week, as over-charging can reduce the life of the battery. If left
unused, a fully charged battery will discharge itself in about
one week at room temperature.
To maintain optimum operating times, you should discharge
the battery from time to time. To discharge the battery, leave
the handset switched on and do not put it in the charger, then
wait until it switches itself off. Do not use any other method for
discharging the battery.
Extreme temperatures affect the battery charging capability.
Charging the Battery
Initial
Operation
Before you use your handset for the first time, charge the bat-
tery for a minimum of 8 hours. This helps to increase the life of
the battery. Regularly place the handset in the charger to
obtain the optimum level of battery charge.
Spare Battery
Pack Charging
To charge a spare battery, open the cover on the inside of the
charger (1). Place the spare battery in the compartment pro-
vided (2), then close the cover (3).