Nokia Bluetooth Headset BH-602 - Manual (Page 21)

B a t t e r y i n f o r m a t i o n
21
4. Battery information
Your device is powered by a rechargeable battery. The
battery can be charged and discharged hundreds of times,
but it will eventually wear out. Recharge your battery only
with Nokia approved chargers designated for this device.
Unplug the charger from the electrical plug and the device
when not in use. Do not leave a fully charged battery
connected to a charger, since overcharging may shorten its
lifetime. If left unused, a fully charged battery will lose its
charge over time.
Never use any charger that is damaged.
Leaving the device in hot or cold places, such as in a closed
car in summer or winter conditions, will reduce the capacity
and lifetime of the battery. Always try to keep the battery
between 15°C and 25°C (59°F and 77°F). A device with a hot
or cold battery may not work temporarily, even when the
battery is fully charged. Battery performance is particularly
limited in temperatures well below freezing.