Nokia N8–00 User Manual page 14

14 Get started
You do not need to charge the battery for a specific length of time, and you can use the
device while it is charging.
If the battery is completely discharged, it may take several minutes before the charging
indicator appears on the display or before any calls can be made.
If the battery has not been used for a long time, to begin charging, you may need to
connect the charger, then disconnect and reconnect it.
Tip: You can also use a compatible USB charger to charge your battery.
Charge the battery over USB
Battery low, but you don't have a charger with you? You can use a compatible USB cable
to connect to a compatible device, such as a computer.
To avoid breaking the charger connector, be careful when connecting or disconnecting
the charger cable.
If connected to a computer, you can synchronise your device while charging.