Nokia C6-01 - Manual (Page 13)

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 synchronize your device while charging.
Charging over USB can take longer to start, and may not work if you connect through a
non-powered USB hub. Your device charges more quickly when connected to a wall
outlet.
When the battery is charging, the charging indicator light next to the USB connector is
lit. When the battery charge is low, the charging indicator light flashes. It may take a
while for charging to start.
Get started 13