Nokia N900 User Giude page 12

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4 Replace the back cover. Keep the device facing down
when replacing the cover. Make sure the cover is properly
closed.
Charge the battery
Your battery has been partially charged at the factory. If the
device indicates a low charge, do the following:
Charge the battery using the charger
1 Connect the charger to a wall outlet.
2 Connect the charger to the micro USB connector of the
device.
3 When the device indicates a full charge, disconnect the
charger from the device, then from the wall outlet.
The notification light blinks when the device is charging. The
notification light stays lit when the battery is fully charged.
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 notification light starts blinking or before any calls
can be made.
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