CHARGING
Using the included micro USB cable, plug the backup battery
into a 5 VDC USB charging source, such as a wall charger,
computer port, etc.
For fastest charging, use a source that is capable of
producing at least 2.0 amps of charging power. The nominal
charging time using a 2.0A source is about 11 hours.
During charging, the four charge level indicators will show
the current charge level.
Note that the battery should be charged before use.
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