New batteries come in a discharged condition and must be fully charged before
use.
It is recommended that you fully charge and discharge the new battery two to
four times to allow it to reach its maximum rated capacity
It is generally recommend an overnight charge (approximately twelve hours).
It is normal for a battery to become warm to the touch during charging and discharging.
When charging the battery for the first time, the device may indicate that charging
is complete after just 10 or 15 minutes.
This is a normal with rechargeable batteries. New batteries are hard for the
device to charge; they have never been fully charged and not broken in. Sometimes
the device's charger will stop charging a new battery before it is fully charged.
If this happens, remove the battery from the device and then reinsert it. The
charge cycle should begin again. This may happen several times during the first
battery charge. Don't worry; it's perfectly normal.