Samsung Galaxy S III - Manual (Page 15)

Getting Started 9
2. Press along the edge of the back cover (3) until you
have a secure seal.
Note: Make sure the battery is properly installed before
switching on the phone.
Charging a Battery
Your device is powered by a rechargeable Li-ion battery. The
Travel Charger that is used to charge the battery, is included
with your device. Use only Samsung-approved batteries and
chargers.
Note: You must fully charge the battery before using your
phone for the first time. A discharged battery recharges
fully in approximately 4 hours.
Note: Long backlight settings, searching for service, vibrate
mode, web browser use, and other variables may
reduce the battery’s talk and standby times.
Although you can use the phone while the battery is
charging, doing so will require additional charging time.
Using the Travel Charger
Important! Verify that the handset battery is installed prior to
connection. If the battery is not properly installed
and the wall charger is connected, the handset
may power off and on continuously, preventing
proper operation.