Samsung SCH-U660CNAVZW - Manual (Page 11)

Getting Started 5
Using the Battery
Your phone is powered by a rechargeable, standard Li-Ion
battery. A Wall/USB Charger (Charging Head and USB cable) are
included with the phone, for charging the battery.
Note: The battery comes partially charged. You must fully charge the battery
before using your phone for the first time. A fully discharged battery
requires up to 4 hours of charge time.
Warning!: Use only Samsung-approved charging devices and batteries.
Samsung accessories are designed to maximize battery life. Using
other accessories may invalidate your warranty and may cause
damage.
Battery Indicator
The Battery Level icon in the Status Bar shows battery
power level. Before the battery becomes too low to operate, the
empty battery icon will flash and a tone will sound. If you continue
to operate the phone without charging, the phone will power off.
Non-Supported Batteries
Samsung phones do not support non-approved batteries.
Samsung charging accessories, such as the Wall/USB Charger,
will only charge Samsung-approved batteries. If you install a
non-approved battery and try to charge it, the phone will beep
and display the message:
“NON SUPPORTED BATTERY. SEE USER MANUAL”
If you receive this warning, battery charging is disabled.
Important!: Using a non-approved battery may damage your phone.