Samsung SCH-S720ZKATFN - Manual (Page 9)

Getting Started 5
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.
After the first charge, you can use the phone while charging.
Warning!: Use only 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 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.
Tip: For helpful information about conserving battery power, see “Task
Manager” on page 9.
Non-Supported Batteries
Samsung phones do not support non-approved batteries.
Samsung charging accessories, such as the Wall/USB Charger,
will only charge 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.
Warning!: Using a non-approved battery may damage your phone.