Samsung SGH-T809OKATMB - Manual (Page 13)

Section 1: Getting Started 9
Activating Your Phone
Section 1
2. Plug the adapter into a standard AC wall outlet.
3. When charging is finished, unplug the adapter from the
power outlet and disconnect it from the phone.
Note: You must unplug the adapter before you remove the battery from the
phone during charging; otherwise, the phone could be damaged.
Low Battery Indicator
When the battery is weak and only a few minutes of talk
time remain, a warning tone sounds and the “Battery
low” message repeats at regular intervals on the display.