Sanyo SCP-4000 - Manual (Page 18)

8
Using the battery
Your Sprint PCS Phone comes with a rechargeable Lithium Ion
battery. Remember to fully charge your battery as soon as the
charge becomes low in order to maximize your talk and standby
times.
Installing and removing the battery
The battery snaps easily onto the back of the phone (bottom end
first) for quick installation and removal. Make sure to turn the
power off before removing the battery. Otherwise, you could lose
stored numbers and messages.
Charging the battery
You can tell whether or not your battery needs to be recharged by
checking the upper-right corner of your display screen.
When the battery charge level gets low, the phone will beep and
the battery icon will blink. A warning will also appear on
your screen prompting you to recharge your battery.
If the battery level gets too low, the phone will turn off
automatically. A series of alert tones will sound just before the
phone turns itself off. If this happens, unfortunately, you’ll lose
whatever you were just doing. So watch that indicator and make
sure your battery charge level is okay.
To charge your battery, you should use the standard AC adapter, or
the optional dual-slot desktop charger or cigarette lighter adapter.