Samsung SCH-I910ZKAVZW - Manual (Page 15)

Getting Started 12
There is also an internal backup battery that saves all phone
settings if the regular battery is discharged. The internal battery
maintains data for approximately four hours. This internal backup
battery needs an initial charge of 24 hours.
Perform ActiveSync operations or use a backup utility frequently
to avoid losing any information in case the battery is fully
discharged. For more information see “Synchronization” on
page 145.
Battery tab - Charge state
The Battery tab allows you to view the current power state of
the Li-Ion battery. To perform a battery check using the Start
menu:
1. From the Today screen, tap the right soft key function Main
Menu ➔ Settings ➔ System tab ➔ Power .
Battery Power tab - Power parameters
The Battery Power tab allows you to set the following battery
power parameters for your device.
1. The On Battery Power screen displays. If you wish to have
the device turn off when not in use, select: Turn off device
in the first drop-down box.
Battery power remaining:
Main Battery: Li Ion