User's Manual

Battery [51]
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Battery power levels
The phone uses all the power in the external battery before
it starts to use the internal battery.
The battery icon only tracks one battery at a time. It
reflects the charge level of the external battery (if
attached) as long as it has a charge. Otherwise, it tracks
the internal battery level. The more black bars there are,
the fuller the battery is.
When your battery is very low, the icon on your display
blinks, the phone beeps, and a message alerts you to the
low battery level. Press the key under [OK] to
acknowledge the message.
Tip: To reduce unnecessary drain on your battery, turn
backlighting to “always off.” (See “Display” on page 40.)
Hot swapping
If the external battery runs out of power during a call, the
internal battery takes over automatically. This is called hot
swapping. When you acknowledge the low battery message
and remove the external battery, the battery icon starts
displaying the status of the internal battery.