Sprint Nextel MM-A800 - Manual (Page 39)

Section 2A: Your Sprint PCS Phone: The Basics 25
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Using Your Phone’s Battery and Charger
Battery Capacity
Your Sprint PCS Phone is equipped with a Lithium Ion
(Li-Ion) battery. The standard battery provides up to 4.0
hours of continuous digital talk time.
When the battery reaches 5% of its capacity, the battery
icon blinks. When there are approximately two minutes of
talk time left, the phone sounds an audible alert and then
powers down.
Note: Long backlight settings, searching for service, vibrate
mode, and browser use affect the battery talk and standby
times.
Tip: Be sure to watch your phone’s battery level indicator and
charge the battery before it runs out of power.