2 charging the battery, 3 battery level indicator, 4 power management – UTStarcom Handset User Manual
1.5.2 Charging the Battery
Connect the charger to a standard 100~240V AC wall outlet.
LED Off: Battery not attached to phone
LED Blinking fast (500msec): Battery problem. The battery
temperature is abnormal.
LED Blinking slow (1sec on, 3 sec off): Battery is charging.
Service Light: Charging completed
Note: In case of a sudden electric power interruption, the travel
charger may not function properly. If this occurs, disconnect the
travel charger from the wall outlet, and try charging again after 5
1.5.3 Battery Level Indicator
You can monitor the battery status by checking the battery level indicator.
The number of blocks indicates the battery’s condition as follows:
Flashing indicates discharged
1.5.4 Power Management
The criteria of measurement are in accordance with our internal
These operating times are for a new battery. Approximate values may vary
depending on network configuration, signal strength and handset usage.