AT&T CL82509 User Manual

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Battery installation & charging
Install the battery as shown below. Once you have installed the battery, the 
screen indicates the battery status (see table below). If necessary, place the 
handset in the telephone base or charger to charge the battery. For best 
performance, keep the handset in the charger when not in use. The battery is 
fully charged after 16 hours of continuous charging. See the table on the  
Technical specifications page of the user’s manual for battery 
operating times.
If the screen is blank, you need to charge the handset without interruption 
for at least 10 minutes to give the handset enough charge to use the 
telephone for a short time. The screen shows LOW BATTERY and the 
backlight is off until you have charged the battery without interruption for at 
least one hour. The following table summarizes the battery charge indicators 
and actions take.
Battery indicators
Battery status
Action
The screen is blank.
Battery has no charge and the 
handset cannot be used.
Charge without interruption until 
the screen shows LOW BATTERY 
(at least 10 minutes).
The screen shows PLACE 
IN CHARGER
 and      
flashes.
Battery has very little charge 
and the handset cannot be used.
Charge without interruption until 
the screen shows LOW BATTERY 
(at least four minutes).
The screen shows LOW 
BATTERY
 and    flashes. 
Battery has enough charge to 
be used for a short time.
Charge until the screen shows
HANDSET X (about one hour).
The screen shows 
HANDSET X.
Battery is charged.
To keep the battery charged, 
place it in the telephone base or 
charger when not in use.
NOTE: If you are on a phone call in low battery mode, you hear four short beeps 
every minute.
Step 1
Plug the battery securely into the 
connector inside the handset battery 
compartment, matching the color-coded 
label. Insert the supplied battery with the 
label THIS SIDE UP facing up as indicated.
Step 2
Align the cover flat against the 
battery compartment, then slide 
it upwards until it clicks into 
place.