Getting started
5
Battery installation and charging
Battery installation
Install the battery as shown below.
IMPORTANT INFORMATION:
Use only the supplied rechargeable battery or replacement battery (model BT166342). To order, 
visit our website at www.telephones.att.com or call 1 (800) 222-3111. 
In Canada, dial 1 (866) 288-4268.
Plug the battery 
connector securely 
into the socket inside 
the handset battery 
compartment, matching 
the color-coded label.
1. Insert the supplied 
battery with the label 
THIS SIDE UP facing 
up as indicated.
2. Align the cover flat 
against the battery 
compartment, then 
slide it upwards until 
it clicks into place.
3.
Charge the handset by placing it 
face up in the telephone base or 
charger. The CHARGE light is on 
when charging.
4.
To replace the battery, press 
the tab and slide the battery 
compartment cover downwards. 
Lift out the old battery and 
disconnect it from the handset. 
Follow the instructions above to 
install and charge the new battery.
CHARGE light