5
Getting started
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.
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 the handset by placing it face up in 
the telephone base. The CHARGE light is on 
when charging.
4.
Align the cover flat against 
the battery compartment, 
then slide it upwards until 
it clicks into place.
3.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.
CHARGE light