AT&T Wireless Home Phone User Manual page 11

Install the Back-up Battery
Remove the lid from the battery compartment.
Insert the battery connection cable into the battery port.
Place the back-up battery in the battery slot and replace the
battery cover.
D uring a power failure, battery back-up enables voice calling
using a standard corded phone that does not require external
supplied power.
Notes:
• The back-up battery is intended for backup purposes only
and may take approximately five (5) hours to fully charge.
• Charge time may be impacted by environmental factors
and the back-up battery will stop charging when the ambient
temperature is outside of the temperature range allowed for
charging (32 °F - 131 °F).
• Remove the back-up battery if the device will be disconnected
from AC power for 15 days or more to avoid possible damage.
Connect the Power Cord
Insert the small end of the power cord into the Power port on
the back of your Wireless Home Phone device.
Plug the power cord into an electrical wall outlet that is not
controlled by a wall switch.
Getting Started 5