AT&T WF721 User Manual page 10

Install the battery
1
Insert the battery.
Note: Battery must be installed at all times for your
Wireless Home Phone device to operate.
Install the battery cover.
Notes:
• The battery must be installed at all times for your
Wireless Home Phone device to operate properly, even
when plugged into a power source. It may take fi ve (5) hours
to fully charge (battery will charge inside the device while
connected to a power supply).
• Charge time may be impacted by environmental factors,
and the battery will stop charging when the ambient
temperature is outside of the temperature range allowed
for charging (32 °F – 131 °F).
Getting started 5