If you have recently purchased an XFINITY Voice backup battery, follow these simple step-by-step instructions to install it into your wireless gateway. (Backup batteries are not available for purchase from Comcast by Unlimited Select customers or Local Select customers.)
XFINITY Voice Unlimited Select and Local Select (Virginia & West Virginia Only) Customers: Service (including 911 and emergency services) will not function during a power outage. A power outage will interrupt communication to and from non-voice communications equipment, including (but not limited to) alarm and security systems or devices, medical monitoring devices, personal emergency alert devices, home detection devices and fax machines connected to Unlimited Select or Local Select.
Install a Battery in Your Wireless Gateway
Place the wireless gateway on its side.
Remove the battery compartment door on the bottom panel.
Insert the backup battery into the compartment.
Close the battery compartment.
Recycle Your Used Battery
Find detailed instructions on how to recycle your used battery.