Comcast

Menu
Support XFINITY Voice Install a Battery Into Your XFINITY Voice Modem

Introduction

If you have recently purchased an XFINITY Voice backup battery, please click on the appropriate link below to receive simple step-by-step instructions to install a new battery into your modem.

Check Your Modem Type

Click on your modem type below. Your modem type can be found on the front or bottom of the device.

If you need technical assistance with your battery, please contact us from your mobile phone and we’ll take you step-by-step thorough the directions. (Note: If your XFINITY Voice modem is equipped with two battery slots, only one battery is needed in order to receive up to eight hours of backup power.)

Recycle Your Used Battery

For detailed instructions on how to recycle your used battery please click here.

Find this article at:

http://customer.comcast.com/help-and-support/phone/installing-battery-into-voice-modem/