No. But if you are using an eMTA (cable modem with phone support), it has the option of installing a backup battery if you choose to do so. But it's not a requirement for operation.
Thank you for reaching out to us here @user_2t6hwp. You would not need a battery for your Xfinity modem. There are battery backups available for the device.
EG
Expert
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110K Messages
5 months ago
No. But if you are using an eMTA (cable modem with phone support), it has the option of installing a backup battery if you choose to do so. But it's not a requirement for operation.
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XfinityJohnG
Official Employee
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1.6K Messages
5 months ago
Thank you for reaching out to us here @user_2t6hwp. You would not need a battery for your Xfinity modem. There are battery backups available for the device.
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