“I see this modem now has battery backup. Will the batteries used on the Arris TM822G model work in your R model?”

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• Yes

  Answered by Cinema100 6 years ago

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• I can't say for sure but Amazon shows the same the same battery I ordered as an accessory for the TM822G. The first battery I got from Amazon was DOA and after 5 days of charging in the modem the battery light was flashing. The replacement battery worked immediately, solid green light from the moment I installed it in the TM822R.

  Answered by Pickleballer 6 years ago

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