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Google Nest Protect (wired) battery: 3 × AA

The Google Nest Protect (wired) takes three AA 1.5V batteries.

AA

AA× 31.5V batteries

Also sold as LR6, E91, MN1500, 15A · AA details

Source: Google Nest Nest Protect (wired) support page

Varta Longlife Power AA 8 pack at Amazon for AA 1.5V alkaline battery (affiliate link, opens in new tab)Energizer Max AA at Amazon (affiliate link)

Before you swap it

  • Swap the whole set together. A half-flat battery left in with fresh ones drags the lot down.

Quick answers

Which battery goes in the Google Nest Protect (wired)?

Three AA 1.5V batteries.

Is LR6 the same as AA?

Yes. LR6, E91, MN1500 and 15A are all the same cell as AA, sold under another name.