Second generation Learning Thermostat from Nest Laboratories

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Source for replacement battery for the Nest Thermostat v2.0

Battery as detailed in this iFixit teardown.

Teardown URL

Picture of battery

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Ding ding ding!!! Recall???

Is that posted somewhere? I have never seen any customer service thread from this all-too-forward-thinking company. Mine is 5 yrs old, stopped working after 1, #paperweight



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2 Answers

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This unit uses a Lithium-Ion rechargeable battery. It is charged by the control lines or an auxiliary charger. It should no need replacing.

If it does then you need to contact NEST for a replacement unit under their product warranty.

Update (04/02/2017)

The 3rd & 4th gen units uses an Energizer Ultimate Lithium (L91) AA battery.

The 1st & 2nd gen units require a custom battery which is only available though NEST.

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So... what happens when we're out of warranty? Cookie cutter responses like this aren't helpful.


How is this a cookie cutter answer? At the time the product was brand new (note the date > Dec 2013). Today it would be a different answer! In fact they where recalled! If you haven't already returned yours do so. - If you read Mariela's post I explained how to gain access to it and the problem here it's not an off the shelf battery. Sorry still no joy in repairing them.


Hi Dan,

I have a third generation and it uses a custom battery as well.

Best Regards,



nest DOES NOT sell the custom batteries for their devices. ONLY devices.


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what do you think this battery type is ? model 1 ? 2 ?

battery pic

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