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nest 2nd gen. Replaced low batteries with new lithium batteries and the unit doesn't respond

rgaila
Community Specialist
Community Specialist

Disclaimer: This thread was migrated from our previous version of the Google Nest Community. You can continue to receive updates on your thread issue here or simply ask, browse or more in the new Google Nest Community.

Original Poster:  Chris Cartter 

 

I replaced "low" batteries in my Nest Protect 2nd gen non-wired device after flawless operation for 2+ years. I used 6 Energizer Lithium AA batteries, same as what was used before. When I removed the first old battery, the device made a sound. After replacing with new batteries, the device appears to be dead. To verify, I put the old "low" batteries back in. Dead device. Do I have any options to resurrect this device?
 
5 REPLIES 5

rgaila
Community Specialist
Community Specialist

Hi Chris,

We're sorry to hear about your low battery issues! That's definitely concerning to have your device drained. Let's see what's going on here.

Due to the nature of your issue, I will be reaching out to you privately. Be on the lookout for an email from Google Nest Support with your specific case number in the subject line. Thank you so much for your patience!

-From Garrett DS,Community Specialist.

cmasto
Community Member

Interesting, I just had exactly the same thing happen with mine. It's from 2015 and I think it has lasted this long on the original set of batteries: they're marked "Not for retail trade" and have an expiration date of 2035, which given the 20 year shelf life suggests they were from 2015.

I finally got a low battery warning, so I put in a set of new Energizer Ultimate Lithium AAs. When I took the old ones out, it chirped once, and when I put the new ones it is now completely dead. It's not the batteries; I tried changing them again. I also tested the new batteries and they are all ~1.8 volts.

I have 10 of these Nest Protects and I hope they don't all have a failure mode where they die after changing the batteries. They're supposed to last 10 years but only have a 2 year warranty, so that's over a thousand dollars if they all fail.

cmasto
Community Member

I'm back a minute later to report that I seem to have solved my own problem. I was thinking about my limited experience with electronics as a hobby and I thought "maybe there's a capacitor or something that needs to discharge completely in order to reset properly", so I left the batteries out for about 5 minutes while I was writing the above post. I just put them back in and it came back to life.

So if anyone else sees this and has the same issue - try giving it a little break between removing the old batteries and putting the new ones in and see if that helps.

Markjosephp
Community Specialist
Community Specialist

Hello cmasto,

 

Thanks for posting and for updating us on what you've done to have your concern rectified — give yourself a pat on the back for a job well done!

 

I wanted to ensure you were good to go. Please let us know if you have any other questions or concerns.

 

Regards,

Mark

janthadeus
Community Specialist
Community Specialist

Hey there,

 

Glad that everything has been sorted out here. It looks like we can consider this one complete. I'll be locking this thread if we won't hear back from you again in 24 hours. Should that happen, feel free to create a new one if you have more questions or have other concerns in the future.

 

Thanks for the help here, Mark.

 

Best,

JT