I purchased three Nest Protect Smoke Detectors over the course of a few years. The first two will now not function for more than a few hours to a day with new batteries. I expect to have the same issue soon with the third one. I have had to disconnect the two smoke detectors entirely. I called Google Nest and was told that as they are out of warranty, they will do nothing to replace these defective products or provide any kind of discount for me to purchase new ones. The product is intended to last for 10 years, but are only lasting a few years. I will not buy more of this product and will not purchase any further Google products in the future. I also intend to post this anywhere I can to forewarn other people before they waste a lot of money on a product that will not last more than a few years. Google is essentially scamming people who are just trying to protect their home and families.
Oh jeez- that sounds like an ordeal. Hope mine don't have that problem as they are also out of warranty.
The only advice I can give is to be sure to use the exact battery Nest recommends-- the Energizer Ultimate Lithium AA (L91)
@chelseam that certainly hasn’t been easy for you and we really wanted to help you with this one. To confirm, is your Nest Protect the one with 3 batteries or 6? What are the troubleshooting steps you've done? Aside from what JillG has shared, you might want to double check the light status of your Nest Protect whenever you replace the batteries. Also, try pressing the middle button one time and see what it says.
Keep us posted.
Thanks for answering, JillG.