https://www.googlenestcommunity.com/t5/Nest-Protect/Chirping-despite-new-batteries/m-p/122618#M2569 <P>Unit is less than 6 months old and started chirping once per minute with NO light. I replaced the batteries and it was fine for 4-5 days, then started chirping again. I have 8 other units and they’re all fine… any suggestions?&nbsp;</P> Mon, 14 Mar 2022 13:42:10 GMT JooJooHooHoo 2022-03-14T13:42:10Z https://www.googlenestcommunity.com/t5/Nest-Protect/Chirping-despite-new-batteries/m-p/122618#M2569 <P>Unit is less than 6 months old and started chirping once per minute with NO light. I replaced the batteries and it was fine for 4-5 days, then started chirping again. I have 8 other units and they’re all fine… any suggestions?&nbsp;</P> Mon, 14 Mar 2022 13:42:10 GMT https://www.googlenestcommunity.com/t5/Nest-Protect/Chirping-despite-new-batteries/m-p/122618#M2569 JooJooHooHoo 2022-03-14T13:42:10Z https://www.googlenestcommunity.com/t5/Nest-Protect/Chirping-despite-new-batteries/m-p/124932#M2598 <P>Did you use lithium batteries? I had a similar issue until I realized that you need to use special lithium AA batteries.</P> Thu, 17 Mar 2022 18:51:59 GMT https://www.googlenestcommunity.com/t5/Nest-Protect/Chirping-despite-new-batteries/m-p/124932#M2598 jfuller 2022-03-17T18:51:59Z