I have been using these batteries in my smoke detectors and have not experienced any issues so far.

I am thankful for the advancements in smoke and CO detector technology, but the issue with the batteries dying in the middle of the night is frustrating. This is why I prefer the Nest detectors, as they notify you via an app well before the batteries need to be replaced. However, I am still required to have detectors that connect to the condo system, which the Nest ones do not. Therefore, I have to rely on expensive battery backups for hardwired systems, as I want to ensure the safety of my neighbors.

Once again, I am very satisfied with this product, it was exactly as described. This was a repeat purchase and I am grateful. Thank you.

Seller is great, item was as described and shipping was quick. Highly recommend.

We bought these for our smoke detectors and they are working well so far!

I use these batteries for my fire alarms and they have proven to be very reliable. They last over a year and I only need to replace them annually. I have not experienced any leaks or dead batteries with this brand. They are a great value compared to more expensive name brands.

I have found these batteries to be perfect for my needs. I replace my smoke detector batteries annually and these 9V batteries are just what they require. They are durable and a great value for the price.

The Senior neighbors will love the perfect gift, and some will even get free installation!