Amazon Basics 8-Pack 9V Alkaline Batteries, 5-Year Shelf Life - for Smoke/CO Detector, Electronics & AudioThe Nordic Swan EcolabelThe Nordic Swan Ecolabel

These are OK batteries, but I would not recommend buying a lot of them for storage for later use, as I did. (All sizes). Brand name batteries usually have about a 10 year shelf life. I have a large home, 15 rooms total with a smoke/heat detectors in every room except the bathrooms and laundry room. So I bought quite a few of these in a couple of orders because I sawp out annually. A little over a year after my first purchase, half the D's in the box were discharged and most of the AA and AAA's were done. Buy them to use immediately, not to use later would be my suggestion.

I love Amazon Basics batteries and have noet had any problems with them. They power our devices as we expect and they are a good value from a brand that we trust. I have another size in our flameless candles that are set to come on every night, Those batteries have consistently powered the candles for 4-5 months straight before needing to be replaced. The candles are set to come on automatically every night for about 4 hours.

These 9v batteries are perfect for the around the home needs. We needed some four battery hungry smoke detectors, and the price to quantity in this package makes them a great value for this need. Nothing worse than the smoke alarm going off at 2am and not having a spare/replacement 9v to handle the early am noise.

I've been using the AmazonBasics 9V batteries for various household devices like smoke detectors, remote controls, and wireless sensors. For the price, they offer great value and perform reliably.

The size was a perfect fit for our smoke detectors. We installed them about 2 months ago and they have lasted. They are very functional for smoke detectors.

I dislike buying batteries altogether. If you’re going to buy a battery, use the Amazon basics and every category. Excellent quality and comparable to energizer for 50 to 70% of the cost.

These are least expensive of the quality batteries. And they do work fine, for a long time.

Great!! Always love buying Amazon batteries. They are reasonably priced, great for replacing our smoke detectors and easy to order right to our doorstep :)