Amazon.com: Duracell Coppertop 9V Battery, 4 Count Pack, 9-Volt Battery with Long-lasting Power, All-Purpose Alkaline 9V Battery for Household and Office Devices : Health & Household

My fire alarm has started to chirping sounds that drive you up the wall. One goes off they all go. It’s just best to replace all the batteries at once. Than 1:30 am alarm and trying to find which one has gone bad. Value pack does the job nicely.

Moved back to a regular alkaline battery from the commercial alkaline batteries. They just last longer, and as a musician with wireless equipment, I need a dependable battery that will last. These fit the bill, and the price point was very good.

How does one review a battery? It's just a battery. Do you need 9-volt batteries? Yes? Well, then you won't be disappointed. Best Duracell batteries I have ever purchased online, from Amazon, in 2023, that arrived fully charged, still in original packaging, and that came in a convenient 4-pack. I needed more than three, but buying five would have been a waste of money. The four-pack hit the sweet spot. I'd write more, but I can't wait to get back to using these fine, wonderful batteries.