Customer Ratings & Reviews

The long life of these batteries is great peace of mind that my electronic locks will go a long time before needing the next battery replacement.

Great product used it for thermostat, Energizer is a top battery.

they are what they are. Don’t break your head and just buy them if you need them.

That time of year to replace the battery in smoke detectors, great option

We bought these at an excellent price and have been very happy with them. I will buy more.

Fast check out. Excellent Fresh batteries for my smoke alarms.

Works great and got a huge discount withmy rewards.

I love the qualities of these batteries.... They are long lasting !!!!

Hands down the most decent batteries I've ever owned

Best Buy seems to be getting out of the battery business. There is very limited choice of products. If you think you will have a continuing need for them, consider stocking up now. Buying a multi-battery package also brings down the cost per battery considerably.

These are the only batteries for our smoke alarm. Very important place to have dependable batteries. I hope they never go off, but I want to know they will if needed.

Excellent product. We've been using them for years for our smoke detectors. Change them out once a year because they last a long time.

I have always used these for my smoke detectors. I sate them when I replace them. Every 6 months is my term. I found one that was a year old and still working

It was that time of year again when one's battery operated fire alarms need changing and this package was the perfect fit. The price was the best around as well.

Used my $5.00 Best Buy Rewards points for this purchase. Needed to replace the smoke alarm battery. Long lasting battery makes it ideal for a smoke alarm battery change!

The energizer MAX 9V Batteries, 9 Volt Alkaline Batteries is very good and last long time. It is the only brand that I use.

I have an electronic door lock on my front door, it is a bit of a pain in the butt to change that battery so I prefer to not have to do it very often! These last a long time, which I appreciate.

Yes, 9 V Energizer batteries on sale! Only Best Buy can rock out a super sale and include Energizer batteries. The finest four pack of 9 V batteries I’ve ever purchased. Thank you

Love energizer batteries! Never had an issue with them

This 9V battery comes as a twin pack. I needed to replace the battery in our smoke detector every year and it uses only 9V batteries. Since these come in twin packs and the newer version can retain their power for 5 years (in storage), this will save me a trip to the store next year and not have a lapse in the detector's operation. Power retention is key for my purchase.