Customer Ratings & Reviews

Among the longest lasting 9 volt batteries I've ever used.

For those devices that you use all the time, these batteries last longer than the other brands. Great quality and very dependable!

I bought this battery without reading reviews, which is normally a huge risk. But this time it paid off. My smoke detector worked instantly when I plugged the wired connector into the battery. “Ta daaaa!” I sang out loud as the beautifully engineered(these Energizer engineers must be geniuses to have designed such a small powerhouse!) and delightfully crafted circular prongs met the contact points on my smoke alarm, sending a burst of clean power to my starving smoke alarm. I felt a sense of calm and assurance that I hadn’t felt in a long time after installing this little wonder. No worries, Energizer was here! Who can put a price on piece of mind? I thoroughly recommend this little 9v wonder!

Energizer is a great batter. It’s the one I will always pick first.

Energizer is a good brand. THe 9V battery is very common for smoke detector. Easy to install and the battery life is good. Highly recommend to other people.

Great batteries for a great price.....They are the best ones as compared to others.

Works well even in cold weather. Better pick for the price.

Got these on sale as a total member and you can’t beat it. Thanks Best Buy! Now I can change all of my smoke detector batteries during the day instead of finding “the one” at 2:00 am.

I installed these in my smoke detectors, and they are working

I love Energizer, they are definitely my preferred brand when it comes to reliable batteries. I use these 9Vs in my external audio microphone and they work wonderful and give the mic a super long battery life.

What can I say? These batteries worked fine. I used them in a remote control for a ceiling fan.

Perfect for my beeping smoke alarm. Haven't replaced it in over a year since.

Battery good, it work good, it make device work. No beeps.

Energizer batteries seem to last longer. Competitive prices.

Good value for a package of standard batteries. They last as long as any other name brand

MAX 9V Batteries (4-Pack) is the best product for this price gives good result for fire alarms i used all the time with best result .

I love Duracell Batteries. They always last for a very long time. I know these batteries have the power to run most everything I put them in. I use them in my metal detector and they last a long time.

I have been using this battery my kid's car. It has good power. It's long lasting battery. Definitely Energizer is my go to brand for all kinds of batteries.

The perfect price for a long lasting battery. I need it for my smoke detector and It lasts a long time.

These batteries are good just like Duracell. They hold their charge well and work a long time. I am pleased with my purchased.