Customer Ratings & Reviews

Over the years I have tried many brands of 9volt battery in smoke alarms,walky talkies,garage door openers and too many other applications to name,Energizer 9v batteries have not once failed to perform flawlessly, long lasting power and with proper use have never leaked once.

These things last forever. I use it for the smoke alarm and I change them once a year. They still have life in them but just to play it safe I always change them once a year. It's always best to do that because if you wait for the device to beep maybe you say I'll do it tomorrow or you procrastinate with other excuses. I like to do it the way I've been doing it.

Best batteries I have ever used. Never fail to properly operate my controllers

They last a lot longer then the other ones that I purchase

Was a great deal in order to yearly change the batteries for smoke alarms

Since I haven't had the need to use these batteries yet, I'm hoping that they're as good as the ones that I've bought in the past. One of the Eveready batteries that I bought from Best Buy in the past had a dent in it, but the Burbank store wasn't able to give me any kind of store credit since the time had run out on my receipt. I don't think that any one uses all the batteries that they buy as soon as they get them home.

Quality batteries that last a long time and are affordable.

They work perfectly in our smoke detectors. These batteries are always available at the front of the store.

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

Best Buy has great prices on all their batteries. Would highly recommend shopping there.

Good purchase. No problems at all. Pick up with no hassle.

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!

Great Price for replacement batteries for smoke detectors in the house. Always need to keep some on hand for those midnight wakeup beeps!

I use these for my smoke detectors, and they work well. I replace them once a year rather they need them or not.

Great. They worked out great. Good purchase. Used them for fire detectors

we received the batteries on time, It is very convenient to have them in the house for when we need them

What can I say, the batteries that keep on ticking!

Best Buy Always the place to getbwhat I need today!

Energizer battles seem to be best them seem to last a long time. No complaints I would recommending them.

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.