Customer Ratings & Reviews

Purchased a 4 pack to replace batteries in all my detectors. These energizers do the job. The price was great, delivery was quick. 4-pack is the right size because I have 4 detectors. Energizer batteries last the longest. Good product for a fair price price.

I purchased these batteries due to my previous batteries in my smoke detector alarm going bad, these new batteries are excellent and definitely worth the money. Ill be buying more to put in my other smoe detector alarms throughout my house.

Used a different batch of batteries for awhile that had horrible lifespan but these ones have been going strong for me much longer.

Energizer MAX 9V Batteries (4 Pack), 9 Volt Alkaline Batteries, good batteries for the price, good service, fast shipping.

They do what they need to do. Hopefully they last.

Works like normal batteries no complaints we recommend

My Panasonic transistor radio was not working properly or finding the stations I was looking for even when I turned the dial. I replaced the battery and low and behold it works as good as it did when I got it for Christmas in 1972

You know the quality is going to be good and it's going to last long if it's an Energizer battery. Use the 9 volt in my smoke detectors, They tend to be pricey, but with a sale and a bonus certificate it was a great buy.

Great products.. we use them in smoke detectors which we have 9

they worked well and have held a long charge for my fire alarms in my house for years

The batteries are great for smoke detecters. These batteries can last longer than most. I've used these before and change them once a year. I suggest that anyone should buy the following batteries. Great product!!!

I like that these come in a 4 pack, 4 smoke detectors, 4 batteries. 9v cost a little more but I used a $5 certificate so it made these a good deal. They last way longer than a year so well worth the cost

Energizer Max 9V are great batteries to keep on hand for spares!

Energizer bunny batteries. Need I say more. Work like they are suppose too

These 9 volt batteries were on clearance. They are great batteries at a hood price. I should have bought a few more.

I love this batteries because I used every year for alarm systems plus outside garage door opener program.

Not much to say here he’s a batteries they work plugged into my smoke detector I change the batteries for these every six months never giving me a problem

Works as intended. I believe that the battery life is almost as long as its main name brand competitor.

My batteries seen to last longer when I purchase them from BestBuy. I don't know why they last when I purchase from BestBuy but I'm not going to try to figure it out. I will just keep purchasing from BestBuy.

They keep going, and going, and going. Very trusted and well liked: plenty of juice, while others go out faster.