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Customer Reviews

Energizer "9V" 2-Pack Batteries

Ratings

4.8

Average rating based on 2078 reviews

Rating Breakdown

1772 reviewers rated this product 5 stars.

262 reviewers rated this product 4 stars.

31 reviewers rated this product 3 stars.

7 reviewers rated this product 2 stars.

6 reviewers rated this product 1 stars.

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Reviewer Recommendation

98%

Of the 1976 reviewers who responded, 1946 would recommend this product.

Key Considerations

Averages based on how reviewers feel this product performs.

Quality:
Value:
Ease of Use:

What customers are saying

Customers overwhelmingly praise these 9V batteries for exceptional longevity and reliability, with nearly universal satisfaction. Most emphasize they last significantly longer than competing brands and perform dependably in critical safety devices like smoke detectors and carbon monoxide alarms. Reviewers consistently highlight reduced replacement frequency and confidence in performance across household uses including toys and electronics. The brand reputation for quality is deeply trusted, with many customers stating they exclusively choose this option for life-safety applications. While a few note slightly higher pricing, most agree the extended lifespan justifies the cost, making them a preferred choice for hard-to-reach or essential devices.

This summary is generated by AI using customer reviews from multiple languages and translated into English.

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  • Customer rating: 5 out of 5 stars

    Energizer MAX Alkaline 9 Volt Batteries!

    Reviewed by - April 22, 2023

    [This review was collected as part of a promotion.] The Energizer MAX Alkaline 9V Batteries, 2/Pack - Max Alkaline 9 volt Batteries provide my family a long-lasting power source for the devices I own, such as calculators, pencil sharpeners, cameras, flashlights and portable tape recorders. These amazing batteries are date-coded and 100 percent mercury-free. These batteries are designed to protect my expensive electronics from damaging leaks. Also, since these batteries are mercury-free they eliminate heavy metals and reduce impact on the environment. Also, these batteries hold power up to five years in storage, so that I am never left powerless. I have already recommended the Energizer MAX Alkaline 9V Batteries to many of my friends and family and several of them have already purchased and have used these batteries and they all love the way these batteries hold power up to five years in storage, so that they are never left powerless.

    Review originally posted on Energizer Brands

    Yes, I would recommend this to a friend.

  • Customer rating: 5 out of 5 stars

    Great 9 volt battery

    Reviewed by - August 2, 2025

    Great 9 volt battery from Energizer! We use these in smoke detectors and the like and the last forever. They preform as expected and are fairly priced.

    Review originally posted on influenster.com


  • Customer rating: 5 out of 5 stars

    Reliable power every time

    Reviewed by - April 18, 2026

    The Energizer Max Alkaline 9V Batteries offer very reliable consistency, maintaining stable voltage throughout their use, which is essential for important devices. In terms of value, they're a great investment since they last long and reduce the need for frequent replacements. The size is the standard 9V, perfect for smoke detectors, remotes, and other essential electronics. Their funcionality is excellent-they deliver long-lasting performance and include leak protection for added safety. The design is sturdy and practical, easy to install, with clear packaging and simple instructions.

    Review originally posted on influenster.com


  • Customer rating: 5 out of 5 stars

    Long lasting battery

    Reviewed by - May 14, 2021

    [This review was collected as part of a promotion.] These batteries are well built and long-lasting. I am impressed with how long they truly last compared to other brands I have tried in the past. I like that these batteries have a long shelf life and can hold power up to 5 years while in storage. These are perfect for flashlights especially when weather can be unpredictable and power goes out. It's great knowing I can count on these batteries to still work even if they haven't been used for awhile. These batteries are perfect for my smoke detectors and my children's toys. I highly recommend these batteries because I can count on them to work when most needed and they last a long time. They do not disappoint.

    Review originally posted on Energizer Brands

    Yes, I would recommend this to a friend.

  • Customer rating: 5 out of 5 stars

    Great batteries

    Reviewed by - April 27, 2023

    [This review was collected as part of a promotion.] These energizer max alkaline 9 volt batteries are top of the line. They have a 5 year shelf life unopened which is great for storage or backups. I’m using mine to replace the battery backup in our smoke detectors/alarms. I have been pleased with the battery life and haven’t been woken up with low battery alarms on my smoke alarms (thankfully). Overall a high quality product that I trust. Would recommend.

    Review originally posted on Energizer Brands

    Yes, I would recommend this to a friend.

  • Customer rating: 5 out of 5 stars

    Trustworthy

    Reviewed by - February 28, 2020

    [This review was collected as part of a promotion.] I got this battery because I needed something trustworthy and maximum strength, long lasting for my smoke detectors and carbon monoxide detectors . With these batteries I know my family is safe, until the recommended time to change them . We set off our smoke detectors a lot while cooking but with these long lasting batteries I know they are still working.

    Review originally posted on Energizer Brands

    Yes, I would recommend this to a friend.

  • Customer rating: 5 out of 5 stars

    Strong 9V Battery

    Reviewed by - June 26, 2024

    It's always handy to keep these around the house. They're compatible with any 9V requirement and provide lasting power for your device. They have a 5-year shelf life and I haven't had any issues, even with ones that are older. The multi-pack is a good value compared to buying them individually and they always end up getting used for something.

    Review originally posted on influenster.com


  • Customer rating: 5 out of 5 stars

    Wonderful long lasting power

    Reviewed by - June 27, 2020

    [This review was collected as part of a promotion.] I have always used Energizer products in my home and on the job. They have always performed without flaw and I can’t remember 1 time when their batteries leaked into my device. I especially like to use energizer batteries in all my smoke alarms knowing that I am well protected and they last along time. This saves having to get on a ladder.

    Review originally posted on Energizer Brands

    Yes, I would recommend this to a friend.

  • Customer rating: 5 out of 5 stars

    Lasts longer

    Reviewed by - March 23, 2020

    [This review was collected as part of a promotion.] My son has a small toy truck that he loves to play with. It is his favorite because it lights up and makes noise. Most brands that we have tried died within a week, but Energizer Max has been going strong for two weeks now. I'm very pleased with Energizer Max, and I recommend this brand.

    Review originally posted on Energizer Brands

    Yes, I would recommend this to a friend.

  • Customer rating: 5 out of 5 stars

    Last a long time

    Reviewed by - October 26, 2023

    I like to use Energizer batteries for everything from my remote controls to my smoke detectors. Energizer batteries last the longest out of all the batteries I've used. We also use them at work and buy the industrial packs. No neat packaging and the price is right. 👍👍 for me

    Review originally posted on influenster.com