Amazon Basics 12-Pack 9V Alkaline Batteries, 5-Year Shelf Life - For Smoke/CO Detector, Electronics & Audio
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FREE refund/replacement until Jan 31, 2026
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Feb 5 – Feb 6
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Size: 12-Pack
Features
- IN THE BOX: 12-pack of 9-volt alkaline batteries for reliable performance across a wide range of devices
- DEVICE COMPATIBLE: Ideal for household items like garage door openers, smoke detectors, radios, toys, and more
- LONG LASTING: 5-year shelf life; store for emergencies or use right away
- EASY USE & STORAGE: Ships in Certified Frustration-Free Packaging; easy to open and store extras for later
Description
An Amazon Brand
Number of Batteries: 12 9V batteries required. (included)
Battery Cell Composition: Alkaline
Battery Capacity: 550 Milliamp Hours
Recommended Uses For Product: Radio,Smoke Detectors
Model: Alkaline batteries
Item Weight: 1.6 ounces
Product Dimensions: 1.02 x 0.67 x 1.89 inches
Item model number: 9V-12
Batteries: 12 9V batteries required. (included)
Manufacturer Part Number: 9V-12
Voltage: 9 Volts
Date First Available: October 12, 2022
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Feb 5 – Feb 6
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 4-Pack
Annoying fire alarm batteries needed replaced. Better price on amazon than in stores. Work good. Lol not waking up in a panic at night.
Reviewed in the United States on December 21, 2025 by chrissy
Size: 4-Pack
Dateline: A Darkened Room, a Chirping Smoke Detector, Late Saturday Night. It is a sound from the seventh circle of hell. The sharp, insistent, high-pitched CHIRP of a dying smoke detector battery. It is the universe's way of telling you, at three in the morning, that you have failed to prepare. It is a moment that calls for a specific and increasingly rare tool: the humble, blocky, 9-volt battery. This strange, rectangular power source is a relic from another time, yet it persists, the stubborn, beating heart of our most critical and our most bizarre devices. It powers the smoke alarm that saves your life, and it powers the vintage fuzz pedal that makes your guitar sound like a dying woolly mammoth. You need to have them on hand. You need a stockpile. Enter the Amazon Basics 9V. This is not the high-priced, celebrity-endorsed battery you see advertised during the Super Bowl. This is the people's battery. The pragmatist's choice. A simple, no-nonsense power brick that delivers on the one thing that truly matters: incredible, undeniable value. Let's be honest. In a head-to-head, long-distance race, will it outlast its big-name competitors? Probably not. It might run out of steam a little sooner in a high-drain device. But that is missing the point entirely. The point is that for the price of two or three of the "premium" batteries, you can have a whole damn arsenal of these things sitting in your drawer. You are not buying a single marathon runner; you are buying a fresh team of sprinters, ready to be tagged in at a moment's notice. And they will be ready. This is the second, and most crucial, part of the bargain. These batteries don't die in the drawer. They don't leak a foul, corrosive bile all over your other junk. They hold their charge with a grim, respectable tenacity. They sit there, for years if need be, patiently waiting for the call to action. Whether it's for the life-saving chirp of the smoke detector or the soul-stirring crunch of a guitar pedal, they are ready to serve. For the sheer, overwhelming value proposition, these cannot be beat. They are reliable, they are affordable, and they allow you to maintain a healthy supply of a crucial power source without taking out a second mortgage. They are the perfect, five-star solution for the well-prepared and the perpetually paranoid. A solid, working-class hero in a world of overpriced superstars.
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Reviewed in the United States on June 22, 2025 by iamoverrated
Size: 8-Pack
So far so good, they seem to work as well as the brand name ones. I have tried Amazon basics before and have been impressed with the quality, and these will go on my list of repeat purchases.
Reviewed in the United States on December 16, 2025 by Dave
Size: 8-Pack
I purchased the Amazon Basics 8-Pack 9V Batteries, and they’ve been excellent. The quality is solid—each battery delivers consistent power and lasts a long time in my devices. They’re perfect for smoke detectors, toys, and other electronics that need dependable energy. The best part is the value: you get eight batteries at a very reasonable price without sacrificing performance. They’re well-packaged and easy to store, making them a smart choice for keeping backups on hand. If you’re looking for affordable, reliable 9V batteries, this pack is a great buy. Highly recommend!
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Reviewed in the United States on November 19, 2025 by Jesse V
Size: 8-Pack
These Amazon Basics 9V batteries are exactly what I needed for smoke detectors, remotes, and other household devices. They have a long shelf life (5 years), so I feel confident storing them for emergencies. The performance has been consistent, and they hold their charge well, even under frequent use. The pack of 8 is a great value, and while the packaging may vary, the quality remains the same. For anyone looking for affordable, dependable 9V batteries, this pack is a solid choice.
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Reviewed in the United States on November 9, 2025 by Josh H
Size: 8-Pack
Reliable Power for Everyday Essentials These Amazon Basics 9V alkaline batteries are about as straightforward and dependable as it gets. I picked up the 8-pack mainly for smoke detectors and a couple of handheld meters, and they’ve worked exactly as expected. The packaging is simple and easy to open, which is nice when you’re swapping out a bunch of batteries at once. Performance-wise, they have delivered steady, consistent power with no hiccups so far. The 5-year shelf life is also reassuring—I can store extras in a drawer and know they’ll still be good when I need them down the line. Price is another strong point; compared to name brands, these offer solid value without feeling “cheap.” Things to keep in mind: these are standard alkaline batteries, not rechargeable, so they’re best suited for devices that need long-lasting, occasional power (smoke alarms, clocks, remotes, toys). For high-drain or constantly used electronics, rechargeable options might be more cost-effective over time. Bottom line: Affordable, reliable, and long-lasting—exactly what I want from a bulk pack of 9V batteries. Perfect for keeping smoke detectors and essential devices ready without overpaying.
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Reviewed in the United States on August 26, 2025 by Rich Reviews
Size: 8-Pack
Amazon batteries are the best for longevity and quality. They work well and I have the best price.
Reviewed in the United States on December 14, 2025 by The Cross Cut
Size: 8-Pack
When I buy 9 volt batteries or any batteries for that matter, I trust they’ll work. I trust they’re made with the same chemical properties and they’re the same size as alI the others. I don’t keep track of how long they work, just that they do. And these work as good as any, at a very good price. They last for a year in our co2/smoke detectors just like the more expensive ones so, why not go with these.
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Reviewed in the United States on December 21, 2025 by Paul R. F