Best 9V Battery For Smoke Detector

62 Products Considered
56 Hours of Research
10 Experts Interviewed
783 Reviews Analyzed

I’m sure you’ll agree with me when I say this:

Buying the best 9v battery for smoke detector can be a challenge.

It can seem like there are hundreds or even thousands of home improvement products to choose from but there’s nothing that fits your specific needs. Oh, we know that feeling.

Best 9V Battery For Smoke Detector
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It sucks when you’ve got a budget to fit in and you want to find something that would be the best bang for the buck, but it’s impossible to narrow down the choices without spending hours (sometimes tens of hours) on research and reading the reviews on the best 9v battery.

We decided that it’s time for robots to do the hard work. Here’s how:

  1. With the help of Artificial Intelligence, we analyzed hundreds of thousands (no kidding) of reviews from verified owners on Amazon and reputable expert sources like Consumer Reports, The Wirecutter, PCmag, and many others.
  2. Every product got its own rating in each category (like “best something for smoke detector”).
  3. We compiled lists of the best products in every category and created lists like the one you can see below
  4. We shared them with the public, so you guys could make informed decisions and save time.

For this article about the Best 9V Battery For Smoke Detector we reviewed and evaluated more than 180+ 9v batterys. The AI (artificial) selected only those that received the top award. Only winners are listed below. You can see the highest overall rating of each item and a comprehensive breakdown of its characteristics.

Best 9V Battery For Smoke Detector – Comparison Table

9v battery Reviews and Buying Guide

With more choices than ever, it can be hard to find the 9v battery that’s right for you. And it can be frustrating to shop for the best 9v battery for smoke detector, hoping to find the one that can help you. But don’t worry. With our tools and guides, we can help.

We provide consumers with the information they need to get the most out of their new purchases. We’ve discussed our favorite deals and services, and sorted out the strengths and weaknesses of each variation. We’ve even pinpointed what makes a good 9v battery, helping you identify and avoid the pitfalls of price gimmicks and overpriced home improvement brands.

4,778 Reviews
  • Hardwired alarm includes battery backup for power outages
  • Photoelectric and ionization sensors provide comprehensive fire detection
  • A single button makes alarm easy to test monthly or silence during a false alarm.Temperature Range:40°F (4°C) to 100°F (38°C)
  • Two latching features help indicate a low battery or the originating alarm in a system
  • Optipath 360 patented technology provides 360 degrees of access to the smoke alarm. Emits T3 Pattern
  • Equipped with a dual photoelectric and ionization smoke sensor to quickly detect both fast burning and smoldering fires
472 Reviews
  • 12 9-volt batteries in recloseable storage pack
  • Performs better than the competition in high-drain and super high-drain devices
  • Long Shelf life; holds power and will not vent or leak when stored in a cool, dry place
  • Contains no mercury or cadmium; safe for the home and better for the environment
  • Trust ACDelco for all your battery needs: alkaline batteries, lithium coin cell batteries, rechargeable batteries, car batteries, and more
456 Reviews
  • Power Seal Technology extends across the full MAXÂ product line, so you can be confident you'll
  • Shelf life for MAXÂ varies by product. Our AA, AAA, C, and D batteries have a shelf life of 10
61 Reviews
  • 【Higher Capacity】-- The 9V rechargeable Li-ion battery with real capacity of 800mAh,
  • 【Battery Features】 --Li-ion battery is safe, non-toxic, Without memory effect, Low self-discharge. Cycle life 300+ times. Battery features built-in protection circuit to prevent external short-circuit, over-charge, over-discharge
  • 【Easy USB Charger】 --The recommend charger powered by 5V-1A ~ 5v-2.4A USB input, easy to connect with cell phone charger adapter, power bank USB port, car charger adapter.
  • 【Small size, Fast, Charger】 --max 10w output, only need 2.5hrs to fully charge 3 batteries one time. The charger with low heating loss;
  • 【Package】 --4* 9V Batteries; 1* User Manual
81 Reviews
  • Recharge 9V battery can be charged 100's times
  • 8.4V NiMH 175mAh
250 Reviews
  • Battery Type: 9V 800mAh rechargeable li-ion battery with 6 pack, higher capacity than ordinary 9V battery, more affordable and environment friendly.
  • Safety and Performance: Keenstone 9V Li-ion battery is non-toxic, without memory effect and environmental friendly. Recycle up to 500 times.
  • Smart Battery Charger: 9V Li-ion battery charger based on 5V/1~2A USB DC input, easy and convenient to connect battery charger with power bank or adapter that about 1~2A.
  • Fast battery charger: max 800mA output, only need 3h to fully charge 3 batteries one time. Easy to read each battery charging state with inserted LED lights for each independent channel.
  • Package Included: 6*Keenstone 9V Li-ion Battery Rechargeable; 1*Keenstone 3-slot Charger ; 1*USB Charging Cable; 1*Manuel
380 Reviews
  • 2-pack of Energizer Ultimate Lithium 9V batteries
  • Our Longest-Lasting 9V Battery
  • Powers your most critical devices—ideal for your smart home devices, outdoor surveillance systems, digital cameras, and handheld games
  • Holds power up to 10 years in storage for trustworthy backup energy, so you’re always prepared
  • Performs in extreme temperatures, from -40F to 140° F, for year-round, indoor and outdoor use
640 Reviews
  • Offers the longest lasting power source.
  • No mercury added Special disposal not required.
  • Operate well in temperature extremes -30C to 55C
  • Excellent shelf life alkaline cells are ready for use after 7 years of storage
  • Designed to protect against damaging leaks for up to two years after fully used
  • Designed for long-lasting performance in all device applications.
430 Reviews
  • Battery: 4 pack 6F22 9V 600mAh lithium-ion rechargeable battery
  • No memory effect,improved low self discharge makes it still maintain 75% of capacity after 3 year of non-use
  • Batteries can be recharged up to 1200 times, high quality with professional care
  • Convenient operation without memory effect?can be charged anytime
  • Recommended for smoke alarms, professional audio and medical devices
209 Reviews
  • 600mAh Li-ion rechargeable 9V batteries(Pack of 4).
  • No memory effect & Low-self discharge,holding capacity effectively,not have to change every day.
  • Bonai 9V Rechargeable Batteries with great quality,1200 cycle ,Even if it is charged every day,it can be used for more than 3 years.
  • Bonai 9V batteries rechargeable are perfect for smoke alarms, metal detector, professional audio, toys, guitar, medical devices and more.
  • BONAI - We are a professional battery manufacturer with 10 years of experience and we have been doing our best to meet customer needs. --【Support After Sales】1 year warranty, If you have any questions,submit a claim via email,we will reply you within 24 hours.
2,497 Reviews
  • Industrial use
  • Duracell porcello
  • Long lasting alkaline power cells
1,048 Reviews
  • Up to 10 year storage life
  • Leak resistant construction
  • Weigh 1/4 less than standard alkaline
253 Reviews
  • Alerts your smartphone if alarm sounds
  • No more 3 AM chirps. Notifies you before battery runs out
  • Share alerts with friends, family and emergency contacts


If you buy a quality, top of the line 9v battery from a reliable brand and pay top dollar for it, you can be assured that it will perform to your liking.

Some price-conscious users seek out the cheapest products in the market to save money. These users want to make sure they get the best value at the lowest price without being scammed.

Other users simply want to get the best products and don’t care much about price.

We rated our top 9v battery list based on the quality first and only then price. So if you’re not sure whether you can afford an item, just click “Buy on Amazon” and check the price.

Last update on 2020-01-11 at 13:32 / Affiliate links / Images from Amazon Product Advertising API

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