Best Batteries For Smoke Detectors (2022): Reviews & Comparison

Nothing is more important than having functioning smoke detectors when it comes to keeping your home safe and secure. These devices are vital for detecting fires and other emergencies, alerting you and your family so that you can take action quickly and avoid any serious harm. Choosing the best batteries for smoke detector is critical in ensuring you get maximum protection.

However, with so many different options on the market, it can be hard to know which one is right for your home or apartment. In this guide, we will look at some of the best batteries available today, as well as discuss why they are so important to keep your family safe, and help you understand what to look for in a quality smoke alarm battery.

Energizer EN22 Alkaline 9 Volt Battery

Looking for a dependable 9-volt battery? Look no further than the EN22 Alkaline 9 Volt Battery from Energizer. This battery is perfect for powering battery-operated smoke alarms, and it can also be used for wireless microphones, guitar pedals, radios, security back-up systems, and more. With its long-lasting power and economical price tag, the EN22 Alkaline 9 Volt Battery is a great choice for heavily used, high-current-drain devices.

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Which are the best batteries for smoke detectors?

Batteries are a vital component of smoke detectors. Choosing the right type of battery is important to ensure that your smoke detector is effective as well as long-lasting.

There are many different types of batteries available on the market, so it is important to know which one is best for your needs. The most common type of battery used in smoke detectors is the 9-volt battery. This type of battery is typically used in homes and businesses.

To help you narrow down the choices, here's a compiled list of the best batteries for smoke detectors that use 9-volt batteries.

1. Energizer EN22 Alkaline 9 Volt Batteries

Energizer is a popular brand of batteries that have been trusted for years by consumers around the world. The Energizer EN22 Alkaline, 9 Volt batteries are an excellent choice for anyone looking for reliable, long-lasting power for their smoke detector. These batteries provide powerful performance and dependable operation. These are affordably priced and are available in most retail outlets.

2. EVEREADY 1222 9V Heavy-Duty Battery

If you're looking for a high-quality battery that can provide the power you need for your smoke detector, the EVEREADY 1222 9V heavy-duty batteries are an excellent choice. These batteries offer long-lasting performance and provide reliable operation, making them ideal for use in smoke detectors. It offers longevity and value for money, making it the perfect option to buy in bulk.

EVEREADY 1222 9V Heavy-Duty Battery

The EVEREADY 1222 9V Heavy-Duty Battery is another excellent choice for a smoke detector battery. These batteries are designed for long-lasting power and dependable performance. These batteries are also affordably priced and are widely available.

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3. Energizer LA522SBP 9V Lithium Batteries

The Energizer LA522SBP 9V lithium battery is designed for use in smoke detectors and other devices requiring a long shelf life. The LA522SBP features the highest quality and longest-lasting performance. It's also used in medical devices, high-tech alarm systems, and more. With a 10 year shelf life and wide operating range, this battery will power your device reliably for years to come.

Energizer LA522SBP 9V Lithium Battery

Another great option for those looking for the best batteries for smoke detectors is the Energizer LA522SBP 9V lithium batteries. These powerful and long-lasting batteries are ideal for use in homes and businesses, as they provide superior performance and reliable operation. They are lightweight, yet durable, making them a great choice to power your battery-operated smoke detector.

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These are just a few of the best batteries for use in smoke detectors. When shopping for a battery to power your smoke detector, it's important to consider not just cost but also performance and longevity. By doing your research and choosing the right battery, you can rest assured that your smoke detector will continue to operate effectively and reliably for years to come.

How long do 9V lithium batteries last in smoke detectors?

9V lithium batteries in smoke detectors typically last 3-5 years. This is just an estimate, though, as the battery's life depends on how often the detector is triggered and how long it takes for the detector to return to its normal state.

For example, if the detector is regularly triggered, the battery will not last as long as if it's only triggered once or twice a year. And if it takes the detector a long time to return to its normal state (e.g., because it's constantly beeping), the battery will drain more quickly.

When it comes to choosing the best batteries for smoke detectors, there are several factors that you should take into consideration.

  • Firstly, you will want to consider what type of battery your smoke detector uses. Most modern smoke detectors use either 9V lithium batteries or AA alkaline batteries, so these are typically your best options when it comes to purchasing replacement batteries.
  • Another thing to consider is the quality of the battery itself. Lower-quality batteries typically have a shorter lifespan, so you will want to opt for higher-quality brands if you are looking for long-lasting battery power in your smoke detectors.
  • Additionally, you should always check the manufacturer's recommended battery life for your specific smoke detector model to ensure that you are choosing a battery with the appropriate lifespan.
  • Finally, you will want to keep in mind the cost of batteries when making your purchase. While higher-quality batteries may cost more upfront, they will typically last longer and save you money in the long run, as you won't have to replace them as often.

How often do you change the battery in the smoke detector?

It's important to keep your smoke detectors in working order, and that includes changing the batteries regularly. Depending on the type of detector you have, you may need to change the battery once a year or every six months. This way, you can be sure that the device is always working and will be able to alert you in the event of a fire.

Can I use alkaline batteries in a smoke detector?

The answer depends on the type of smoke detector and the brand of battery. Some models won’t work with alkaline batteries, while others will only operate for a few months or years before they need to be replaced.

The most important thing to look for when choosing batteries for your smoke detector is whether or not the batteries are compatible with your specific model. You can usually find this information in the product’s manual or on the manufacturer’s website. If you can’t find this information, it’s best to err on the side of caution and use the type of battery that’s recommended by the manufacturer.

Once you’ve determined which type of battery is compatible with your smoke detector, you can start comparing different brands and models. Generally speaking, alkaline batteries are a good choice for most smoke detectors. They tend to be cheaper than other types of batteries, and they can provide long-lasting power. However, some brands of alkaline batteries may not be as reliable or as powerful as others so it is ideal to do some research before making your final decision.


Finding the best batteries for your smoke detector is important to ensure the safety of your home. With so many different types and brands of batteries on the market, it can be difficult to know which ones are the best. However, by taking into account the factors discussed in this article, you can be sure to find the best batteries for your needs.

About the author, Phil Borges

Phil Borges is a battery aficionado. He's written extensively about batteries, and he loves nothing more than discussing the latest innovations in the industry. He has a deep understanding of how batteries work, and he's always on the lookout for new ways to improve their performance.