The Best 9V Battery for the Gadgets in Your Home

Whether you’re powering children’s toys or smoke detectors and you need 2 batteries or 2 dozen, we’ve found top-quality 9V batteries to suit your needs.

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Smoke Detector Chirping The Battery Drawer is Open

Photo: istockphoto.com

Many tools, children’s toys, smoke detectors, carbon monoxide alarms, and other household gadgets rely on 9-volt (9V) batteries for power, which is why it’s so important to have a pack of reliable and long-lasting 9V batteries at the ready. Though you may think all batteries are basically the same and are just branded differently, there are a number of factors that set batteries from different manufacturers apart. Here’s what to know when shopping for the best 9V battery.

The first decision to be made when shopping for a 9V battery is whether lithium or alkaline batteries are more suited to your needs. Lithium batteries last longer and self-discharge slower than alkaline batteries. For this reason, they’re a good choice for items that aren’t used as frequently, since the battery won’t fully discharge between uses. However, lithium batteries are often more expensive than alkaline batteries. For household items that are used regularly, quality alkaline batteries will usually suffice. Their performance is comparable to that of lithium batteries, and they are less costly.

Another important decision to make before you go battery shopping is whether you want to invest in rechargeable batteries or just buy the disposable kind. Rechargeable batteries are more expensive at the outset, but you will end up saving money in the long run because they can be recharged and used again. Keep in mind, you won’t be able to use the tool or toy that the 9V battery powers while the battery recharges, which could take a few hours.

The last question battery shoppers must answer pertains to how many batteries they need. Do a quick survey around your home as to how many gadgets require 9V batteries, and purchase accordingly. Purchase more batteries than you need to power your 9V devices so you always have a few spare on hand. Also, remember that batteries expire, so consult the battery manufacturer’s literature about the brand’s shelf life to ensure you don’t purchase too many batteries. Most 9V batteries can last for at least 5 years when stored properly.

Our Top Picks

Below are the top picks for the best 9V batteries on the market. These selections include both lithium and alkaline batteries as well as both larger and smaller quantities of batteries. Whatever the number of batteries you need to power your household gear—and whichever type of battery you favor—there are terrific options here for your needs.

Best Overall

The Best 9V Battery Option: Energizer MAX 9V Batteries, Premium Alkaline
Photo: amazon.com

For those who need batteries to power their everyday gear, Energizer’s MAX 9V alkaline batteries are a terrific choice. They can be used in clocks, tools, children’s toys, remote controls, smoke detectors, and more. When in storage, Energizer MAX batteries can hold power for up to 5 years. They’re also designed to prevent leaks of corrosive materials in drawers or devices. This pack includes eight Energizer MAX alkaline 9V batteries.

Best Bang for the Buck

The Best 9V Battery Option: ACDelco 12-Count 9 Volt Batteries
Photo: amazon.com

ACDelco’s 9V batteries are sold by the dozen, which is convenient for shoppers who have a variety of tools, appliances, and gadgets around the home to power. If you don’t have use for 12 batteries right away, no worries—these batteries have a shelf life of up to 7 years. Another reason to consider ACDelco’s 9V batteries is that they are made without mercury or cadmium, both of which have been found detrimental to human health and the environment.

Best Alkaline

The Best 9V Battery Option: Duracell - CopperTop 9V Alkaline Batteries
Photo: amazon.com

Duracell’s CopperTop 9V batteries provide long-lasting power to a variety of tools, toys, and gadgets around the home. When used as directed, they’re guaranteed not to leak or cause damage to the devices in which they are used. They’re also guaranteed to last for 5 years in storage. Shoppers who are concerned about health and the environment will appreciate that Duracell batteries do not contain mercury.

Best Lithium

The Best 9V Battery Option:Tenergy 9V Lithium Batteries, 1200mah
Photo: amazon.com

Tenergy’s 9V lithium batteries have a low self-discharge that depletes just 2 percent of the power each year when the batteries are properly stored. This low rate of discharge allows these lithium batteries to last for 10 or more years in storage. Tenergy’s 9V batteries are UL and CE certified and can provide up to two and a half times the power that a standard 9V alkaline battery offers. Another advantage to purchasing these batteries is that they are slimmer and have rounded corners so they fit more easily in electronics’ battery bays. Because they can function in temperatures ranging from -40 to 140 degrees Fahrenheit, these lithium batteries are suitable for use in outdoor equipment.

Best Rechargeable

The Best 9V Battery Option: EBL 4-Pack 9V Batteries Li-ion 9 Volt Rechargeable
Photo: amazon.com

EBL’s four-pack of 9V rechargeable lithium-ion batteries are recommended for medical devices and smoke detectors, but they can also be used to power other household gadgets. A battery charger is included with the set and can charge one or two batteries at a time. These 9V batteries have a low self-discharge rate and will hold up to 75 percent of their initial power after 3 years in storage.

Best 2-Pack

The Best 9V Battery Option: Rayovac Fusion 9V Batteries, Premium Alkaline
Photo: amazon.com

For those who just need a 9V or two rather than a box of 12 batteries, this two-pack of Rayovac Fusion 9V alkaline batteries is a worthy choice. Rayovac’s most powerful 9V batteries are designed for devices that consume a lot of power, such as toys, wireless microphones, and smoke detectors. Unlike other batteries that may leak and cause a mess, Fusions feature a leak-proof design. When properly stored, they will hold their power for up to 5 years. These batteries are made in the USA.

Best Bulk Quantity

The Best 9V Battery Option: Energizer Max Alkaline 9 Volt, 24 Pack
Photo: amazon.com

Those looking for a large quantity of 9V batteries should consider this 24-pack of Energizer Max Alkaline batteries; buying them in bulk offers considerable cost savings. With a 5-year shelf life, there is no rush to use the entire pack right away. These 9V batteries come packaged in clear clamshells to help preserve and protect each battery. Energizer’s Power Seal Technology prevents leaks from occurring for up to 2 years after a battery has been fully discharged.