Best 12V Battery Review – 12 Volt Batteries for Electric Vehicles, Toys, Alarms, Watches, Tools, Electronics & More

Batteries are some of the most useful electrical devices in our modern world. They power our laptops, our smartphones, our power tools, our flashlights and much, much more. Unlike your standard household batteries, such as AA and AAA, which are pretty much the same in terms of type and usage, there are many types of 12-volt batteries for different uses which means they are not all interchangeable.

For example, there are 12v car batteries, 12v batteries for running power tools, miniature 12v batteries, and 12 batteries made for ride on toys, wheelchairs, motorcycles and lawn mowers, just to name a few. To help you handle your power needs more easily, we picked a mix of types from some of the best battery brands out there. Check these out and choose the ones you need the most!

Please note that the batteries we have featured are what we would consider “universal” 12-volt batteries, as compared to ones that are designed for powering products made by a specific brand, such as Craftsman, Makita, Black +Decker, Milwaukee, or Dewalt 12V replacement batteries. If you are looking for those, we have some recommendations for you right before our Top 5 picks reviews.

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Good for
Our Top Choice
Mighty Max 12V Fire Alarm Battery
Mighty Max Battery specializes in rechargeable batteries for a wide variety of devices and electrical tools.
One-year warranty. Specially designed to prevent leaking. Resists shocks and vibration.
Minor reliability problems, but these are rare and the battery comes with a warranty period of one year.
Rechargeable, sealed lead acid
1 battery
Electric vehicles, toys, UPS
7.1 x 3 x 6.5 inches
1 year
Best Value
Duracell MN27 12V Alkaline Battery
Duracell is a renowned brand that specializes in power solutions, jump starters, battery chargers and jumper cables.
Available in packs of 1 or 4 batteries. Super affordable. Good for multiple appliances.
Some batteries didn’t come in original package, but such instances are very rare.
Alkaline batteries
Packs of 1 or 4 batteries
Toys, flashlights, remotes
1.1 x 0.3 inches
Not specified
Universal Power Group 12V SLA Battery
Universal Power Group makes rechargeable batteries for multiple electronic goods from various industries such as automotive, household tools, powersports, home improvement and more.
High amperage – 35 amps per hour. One-year warranty. Features small carrying handle. Two batteries in a pack.
Minor reliability issues, but these models come with a warranty period of one year.
Rechargeable, sealed lead acid
2 batteries
Electric vehicle, household tools
7.7 x 5.1 x 6.8 inches
1 year
ExpertPower 12V Home Alarm Battery
ExpertPower specializes in power banks and rechargeable batteries for various types of electrical goods.
One-year warranty. Protected against spillage. Long shelf life. Compact design.
Some batteries arrived damaged, but they were replaced by manufacturer.
Rechargeable, sealed lead acid
Packs of 1, 2, 4 or 12 batteries
Electric scooter, block rockers
3.5 x 2.8 x 4 inches
1 year
Energizer A23 12V Alkaline Battery
Energizer manufactures affordable power solutions and lighting devices.
Available in different pack sizes. Up to 10 years of shelf life. Protected against leaks.
Some users report a few batteries were DOA, but they were replaced.
Alkaline batteries
Packs of 2, 4 or 12 batteries
Toys, flashlights, remotes
3.4 x 1.8 x 0.4 inches
Not specified

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What is the Best 12V Battery?

When picking the right 12V battery, you need to know exactly how you are going to use it and for what devices. This is because there are many different kinds of 12 volt batteries. Before we get to our featured reviews, let's take a moment to discuss a specific type.

Need a 12 V Lithium Ion Battery Pack for a Power Tool?

For our top picks, we focused on 12V batteries which are primarily used for things such as electric vehicles, lawn equipment, motorcycles, or alarms, as well as miniature 12V batteries for electronics. In most cases, as long as you get the right type for your need, they are interchangeable.

However, there is another type of 12-volt battery – the lithium 12v battery which attaches directly to a device.

These are the kinds of batteries used for things such as electric power tools and lawn equipment. In most cases, a specific brand will design their own 12V battery pack. While they may be interchangeable with different products within their line, typically they cannot be used with products made by other companies. Because these batteries are rechargeable, they also require a charger that is designed specifically for them.

Most power tools come with the battery pack that is required, but many people like to have more than one. This allows you to keep working while one battery is charging. In addition, as years go by, even rechargeable batteries need to be replaced because they don’t hold the charge as long as they used to. For those of you who are looking for this type of battery pack, the following is a list of some of the most popular brands, featuring both batteries and 12-volt battery chargers. We’ve also included alternate options that may be available if you are looking for something less expensive.

DeWalt 12v Battery Replacement - View all options on Amazon

There are also brands such as Elefly and First Power who make replacement 12 batteries and chargers for Dewalt products.

Milwaukee 12v Battery Replacement - View all options on Amazon

Black and Decker 12v Battery Replacement - View all options on Amazon

Note: Black + Decker has two different styles of 12v batteries for different tools – one is flat (slide style) and the other is tall/vertical (sometimes called a “pod style battery”). Make sure you get the right one for your device.

Makita 12v Battery Replacement - View all options on Amazon

Note: Makita has two different styles of 12v batteries for different tools – one is flat and the other is vertical. Make sure you get the right one for your device.

Our Featured 12 Volt Battery Reviews

Our Top Choice
The 12V Rechargeable Replacement Battery from Mighty Max is a spillproof battery designed to resist shocks and vibrations. It can perform well in extreme temperature conditions too! This model can be used for different applications, but if you want a 12V battery specifically for your garage door opener, check out the 12V 5AH Chamberlain Battery from the same brand.

Mighty Max Battery ML18-12 - 12V 18AH CB19-12 SLA AGM Rechargeable Deep Cycle 12 Replacement Battery

Just as the name implies, Mighty Max Battery is a brand that specializes in battery manufacturing. Many of the batteries crafted by this brand are bestsellers at the moment of this writing, and they are useful for various types of devices such as power tools, vehicles, uninterruptible power sources, alarm systems and so on. The 12V Rechargeable Deep Cycle Replacement Battery from Mighty Max is a relatively compact and lightweight battery that can be used for a plethora of applications, such as powering wheelchairs, alarm systems, large toys and more. It specifically uses a calcium-alloy grid to ensure high performance in both low and high temperature conditions. This model is very versatile, as it can be mounted in different positions, and it features a nut and bolt terminal. The manufacturer backs up this product with a warranty period of one year, and you also benefit from a 30-day return policy, which is very helpful to have, just in case. If you want to be sure that you are not going to run out of power in the case of a blackout, this battery might be suitable for you!
Best Value
The 12 Volt Alkaline Battery from Duracell can be used for a plethora of devices, such as watches, remotes or other electronic appliances, and you can have it in packs of one or four batteries. If you require even more batteries, check out the Duralock package from Duracell, which contains 6 12V batteries!

Duracell 12 Volt Alkaline Battery – Good for Watch, Electronic, Keyless Entry Device

You’ve definitely heard of Duracell before; this brand makes high-quality batteries and power inverters which offer long service life. This company provides great power solutions at affordable prices, and it also manufactures jumper cables and battery chargers. The 12 Volt Alkaline Battery from Duracell might be exactly what you are looking for if your devices have run out of power. This product is sold in packs of one or four, and you can use these 12V batteries to power dead flashlights, remotes, calculators, motherboards and pretty much any electronic gadget which accepts this battery format. Some people use them for heart rate monitors, laser pointers and other equipment, so the possibilities are endless! There isn’t much to say about these 12V batteries other than they have a long shelf life and are made without using mercury. Whether you go for one or four batteries, the price of this product is more than reasonable, and as you probably already know, Duracell is known for making reliable batteries, so chances are that you'll be very happy with these 12V batteries in the long run.
The 12V Universal Battery from Universal Power Group comes with a warranty period of one year, and they can be used for numerous applications thanks to their immense power storage. The amperage of this model is 35 amps per hour, but if you don’t need that much, check out the UB1250 Sealed Lead Acid Batteries, which have an amperage of 5 amps per hour.

Universal Power Group 12V Universal Battery  - 35AH Replacement Battery (75Ah also available)

Universal Power Group specializes in providing high-quality batteries for a wide variety of electronic goods. It makes sealed lead acid, alkaline as well as lithium and nimh batteries at affordable prices, and these products can be used for uninterruptible power sources, power tools, vehicles of different sizes, security and audio equipment and more. Universal Power Group also makes excellent chargers that go well with its broad range of batteries. The 12V Universal Battery from Universal Power Group comes in a pack of two batteries, and they probably are exactly what you need if your garage door opener has run out of power or you need to bring an electric wheelchair or scooter back to life. This model is basically a sealed lead acid battery, which comes in a protective enclosed case and offers a warranty period of one year. You can use it for most electronic equipment, such as surveillance devices and home alarm systems, UPS systems, solar panel systems and more. What makes this battery special is its amperage – 35 amps per hour! That’s really impressive, given the fact that most 12V batteries deliver approximately 5 or 7 amps per hour. As a result, you can continuously use power-intensive gadgets and appliances for many hours before the battery runs out. The manufacturer even installed a simple plastic handle on top of each battery, so you can carry them easier while on the go!
The 12V Home Alarm Battery from ExpertPower can be bought in bulk, requires no maintenance and is one of the safest and most reliable 12V batteries money can buy today. This battery provides 5 amps per hour; if you require a more powerful one, go for the Rechargeable Lead Acid Battery, which offers 7 amps per hour.

ExpertPower 12V 5Ah Home Alarm Battery with F1 Terminals – Non-Spillable, Sealed Lead Acid Battery

ExpertPower is a brand founded back in 1987, and it specializes in batteries and power solutions. This company manufactures battery chargers, sealed lead acid batteries and accessories for them. The 12V 5Ah Home Alarm Battery with F1 Terminals from ExpertPower can be bought in different options such as 1, 2, 4 or 12 batteries per pack. This model comes with F1 terminals and provides a long service life and a high discharge rate, making it one of the most practical batteries on the market. The battery is advertised to work for home alarm systems, but in fact it can be used for so many other electrical goods, such as electric scooters, UPS systems, PA systems, surveillance systems, garage door openers and many others. The manufacturer also offers a warranty period of one year for this product and envelops each 12V battery in a hardened ABS plastic case to protect against leakage. Try it out and you'll see it will rise to your expectations!
The Zero Mercury Alkaline Batteries from Energizer are available in packs of 2, 4 or 12 batteries, and they can hold their power for up to 10 years! By the way, in case you didn't know it, Energizer also makes 12V Motorcycle batteries too!

Energizer A23 Miniature Alkaline 12V Battery – Zero Mercury, Long Shelf Life, Available in Packs of 2, 4 or 12 Batteries

The last product on our list comes from Energizer, a brand that makes a plethora of high-quality standard batteries, lithium batteries and even battery chargers. You might be happy to find out that this brand also makes flashlights, lanterns and headlamps at reasonable prices. The Zero Mercury Alkaline Batteries from Energizer are some of the safest and most popular alkaline batteries currently available on the market. These items incorporate state-of-the-art technology which basically prevents leaks for up to two years after they have been depleted. The manufacturer also states that its 12V alkaline batteries can have a shelf life of up to 10 years, so don’t be afraid to store them in bulk for emergencies! This particular model we are reviewing is available in packs of 2, 4 or 12 batteries, and it can be used for numerous applications, from toys and remotes to garage door openers, UPS systems and high-power flashlights. Thanks to their low price, now you can buy multiple ones for your gadgets and rest assured that you're never going to run out of power!

How Do I Choose the Best 12V Battery?

Can you imagine how life would be without batteries? There are numerous variations of them, such as 3.7V batteries, 9V batteries, AA batteries, AAA batteries, you name it, and all of them have their practical uses in our modern world. You are probably reading this article from your laptop or tablet, which is, obviously, powered by a rechargeable battery. Even electric cars use batteries (and a great deal of them) to move you from point A to point B, so the importance of such accessories cannot be stressed enough. One of the most popular types of battery is the 12V battery, which is usually used for remotes, flashlights, even to jump start your car. They are more powerful than other types of batteries and come at very low prices, so buying in bulk seems the right thing to do. We have analyzed the market extensively and found out more about these batteries to help you pick the ones you need. Keep reading this guide to find out everything you need to know about 12V batteries.

How to Load Test a 12v Car Battery

How to tell if your car battery is good using a multimeter and a digital battery load tester. | Courtesy of 4DIYers

We are quite sure this is not the first time you are buying batteries, and you know that they are quite affordable, however, it is also important to know how many units you are getting in the package, and what can you do with your 12V battery. For example, you can buy 12V batteries between about $5 for a pack of four, and $25-$30 for a single rechargeable 12V battery that can be used for powering alarm systems or UPS systems. In some cases, batteries that can jump start your car and even recharge your phone can cost around $300. Obviously, you need to know very well what types of batteries you require for your devices, and then set the budget. Be advised that there are also many cheap 12V batteries, usually costing less than a fiver for a pack of eight, but these products should be avoided, as they are not reliable.
Let's go ahead and find out more about 12V batteries, as they are available in several different types and can have various characteristics.
  • Type - Some batteries are rechargeable, others are not, so if you are using certain gadgets extensively such as a flashlight, you might want to spend a little more and go for a rechargeable model.
  • Uses - In most cases, small 12V batteries are used to power remotes and kids' toys, while larger ones can be used for UPS systems and home alarms. The latter usually have higher amperage, and that’s why they are suitable for electronics which require more power.
  • Quantity - Some manufacturers sell packs of two, four, six, eight, or up to 24 batteries per pack, so you should know what you are getting for your money.
In some cases, certain batteries are specially designed to perform other tasks, not just powering your devices. For example, some of them incorporate voltmeters and can be used to power your smartphone. Others might have a built-in flashlight, which is useful in various situations. At the end of the day, the most important numbers are the voltage of the battery (12 in our case) and the amperage, which is usually stated as Ah (Ampers per hour) or just Amps. The higher the amperage, the more powerful the battery is, and you can use it to power up multiple electronics, maybe even your vehicle.
Construction and Design
Most 12V batteries are built using lead acid, and that’s why you shouldn’t open them or let small kids play with them, as this substance is rather dangerous. They usually come with F1 terminals, which allow you to connect them to a wide variety of devices, including computers, motherboards, electric scooters, lawn mowers and many others. If you want 12V batteries with a higher amperage, you should expect them to be a little bulkier, probably around two to three pounds, because they contain more acid to produce more power. However, they remain portable and easy to carry around, so if you go camping a lot, you can leave one in your RV to be used for emergencies. 12V batteries are not particularly striking to look at, and they cannot be used for decorative purposes, so there isn’t much information you need to know about their construction and design. We are also sure you don’t want a complex physics lesson on how they work, as that can be quite boring for some, so as long as you know what you are going to use them for, you'll be fine.
Performance and Ease of Use
Before wrapping it up, we want to mention a word about safety to ensure you have more peace of mind. Lead acid batteries have been seriously upgraded in the last years, and today they are spill proof and rigorously sealed to prevent accidents, overheating, and so on. As long as you keep them away from heat sources, you should be able to use your 12V battery for a long period of time. Also, make sure you check out the warranty information, as some batteries, particularly those with higher amperage, are backed by warranty periods of one or two years.

Get the Best 12V Battery of 2023!

You will never run out of juice if you stock up on some of the best 12V batteries on the market, whether you are outdoors camping or indoors using the remote to find your favorite TV shows. By the way, it would be a good idea to buy in bulk to save some money and have more peace of mind in case of a power blackout!

Our Top Choice
Mighty Max 12V Fire Alarm Battery
Best Value
Duracell MN27 12V Alkaline Battery
Universal Power Group 12V SLA Battery
ExpertPower 12V Home Alarm Battery
Energizer A23 12V Alkaline Battery

12V Battery FAQs

What is the voltage 12V battery when fully charged?
FOn a full charge, a 12V battery’s voltage will read 12.9 volts. If we are talking about a 12 volt car batter, when the car is running it should read between 13.7 Volts and 14.7 Volts. In case you don’t have a multimeter and want to know whether the battery is fully charged, turn on the headlights. If the lights are dim, then the battery is running low.
How long will a 12V battery last with an inverter?
A 12V battery can last between 10 to 17 hours with an inverter. There’s a formula that one can use which will depend on watt load and the ampere-hour of the battery. Before you can know how long the battery will last, you will need to understand its size and type. Find out whether it’s a deep cycle or lead-acid battery.
How to charge a 12V battery without a charger?
While 12 volt batteries can be charged without a charger, you need to understand that this isn’t the best or safe way to charge a battery. However, if you are going to use this method, you need the following: protective eye wear, gloves, wire probes, and three lights. Ensure you have a power source or another 12V battery with a similar voltage. Connect the three lights between the battery and the power source. Connect the negative clip of the wire probe to the power source and complete the circuit by connecting the other to the battery. Do the same for the positives. With the circuit complete, power will start flowing.