Best Batteries For Door Locks: Top 4 Picks!

best batteries for door locks

You don’t want any compromise when it comes to the security of your home. So, it is important to have a reliable battery on your electronic door lock. 

So, what are the best batteries for door locks? 

The Energizer Max Alkaline Battery is the best battery for door locks that will last for a long time. Duracell Coppertop Alkaline Battery is the overall best battery as it has some excellent features along with the brand reputation. For the best value for money, you can choose Rayovac Battery. Finally, if you are looking for an affordable option, Amazon Basics Battery is a good one. 

To know a detailed discussion about these batteries, keep reading!

Top 4 Batteries For Door Locks

After vast research and experiment, I have picked the 4 most reliable batteries to use in door locks. In the following table, I have mentioned those batteries for door locks.

Batteries For Door LocksUnique Feature Price 
Energizer Max Alkaline BatteryBest For Long-Term UseCheck Latest Price
Duracell Coppertop Alkaline BatteryOverall Best Battery for Door LocksCheck Latest Price
Rayovac Alkaline BatteryBest Value For MoneyCheck Latest Price
Amazon Basics Alkaline BatteryMost Affordable Battery For Door LocksCheck Latest Price

In this section, we will review the batteries, listing their advantages and disadvantages in detail.

Energizer Max Alkaline Battery:

Best For Long-Term Use:


  • Leak-proof for up to 2 years
  • Provides high-performance 
  • Long-shelf life
  • Widely available nationwide


  • No leak-proof guarantee after 2 years of use. 
  • The battery will keep getting weak over time. 

Experience long-lasting power and reliability with Energizer Max Alkaline Battery which is perfect for long-term use. With a leak-proof guarantee and high-performance capabilities, it ensures a steady power output. Energizer Max is trusted for door locks with its wide availability and boasting shelf life.

One of the best features of the Energizer Max battery is there is almost no leakage. When you put batteries on your smart lock, one of the primary concerns is battery leakage. The battery leakage can damage your lock. Energizer provides no leaks guarantee for up to 2 years of full use which is a big relief.

This is a popular battery brand and you will find it in almost all the shops near you. However, ordering from Amazon would be best as you can take AA and AAA battery combo. Also, the 10 years of shelf life makes it easier to stockpile them.

Keeping the extra battery is important because a battery can be dead anytime. And you don’t want to get stuck at home just because you can’t lock the door due to the lack of batteries. 

Energizer batteries have the ability to maintain a steady power output throughout their lifespan.

Also, this battery claims to be the first battery brand in the world with zero mercury content. So, it is safe for your body as well as the environment. If you are using a smart lock, you can pair it up with a good smart lock home assistant

However, there are certain drawbacks you may face with this particular battery. After using it for 2 years on your door lock, there’s a chance of leaking. 

Your lock’s user manual has a mentioned interval for possible battery replacement time. So, if your door lock consumes less power and the battery lasts more than 2 years, replace the battery after that. 

Another drawback is, as a non-rechargeable alkaline battery, it will get weaker as time passes. 

Duracell Coppertop Alkaline Battery

Overall Best Battery for Door Locks:


  • Longer shelf life
  • Reliable brand name
  • Wide availability 
  • Constant and reliable performance 
  • Power Boost™ technology makes it long-lasting


  • Leaks only after using it for 1 year continuously. 
  • Expensive 

Here comes one of the leading brands in the battery industry. The popularity of Duracell is a solid certification of its performance. So, there’s nothing new to say. The overall best battery for door locks. With its longer shelf life, trusted brand name, and constant performance, Duracell is a popular choice.

Duracell is even more well-known compared to the Energizer batteries. It also has more market share than Energizer. 

Duracell is also well known for lasting longer than any other battery on the market. Their patented Power Boost™ technology makes sure of that. This technology is not available in Energizer or any other battery brands.

The Duracell Coppertop has 12 years of shelf-life which is higher than the Energizer batteries. You can buy them in bulk and never have to suffer from running out of batteries. 

Duracell is one of the best batteries for your door lock due to its power reliability. It will provide constant power for a smooth lock operation. 

However, there is one major drawback of Duracell that makes it less reliable than Energizer. It starts leaking after only 1 year of continuous use. In some door locks, the battery runs for more than 1 year. In that case, even if your door lock doesn’t need a new battery, you have to replace it after 1 year.

Usually, smart door locks drain more battery power than regular electronic door locks. And the smart door locks are more secure as well. But if you have a regular electronic door lock, the battery may last more than 1 year. And then you should replace the battery and give a regular checkup. 

Here’s a tip. After using 1 year in your doorbell, don’t throw it away. You can use the battery in devices that don’t have continuous use, such as toys. And later you can remove the batteries so it doesn’t leak on the devices. 

Here’s an interesting video on the leakage test of Duracell and Energizer alkaline batteries. 

Leak Testing Duracell & Energizer Alkaline Battery Seals! EXPERIMENT

Rayovac Alkaline Battery

Best Value For Money:


  • Budget-friendly
  • Double-tested for power reliability
  • Solely manufactured in the USA
  • Long shelf life


  • Starts to leak unexpectedly. 
  • May not get reliable power as Energizer and Duracell

Get the best value for your money with Rayovac Alkaline Battery. It is an excellent choice for your smart locks with a budget-friendly price tag. When you compare it to the leading brands, it provides almost similar power with less cost. It is made solely in the USA, it’s a trusted option for your door lock needs.

The Rayovac claims to provide the same power as the Duracell Coppertop battery but at a cheaper price. Just like Energizer alkaline batteries, Rayovac batteries also have a shelf life of 10 years. 

The manufacturer claims to double-test the batteries before shipping to ensure their reliability. And the manufacturer also claims to design it in a way that it doesn’t leak. If you are looking for a battery for door locks that will provide you with the best value for money, go for this. 

Another best part of this battery is, it is solely made in the USA. Whereas, bigger brands like Energizer and Duracell are manufacturers in other countries as well. 

There are some drawbacks to this battery. Even though the manufacturer claims it to be leak-proof, they don’t provide any time limitations. So, you don’t know when these batteries are going to leak. 

Some buyers claim that the Rayovac batteries start leaking shortly before a year. I myself encountered the battery leak while they were sitting on my shelves. Although this happened only one time, it made me concerned. It’s better to have a time estimation.  

However, if you decide to buy Rayovac for your lock door, just keep it on a regular check. And make sure there is no battery leaking. And if the battery is leaking, handle them safely.

Amazon Basics Alkaline Battery

Most Affordable Battery For Door Locks:


  • Cheaper price
  • Doesn’t leak unexpectedly
  • Long shelf-life


  • The power isn’t as reliable as other brands
  • Not widely available 

Discover the affordability and reliability of Amazon Basics Alkaline Batteries, a smart choice for your door locks. With a cheaper price tag and a reputation for leak-free performance, these batteries provide consistent power.

Just like Rayovac and Energizer, you can stock up on this battery for 10 years without any worry.

The great thing about this battery is, users are very happy with its leakproofness. There is no complaint about unexpected leakage during its lifetime. But as the manufacturer doesn’t provide any exact time frame, you should check for leaks regularly after a year.  

However, some users complain that the Amazon Basics battery draws power more than other brands like Energizer and Duracell. So, it’s not as long-lasting as them. 

There is another drawback. As it’s a product of Amazon, you may not find it available in many stores or online shops. It’s not even available at Walmart. 

Buying Guide For Batteries For Door Locks

While buying batteries for door locks, there are a few things that you have to keep in mind. 

Battery Type:

There are different types of batteries in the market, including rechargeable, non-rechargeable, alkaline, and lithium-ion.

Most door lock manufacturers recommend using alkaline batteries in the lock. Rechargeable batteries are not suitable because, unlike alkaline batteries, you won’t get any warning before the battery is completely dead.

And you will end up having a locked door before getting a chance to replace the battery. Depending on the door lock type, you may have to use either AAA or AA batteries. 

Battery Leak-Prooffness:

Batteries don’t usually leak when they are outside of the device., but when the batteries are inside a device for a long time, they start to leak. 

The leakage damages the device. As you have to keep the battery inside of your door lock all the time, it’s important to make sure the battery doesn’t leak. At least, ensure they don’t leak for a specific period of time. 

Usually, manufacturers of good-quality batteries ensure the leakproofness of their batteries for an exact time period. 

Battery Life:

Look for batteries with a long lifespan. Research which batteries last longer and provide consistent power. Some manufacturers provide estimated battery life, which can give you an idea of how often you’ll need to replace them.

Battery Shelf-Life:

Imagine, you have to go out and the door lock battery has died. You don’t have spare batteries for yourself. So, you can’t lock the door and go out. You don’t want that right? 

To avoid this situation, it’s important to stock up on some spare batteries. So, look for batteries with a longer shelf life. 

Brand Reputation:

Brand reputation is important when it comes to choosing a battery for your door lock. Good-quality batteries from famous brands provide better and more consistent power flow than bad-quality batteries.

Consider these factors and choose a battery for your door lock accordingly. Choosing a reliable battery for other types of locks is also important. For example, your Sentry Safe may not close suddenly, due to a dead battery. With reliable batteries, you have to face these problems less frequently. 

Frequently Asked Questions (FAQs):

How Long Do Batteries Last In Door Lock?

Usually, batteries last around 10 to 12 months in a door lock. The duration depends on the lock type and its power consumption. Smart locks can drain batteries even within 4 months. On the other hand, some door locks can last around 3-5 years if they’re not smart locks. 

What Happens When The Electronic Door Lock Battery Dies?

When the electronic door lock battery dies, the lock will stop responding to digital inputs. And the touchscreen or keypad of your door locks will stop working. If you have a smart lock, the lock will stop connecting to the apps on your device. 

Why Does My Digital Lock Battery Drain So Fast?

The digital lock battery can drain fast if you don’t use recommended batteries. For example, if you use rechargeable batteries instead of alkaline batteries. Also, if the batteries have reached their expiration date, they will drain faster. If there is an electronic short on the lock, it can cause a quick battery drain. 


So, here goes my verdict on the best batteries for door locks. Hopefully, this article will help you find the right one.  

It’s important to use a reliable battery on your door. And these 4 batteries are the most reliable brand in the market that you can completely trust. 

That’s all for now. All the best and goodbye!

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