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Do Keyless Door Locks Have Batteries? (How Do They Power)

By Howard Bowman

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Keyless door locks are an increasingly popular type of door lock. Unlike traditional locks, keyless locks need to be set up and programmed. With your fingerprint or an entry code, you'll be able to gain access to your home without a key. Due to this design, many people have wondered whether these locks use batteries.

Most keyless door locks sold today are battery-powered. While many keyless entry systems use four AA batteries, some will use specialized batteries designed to last longer. Due to this design, keyless door locks will become slow and glitchy when the battery is running low.

If you're intrigued by the concept of keyless door locks, we'll explain everything you need to know about how these locks are powered. Once we've looked at why these advanced locks are battery-powered, we'll look at how long these batteries last, when to replace them, and more!

Do Keyless Door Locks Use Batteries?

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With keyless door locks, homeowners no longer need to keep their keys on them to get back into their homes. This functionality is very convenient, especially because keys are one of the most misplaced, lost, or stolen items. Furthermore, many keyless locks are compatible with Bluetooth and Wi-Fi, which links them to a dedicated app on your smartphone.

Some keyless locks will even have built-in cameras and allow you to remotely let people into your home! These advanced door locks even allow homeowners to save money on rekeying without sacrificing any security. Of course, to provide this functionality, keyless door locks need to be powered.

When browsing different keyless door locks on the market, you'll notice that most are battery-powered. Unfortunately, this means that electronic keyless locks will require batteries to operate normally. Generally, keyless door locks require premium-grade alkaline or lithium batteries.

Your keyless door lock manufacturer will also stipulate a specific battery voltage. With most keyless locks, the appropriate batteries are included with your purchase. Read on as we closely examine how most keyless door locks are powered today!

How Are Different Keyless Door Locks Powered?

There are many similarities between keyless door locks and traditional locks. However, one of the main differences between them is that one is powered while the other isn't. As we explained above, most keyless door locks are battery-operated, with batteries providing the necessary power for this functionality.

Schlage's Connect Camelot Touchscreen Deadbolt Smart Lock With Alarm is one of the most popular smart locks sold today. Like many other keyless locks available today, this lock uses four AA batteries to be powered. Four AA batteries also power Ultraloq's UL3 Fingerprint and Touchscreen Keyless Smart Door Locks.

While most keyless door locks use AA batteries, some are manufactured with unique batteries designed with longevity in mind. For instance, Schlage's Camelot Keypad Lock With Accent Lever uses a singular 9V battery that delivers an exceptionally long battery life. Despite the long battery life, this keyless entry system has a failsafe key for when the battery dies – which brings us to our next point!

Do Keyless Door Locks Work When Your Power Goes Out?

Many homeowners have wondered whether keyless locks work when the power goes out. Due to the battery-powered design, keyless entry systems will operate normally even when the power to your home goes out. However, this design also means that keyless locks will not function when the batteries run out of juice.

Of course, some keyless locks may have a backup key that allows you to gain access to your home if the batteries in your keyless lock die.

Read on if you're wondering how long keyless door batteries typically last and how to tell when they need to be replaced!

How Long Do Keyless Door Lock Batteries Last?

As we explained above, battery-powered keyless door locks will continue functioning even if your power goes out. However, due to this design, most keyless locks will only work when the batteries have power. If these batteries die, you will not be able to operate your keyless lock.

Due to this, many people interested in keyless locks have wondered how long the batteries typically last. You'll be glad to know that most keyless door locks sold today will last between three and five years on the original batteries. Of course, your first set of batteries is typically provided with the keyless lock.

Due to the advanced design of these locks, the batteries can last many years. Ultimately, these locks are designed to operate with minimal battery power. However, even with these batteries' long lifespan, you may wonder how you'll know when it's time to replace them. After all, you don't want to get locked out of your home!

When To Replace Your Keyless Door Lock Batteries?

When your keyless door lock is running low on battery power, you'll find it begins to operate more slowly and may become glitchy at times. Of course, replacing the batteries in your electronic lock will fix these issues. Due to the advanced design of these locks, you don't need to wait for your lock to glitch to replace the batteries!

In your keyless lock's user manual, the manufacturer will outline the process of replacing the batteries and when to do this. In addition, with some models, the lock will be equipped with a warning light or sound, which alerts homeowners when the battery is running low.

As we discussed earlier, many electronic locks are Bluetooth and Wi-Fi compatible, which allows them to be connected to smartphone apps. With smart keyless locks that can be controlled by a mobile app, the app will notify users when the lock's battery needs to be replaced.


Keyless door locks are advanced entry systems that allow users to access their homes without a traditional key. Instead, a unique code or fingerprint reading will be used. In addition, these keyless locks are battery-powered, which allows them to be used even when the power goes out!

These locks are designed to use minimal battery power, allowing them to last multiple years before a replacement is necessary. Furthermore, most keyless locks will notify you when the batteries start to run low and need to be replaced.

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