Do All Smart Locks Require Batteries?

Smart locks are becoming more popular than traditional locks in modern times because they offer more benefits than traditional locks. Smart locks require power, and most get theirs from batteries. But does every smart lock need batteries to work? Continue reading to find out.

Are all smart locks dependent on batteries?

Yes. All smart locks are powered by batteries. They can last several months, depending on the lock. Your smart lock’s batteries power the LED lights, wireless chips and the motor that locks and unlocks your door. 

Types of Smart Locks Batteries 

There are two types for smart locks batteries: alkaline (AA), or lithium batteries. There are many differences between the two types of batteries, each with its own advantages and disadvantages.

1. Alkaline Batteries 

An alkaline battery (dry cell battery) is one that has a positive end (zinc cathode) as well as a negative end. Alkaline batteries have a higher popularity than any other type of battery. They are used in smart locks and home appliances.

Alkaline smartlock batteries are often less expensive than their lithium counterparts. They are safe for the environment, contain no heavy metals, as well as being non-toxic.

Alkaline batteries have one drawback: they can’t be recharged and will run out of power faster. Alkaline batteries are cheap, so it is easy to replace them. Make sure you have plans in place to protect yourself against lockouts, should your alkaline smart lock batteries fail.


2. Lithium Batteries 

Lithium batteries can be made from lithium or carbon, and some of them are rechargeable. Some lithium batteries are rechargeable, so they last longer than alkaline smart locks batteries.

On average, lithium batteries are more expensive than alkaline batteries — a factor to consider carefully before buying. The degrading rate of lithium batteries is faster after they leave the manufacturer. This causes them to lose more energy as they age.

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Due to the potential dangers associated with lithium smart locks batteries, only a handful of manufacturers recommend them. Alkaline batteries offer greater cost-effectiveness and consistency. Equally, they don’t degrade under extreme heat, as lithium batteries do, making them useful for outdoor applications.

If the smart lock manufacturer recommends lithium batteries, they can be a good choice. You should never try to use lithium batteries if your smart lock manufacturer doesn’t recommend them.

Why do some Smart Locks Drain Battery?

As we have already mentioned, smart locks are powered by battery power. Smart locks can use power in different ways. Some drain batteries faster than others. There are many reasons smart locks drain battery differently. Let’s take a closer look:

1. Protocols for Communication

Communication protocols are methods smart locks use for communication with your smart home system and mobile phone.  There are three types communication protocols: Bluetooth and WiFi. Wi-Fi, and Z-Wave. These protocols use different amounts of battery power.

Bluetooth: Bluetooth is the simplest communication protocol. It requires you to stay within 300ft of the lock to allow your phone to connect. Bluetooth-based smart locks are low in frequency and require little battery power. With luck, a Bluetooth smart lock’s batteries should last between 10-12 months before running out of juice.

Wi-Fi: Wi-Fi is one the most innovative communication protocols. Your phone can be connected to the lock from any location, allowing remote operation. This functionality comes at a cost: higher battery consumption. Wi-Fi-based smart locks The battery life of smart locks is longer than other models. Wi-Fi smart locks last for 2-4 months.

Z-Wave: Z-wave combines the best aspects of Bluetooth and WiFi into one protocol. Z-Wave allows remote connections and is as functional as Wi Fi. It consumes battery power in small quantities, but it is just as energy-efficient Bluetooth. Smart locks using Z-Wave Their batteries should last for 12-18 months.

2. Battery quality 

Your smart lock’s ability to drain battery power is directly related to the quality of your batteries. Established battery brands like Energizer and Duracell are durable and don’t drain quickly. However, a cheaper brand of battery may drain quickly and degrade quickly.

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3. Frequency of use 

The rate at which the battery drains can also be affected by how often you lock and unlock your doors. Every time you use the smart locks, it draws some power to retract or extend your deadbolt. If your door gets a lot of usage, the battery might drain faster.

4. Weather 

From research, it’s obvious that temperature levels can influence how much of the battery drains when the smart lock is in use. Some batteries drain faster when it is cold, while others drain quickly in hot weather. Consider a battery’s susceptibility to temperature before buying it.

Best Battery Brands Smart Locks 

There are many companies that produce smart lock batteries. Not all models are the same in durability. Some models may leak or drain faster, which can result in a disappointing battery lifetime.

Based on our research, these are the best smart lock batteries

1. Energizer 

Energizer is a well-known brand for its reliability and exceptional performance. As it doesn’t leak or drain quickly, the Energizer battery is good for smart locks.

The Energizer Triple A Max is a model that you can buy from Energizer. This battery can store power for up 10 years, so you can use it whenever and wherever you like.

Energizer Triple is leakproof for up two years, unlike other batteries. And Energizer will cover any leakages that occur within the battery’s life or two years after full use.

2. Duracell

Duracell is another brand that makes great smart locks. Duracell batteries are long-lasting and resistant to early leakages.

Duracell CopperTop alkaline batteries are an excellent choice for smart locks. This battery is made to last and provide great power to keep your smartlock active.

CopperTop AA batteries are covered by a 10-year storage guarantee. They are also resistant to leakage.

3. Panasonic 

Panasonic rounds up our top-rated battery brands for smart lock batteries. Panasonic makes excellent smart lock batteries, including one called the Evolta.

After a year of usage, Panasonic Evolta batteries can retain up to 80% of its capacity. They can also be recharged multiple times in a single cycle. Even better, Evolta batteries can be recharged multiple times within a single life cycle.

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Similar Questions

Should I use alkaline or lithium batteries to power my smart lock?

Both alkaline and lithium battery have their own pros and cons. Most manufacturers recommend alkaline batteries to replace lithium models. However, you should still consider purchasing a lithium battery if you are familiar with the risks and benefits.

How long does the battery last in my smart lock?

Smart locks have a variable battery life. In general, the batteries in Bluetooth smartlocks and Z-Wave last longest, followed closely by those of Wi-Fi smartlocks. Continue reading smart locks batteries life.

What if my smart locks batteries die or stop working?

Unannounced dead batteries in smart locks can be quickly replaced to get it working again. However, it’s rare for your smart lock batteries to discharge completely with no notification, so replace your battery on time when it alerts for low batteries.

Low battery alerts on smart locks will be activated when the battery capacity falls below 30%. This will continue until the battery dies. Timely replacement can help you prevent a situation where you’re locked out because your smart lock power is off.

Some smart locks have a keyhole so you can use a mechanical key to unlock your doors before replacing your batteries.

How are smart locks powered

All smart locks are currently powered by a battery. These can be either regular alkaline or lithium batteries. August smart locks can be powered by regular AA, 3V CR123, or CR123A batteries.


Although smart locks may eventually run on electricity, for now you will have to use battery-powered smart lock. Your choice of batteries should reflect your smart lock’s communication protocol, among other things.

While alkaline models are still the best, you can also use lithium variants. Duracell, Panasonic, and Energizer are some of the most popular models.

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