What Happens If Smart Lock Battery Dies?

Traditional locks have given place to smart locks in the age of smart technologies, which provide convenience, security, and peace of mind.  Smart locks have become an integral part of the modern home security system, allowing homeowners to control access remotely, grant temporary access to guests, and monitor their property with ease. However, like any electronic device, smart locks rely on a power source, typically batteries. However, what happens if a smart lock runs out of battery?

The Importance Of Smart Lock Batteries

Smart locks are designed to be wireless and operate independently, which makes them convenient and versatile. They rely on battery power to perform effectively.  The type of battery and its lifespan may vary depending on the brand and model of the smart lock. Some smart locks use traditional alkaline batteries, while others use rechargeable lithium-ion batteries. Regardless of the battery type, it is critical to keep them charged in order for your smart lock to continue to function.

What Happens To Smart Locks When Power Goes Out?

As we all know, the battery in a smart lock has a limited lifespan. When the smart lock’s battery runs out, the following events may happen:

Inability to Unlock: The first thing that may happen is that you are unable to lock or unlock the door. You’ll lose the major convenience of keyless entry, which is one of the main draws of smart locks. Smart locks are IoT devices that rely on battery power to maintain a wireless connection. As a result, the most evident result of a depleted smart lock battery is getting locked out.

Limited Access: Different smart door locks have different designs. In any case, they all have multiple access methods. When the battery runs out of power, you must use a physical key to access the keypad door lock, regardless of whether you normally unlock it using a biometric door lock or a password.

Temporary Access Issues: The most convenient feature of smart locks is temporary and remote access. Homeowners can open the door to guests remotely and provide temporary access codes to guests. The remote access feature is disabled when the battery is drained, and temporary codes may not work. This may result in guests being turned away.

Security Concerns: Perhaps the most serious consequence of a dead smart lock battery is the security risk it poses. Smart locks are designed to enhance home security, but when they don’t work, your home can be vulnerable to unauthorized access. In certain circumstances, an attacker or thief will use this chance to break into your home by damaging your lock.

High Security Fingerprint Lock

High Security Fingerprint Lock

How Do You Open A Smart Lock With A Dead Battery?

However, how to access a smart lock when the battery dies? Here are some ways:

Replace The Batteries Promptly: Regularly check your smart lock’s battery status through the associated mobile app or device interface. Most smart locks provide low battery warnings well in advance. Replace the batteries as soon as you receive a low battery indication.

Use A Backup Key: Most smart door locks have a traditional keyhole as an emergency backup solution. Check to see if your door lock has this feature. The keyhole is often found beneath the door handle or keypad. When the battery runs out, use a standard key to unlock the door. But it will help if you always have this spare key with you.

Emergency Power Source: Some smart locks offer the option to connect an external power source temporarily. This could be a portable battery pack or a 9-volt battery that can provide enough power to activate the lock temporarily. Consult your smart lock’s user manual to see if this feature is available and how to use it.

Scheduled Battery Replacement: To avoid unexpected dead batteries, establish a routine for battery replacement. This might be every 6-12 months or as advised by the manufacturer, depending on your smart lock and battery type.

 Security Door Lock

 Security Door Lock

How Do Smart Locks Get Power?

Smart locks are designed to enhance the security and convenience of modern homes, and most smart locks are battery-powered, using standard alkaline or lithium batteries to provide reliable and long-lasting power. These batteries are housed within the lock, giving it a sleek and inconspicuous appearance. Some smart lock suppliers, such as Be-Tech, will also offer backup power alternatives to ensure continuous functioning.

Choose A High-quality Smart Lock In Be-Tech

Choosing a high-quality smart lock is also an important thing. As a reliable smart lock supplier, Be-Tech is devoted to providing various smart locks suited for different applications. Most  Be-Tech smart locks can be energized with a power backup when you forget the electronic door lock battery replacement. Such as Be-Tech Smart Deadbolt-K3S, Be-Tech Smart Deadbolt Lock K3U, Fingerprint Digital Door Lock -K5FMT, etc. In addition, there will also be a low battery warning signal. When you open the door, a continuous “beep” sound will play to remind you to change the battery. Therefore, the Be-Tech smart lock can effectively reduce the occurrence of door lock power failure to a certain extent.


It is critical to understand what occurs when a smart lock battery dies. To prevent this, the battery status of your smart lock must be regularly monitored, and a plan in place for battery replacement or alternative access methods. Make sure your smart lock provides easy access.

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