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How do you open a fingerprint safe when the battery dies?

by:Proway     2023-07-01

Fingerprint safes are a popular choice for securing valuable items or documents. They provide an added layer of security as only the owner's biometric data can grant access to the safe. However, just like any electronic device, fingerprint safes rely on batteries to function. If the battery dies, you may find yourself locked out of your own safe, which can be frustrating and stressful. In this article, we will discuss the steps you can take to open a fingerprint safe when the battery dies.

Understanding Fingerprint Safes

Before we dive into the specifics of opening a fingerprint safe with a dead battery, let's first take a step back and understand how these safes work. Fingerprint safes use biometric data to grant or deny access to the safe. When you want to unlock the safe, you place your finger on the fingerprint scanner, and it reads your fingerprint to determine whether to grant access or not. The scanner is connected to a circuit board inside the safe, which activates the locking mechanism to open or close the safe.

Fingerprint safes are powered by batteries, typically AA or AAA batteries, which can last for months or even years depending on how often you use the safe. However, when the batteries run out of power, the circuit board inside the safe cannot receive any signals from the scanner, and the safe becomes locked, denying you access to its contents.

Troubleshooting Your Fingerprint Safe

If you find yourself in a situation where the battery on your fingerprint safe has died, don't panic just yet. There are several things you can try before resorting to more drastic measures.

First, try replacing the batteries with fresh ones. This is the easiest and most straightforward solution to the problem. Most fingerprint safes have a battery compartment located on the inside of the safe or on the backside of the scanner. Open the compartment, remove the old batteries, and replace them with fresh ones. Make sure to follow the manufacturer's instructions on how to install the batteries correctly.

If replacing the batteries doesn't work, try cleaning the scanner. Over time, dust, dirt, and fingerprints can accumulate on the scanner, which can interfere with its ability to read your fingerprint correctly. Use a soft, lint-free cloth to clean the scanner, making sure to remove any debris or smudges that may be blocking the scanner. Once you've cleaned the scanner, try unlocking the safe again.

If neither replacing the batteries nor cleaning the scanner works, you may need to reset the safe to its factory settings. To do this, refer to the manufacturer's instructions on how to perform a factory reset. This will erase all data on the safe, including any fingerprint data you may have stored. You will need to reprogram the safe with your fingerprints.

Opening a Fingerprint Safe Without Batteries

If all else fails, and you still cannot unlock your fingerprint safe, you may need to resort to more drastic measures. Here are some ways in which you can open a fingerprint safe without batteries.

Using an External Battery Pack

One solution is to use an external battery pack to power the circuit board inside the safe temporarily. To do this, you will need to remove the batteries from the battery compartment and find the positive and negative terminals that connect to the circuit board. Once you've located these terminals, connect the external battery pack's positive and negative wires to them and turn on the battery pack. This will provide enough power to activate the locking mechanism and open the safe.

Using a DC Power Supply

Another option is to use a DC power supply to power the circuit board. You will need to locate the DC jack on the safe, which is where the batteries usually connect to the circuit board. Once you've found the DC jack, you will need to connect the positive and negative wires of the DC power supply to it. Turn on the power supply, and the safe should open.

Using an Override Key

Some fingerprint safes come with an override key, which can be used to unlock the safe when all else fails. The override key works by bypassing the fingerprint scanner and manually unlocking the locking mechanism inside the safe. To use the override key, locate the keyhole on the safe, which is usually located near the fingerprint scanner or on the backside of the safe. Insert the override key into the keyhole and turn it to unlock the safe.

Calling a Locksmith

If all else fails, you can always call a locksmith to open your fingerprint safe. Locksmiths have the tools and expertise to open any type of safe, including fingerprint safes. They will usually begin by trying to replace the batteries or reset the safe to its factory settings. If these methods don't work, they may use special tools to manipulate the locking mechanism or drill a hole in the safe to access its contents.


Fingerprint safes are a great way to secure your valuables, but they do rely on batteries to function. If the batteries die, you may find yourself locked out of your own safe. Before resorting to more drastic measures, try replacing the batteries, cleaning the scanner, or resetting the safe to its factory settings. If all else fails, you can use an external battery pack, a DC power supply, an override key, or call a locksmith to open the safe.

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