At present, most smart password locks on the market are installed with batteries, and only a few of them are directly plugged in, so many users will pay attention to how to change batteries for password locks. In fact, it is very simple to replace the battery with the password lock. There is a battery cover on the inner side panel. After opening it, you can replace the alkaline battery with the same size. Next, how to solve the problem when the battery is dead.

　　1. Use the charging treasure to charge the smart lock.

　　When using smart locks, if there is no electricity, we should first consider charging them. Most smart locks have a charging port under the handle. Usually, when designing, manufacturers consider that users may encounter power failure, so the charging ports are the same as mobile phones, so we can charge smart locks with charging treasure, so that we can unlock them with passwords or fingerprints.

　　2, use the mechanical key to open the door and change the battery.

　　When the smart password lock is out of power, you can also consider using the spare mechanical key to unlock it, and then replace it with a new battery. According to the production standard of China’s smart lock industry, smart locks will be equipped with mechanical keys, so we only need to use the keys to unlock when there is no electricity, and then pay attention to replacing the dead batteries in time.

　　3. It is recommended to change the lock core after unlocking the door.

　　Other users don’t bring keys and charging treasures when the smart lock is out of power, so they have to entrust professionals to unlock it. After the professionals who choose to file with the Public Security Bureau come to the door to unlock the lock, they can consider whether to replace the lock core according to the actual situation. If it is a class A lock core, they may wish to directly replace it with a class B or C lock core with higher security.

　　What is mentioned above is how to change the battery of the password lock and how to solve the problem when the smart lock is out of power when going out. Knowing this, we will know how to solve it when the smart lock is out of power again.