One day, the door lock beeped to tell me to replace the batteries. I opened the lid to change them, and there were 6 batteries inside. Wow. Are all 6 of them really dead?
So I looked for some great tips on checking if the battery is dead, and there were a lot of ways to do it, but I don’t know if it’s because the difference is so small or because I’m just immature, but I couldn’t tell the difference. But a few days ago, I found out a new method This is a really clear method.
Try pressing the numbers on the smartphone keypad with the + side of the battery. If the number is entered normally, it means that there is enough charge left in the battery. On the other hand, if the number is not entered properly, the battery is dead. Sometimes the number is entered, but there are cases where it does not respond right away and there is a delay. This means that the battery has little charge left.?? So then ~~~ Where is the remaining battery? Let’s look for it ㅎㅎ