Don’t know everyone will take out the battery in the alarm clock or other equipment in order to confirm whether the old battery got electricity or not? Checking the battery’s ability by putting the battery in the alarm clock one by one, and then see if the equipment is running to judge whether the battery got electricity…
In fact, there is a super simple method, which can immediately know whether it can be used or not without the aid of instruments!
How to quickly judge whether the battery is charged or not?
Throw the battery with the positive pole facing up and the negative pole facing down vertically on the table, and throw it 2-3cm away from the table.
- If the battery has no rebound and is easy to stand, it means that the battery is charged.
- The battery bounces, it is difficult to stand, and it makes a crisp sound, which means it is dead. The higher the battery bounce, the lower the battery charge.
Simple, right? Let’s get it!
