How to check the remaining battery level? (without special equipment)

I do n't know how much battery is left, but I don't know which one is new because it's a shame to throw it away.

Today I am going to show you how to check the battery level.

How to check the remaining battery level

If you look at the top and bottom of the battery, you can check the negative and positive poles. When it is dropped from a height of about 4-5cm with the flat side of the minus part facing down, some amount of remaining amount remains if it stands upright on the floor. 

Rather than immediately judging that it does not stand up properly at once, try two or three more times before judging the amount of use.

This is because alkaline is stored in a liquid state inside the battery, and the liquid state turns into a solid as the amount of use increases.

Therefore, when it turns into a solid, the battery does not stand up and falls over.

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How to dispose a battery safely

of batteries Did you know that batteries must be used in a waste battery box or a collection box placed in a designated place?

In the case of a house, you can dispose of it in a collection box at a community center or large mart.

If thrown together with general waste, there is a risk of explosion during the incineration process, and

heavy metals contained in batteries can be absorbed into the soil, leading to environmental pollution.

*original article: http://mommom.me/16348