Button batteryIt is a common type of battery in our daily life.

It often appears in cameras, watches, calculators, toys, etc. It is widely used because of its small space, light weight, long-term power supply, and ease of use.

However, most of the time, we throw it away when it is on hand. People do not notice that some types of button batteries can be recharged and put into use again. In order to effectively avoid the waste of button batteries and reduce environmental pollution, how to identify buttons Battery?

Button batteries are divided into primary and secondary rechargeable batteries:

1. Main battery. They are LR alkaline battery (1.5 volt), SR silver oxide battery (3 volt), ZA zinc air battery (1.4 volt), CR primary lithium battery (3 volt), etc.

2. Secondary batteries. They are lithium secondary batteries (3.7V), nickel metal hydride batteries (nickel metal hydride), nickel cadmium batteries (nickel cadmium), etc.

Alkaline button battery - good discharge effect, relatively expensive. Rated capacity is 15 mAh to 140 mAh. Most of them are used in electronic toys, hearing aids, lighters, watches, etc.

Silver zinc oxide button batteries are the best among button batteries. The capacity is larger than carbon and alkaline button batteries. The voltage stability is good. (90% of electricity, the voltage is stable above 1.45V, 10% of electricity, rapid linear discharge. ) This kind of battery has good leak-proof effect and is suitable for long-term use. Used in hearing aids, cameras, watches, calculators and other places.

In addition, button batteries use "zinc electrodes" - such as alkaline batteries, silver oxide batteries, and zinc air batteries. Mercury may be contained during the manufacturing process.

Therefore, it is also necessary to observe whether there is a mercury content mark on the battery casing.

The use of button batteries depends on selecting the battery type suitable for the corresponding environmental characteristics according to the actual situation. Try to use mercury-free button batteries, recycle them reasonably, and discard them at will to avoid polluting the environment. Primary batteries and rechargeable batteries should be distinguished and used reasonably and regularly.

Above, some content points are shared about button batteries. Therefore, for button batteries, it can be used for charging and recycling.