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What are the dry battery models?

The models of dry batteries are generally divided into: 1, 2, 3, 5, and 7, of which No. 5 and No. 7 are particularly commonly used. The so-called AA batteries are AA batteries, and AAA batteries are AAA batteries! AA and AAA both indicate the battery type; with the development of science and technology, dry batteries have developed into a large family, so far there are about 100 Many kinds. Common zinc-manganese dry batteries, alkaline zinc-manganese dry batteries, magnesium-manganese dry batteries, zinc-air batteries, zinc-mercury oxide batteries, zinc-silver oxide batteries, lithium-manganese batteries, etc.

AA is what we usually call AA battery, the general size is: diameter 14mm, height 49mm;

AAA is what we usually call the 7th battery, the general size is: diameter 11mm, height 44mm.

The important performance parameters of dry batteries are electromotive force, capacity, specific energy and resistance. The electromotive force is equal to the work done by the battery's non-electrostatic force (chemical force) when the unit of positive charge moves from the negative electrode to the positive electrode through the inside of the battery. The electromotive force depends on the chemical properties of the electrode material and has nothing to do with the size of the battery. The total amount of charge that a battery can output is the capacity of the battery, usually in ampere hours. In the battery reaction, the electric energy produced by 1 kg of reaction material is called the theoretical specific energy of the battery.

Carbon batteries are not only suitable for flashlights, semiconductor radios, tape recorders, cameras, electronic clocks, toys, etc., but also for various fields in the national economy such as national defense, scientific research, telecommunications, navigation, aviation, and medicine. Carbon batteries are mainly used in low-power appliances, such as clocks, wireless mice, etc. Alkaline batteries should be used for high-power-consuming appliances, such as cameras. Some cameras can’t support alkaline, so use Ni-MH.

The advantages and disadvantages of dry batteries

Benefits: High energy conversion rate, stable and reliable energy supply, can be made into various shapes, sizes, easy to use, easy to maintain, and can work in various environments.


Disadvantages: Store in wax seal when not in use to prevent the moisture in the electrolyte from evaporating. Also prevent high temperature and humidity. For electrical appliances that have not been used for a long time, remove the dry batteries to prevent the electrolyte from flowing out and corroding the electrical appliances. Pollute the environment after being discarded.




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