You can measure the current gear with a multimeter. The measurement result is much smaller than the rated current, and there is no electricity.
Button cell is widely used in various microelectronic products because of its small size, ranging from 4.8 mm to 30 mm in diameter and from 1.0 mm to 7.7 mm in thickness. It is generally used as a backup power supply for various electronic products, such as computer motherboards, electronic watches, electronic dictionaries, electronic scales, remote controllers, electric toys, pacemakers, electronic hearing AIDS, counters, cameras, etc.
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Button cell note:
Button cell recovery: In alkaline batteries, zinc oxide batteries and zinc-air batteries using zinc electrodes, the zinc in the negative electrode will react with the components in the electrolyte and be consumed by corrosion, which will not only reduce the performance of the batteries. This capacity may generate hydrogen, resulting in an increase and expansion of the internal pressure of the sealed battery.
In order to suppress this effect, a small amount of mercury is usually coated on the surface of zinc, but this will also cause mercury pollution to the environment from waste batteries. Although mercury-free button batteries have been introduced, due to technical or patent reasons, mercury-free button batteries are not popular enough.
Button batteries are not within the general mercury-free ban on dry batteries, but a small amount of mercury is still allowed, which must be implemented in accordance with the instructions of environmental protection units.
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