The first two digits of the battery model indicate the battery diameter, and the last two digits indicate the battery height (reduced 10 times) in mm ... Externally, the height of 2032 is 3.2MM, while that of 2025 is 2.5 mm ..
If there is no special requirement for product size, it can be universal. It's just a matter of time.
The capacity of CR2032 is 2 10mah, the capacity of CR2025 is 150mah, and the voltage is 3V.
Extended data:
Button cell is also divided into chemical batteries and physical batteries, of which chemical batteries are the most widely used. They are composed of anode (positive electrode), cathode (negative electrode) and its electrolyte.
Its outer surface is made of stainless steel, which is used as the positive electrode and the negative electrode is a stainless steel circular cover. The anode and cathode are insulated by a sealing ring, and the sealing ring is made of nylon. The sealing ring not only plays an insulating role, but also can prevent electrolyte from leaking. There are many kinds of button batteries, most of which are named after the materials used, such as silver oxide batteries, lithium batteries and alkaline manganese batteries.
Buckle battery recycling: In alkaline batteries, silver oxide batteries and zinc-air batteries using zinc electrodes, the zinc at the negative electrode can react chemically with the components in the electrolyte, so it will be corroded and consumed, which will not only reduce the available capacity of the battery, but also produce hydrogen gas, which will increase and expand the internal pressure of the closed battery.
In order to suppress this effect, zinc is usually covered with a small amount of mercury, but it will also cause mercury pollution to the environment from waste batteries. Although mercury-free button cell has been listed, due to technical or patent reasons, mercury-free button cell is not popular enough.