3V voltage CR2032 button battery knowledge science popularization

1. Lithium manganese dioxide structure

The 3V CR2032 lithium manganese battery belongs to the lithium manganese dioxide structure. The positive electrode material is manganese dioxide with very stable chemical properties, and the negative electrode material is lithium metal. The electrolyte is lithium battery. The main components of the electrolyte are ethylene glycol dimethyl ether, propylene carbonate and lithium perchlorate. It is like a button, which is referred to as button lithium battery or lithium manganese button battery.

2. Naming standard

CR2032: Lithium manganese dioxide battery, named according to IEC standard. Where, C - represents the chemical battery system with lithium metal as the negative electrode and manganese dioxide as the positive electrode, R - represents the shape of the battery as a cylinder, and if it is square, F replaces it; 20 means the diameter of the battery is 20mm, and 32 means the height of the battery is 3.2mm. The nominal voltage is 3.0V, the end point voltage is 2.0V, and the rated capacity varies from 200mAh to 240mAh, depending on the manufacturer's level. With the requirements of the new industry, there are also specially improved batteries, whose capacity will be very different, mainly to improve their high current output capacity, such as those used for flash lamps or RF products.

The battery is commonly used on CMOS batteries on computer motherboards, other memory functions or power failure protection modules, electronic scales, calculators, electronic dictionaries and other products.

3. Shelf life

The storage life of CR2032 is usually 5 years. If the manufacturer's manufacturing level is not high or the quality control is not good, its life will be greatly shortened. The battery of domestic first-class brands can basically guarantee this life. If the service environment is ideal (sealed, normal temperature, no water interference, etc.), the service life will be further extended, up to 8 years, or even 10 years.

4. Can I charge

CR2032 cannot be charged! CR series battery is a lithium manganese battery! 20 represents the diameter of 20mm, 32 represents the height of 3.2mm, voltage of 3.0V, capacity of 210mAh, Panasonic of Japan 225mAh (rated capacity), and China LIDEA230mAh (rated capacity). If 2032 rechargeable batteries are required, they need to be changed to ML2032 (3.0V), LIR2032 (3.6V).