3V扣式电池型号是根据电池规格直径和高度来划分，型号很多，直径20系列：CR2032.0CR2025.CR2020.CR2016.CR2030.CR2050.直径16系列：CR1632.CR1625.CR1620.CR1616.直径24系列：CR2450.CR2477.CR2430.CR2350.CR2354..小型号CR1220.CR927.CR1025.CR1225.CR1216.CR1212等。