CR2025 Vs CR2032 Key Differences in Coin Cell Batteries

Have you ever faced the frustration of opening a device to replace its coin cell battery, only to find that the battery you have on hand is just one digit off from the required model? CR2025 and CR2032—two seemingly similar button batteries—are among the most commonly used 3V lithium-manganese oxide batteries. But what exactly sets them apart?

Both batteries follow the International Electrotechnical Commission (IEC) naming standard. The first two digits, "20," indicate their diameter of 20 millimeters. The critical difference lies in the last two digits, which represent the battery's thickness in tenths of a millimeter. Thus, the CR2025 is 2.5 millimeters thick, while the CR2032 measures 3.2 millimeters.

This 0.7-millimeter difference in thickness directly impacts the battery's capacity. The CR2032 typically offers a higher capacity, meaning devices powered by this battery can run longer under the same conditions. While exact capacity values vary by manufacturer, the CR2032 generally provides 30% to 40% more capacity than the CR2025.

In practical terms, if a device's battery compartment has enough space, the CR2032 can often replace the CR2025. However, the reverse is not possible due to the CR2032's greater thickness. Consumers should always verify their device's specified battery model before purchasing, especially if the battery compartment has strict size limitations.

Additionally, while both batteries deliver the same voltage, the CR2032's higher capacity makes it a better choice for high-power devices, ensuring more stable power output and extending the device's operational life. When feasible, opting for the CR2032 is usually the smarter decision.

Understanding the distinctions between these two batteries can help consumers make informed choices and avoid unnecessary complications.