The GP CR2032 is a 3-volt, lithium manganese dioxide battery. This cylindrical single-use battery is commonly used in calculators, computer motherboards, watches, keyless entry remotes, electronic door locks, and toys. The CR2032 is 20 millimeters in diameter and 3.2 millimeters thick, and it has a capacity of approximately 225 mAh. Additionally, this battery has a wide temperature range, allowing it to function effectively in both cold and hot climates.