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The CR2032 is a lithium coin cell battery widely used in low-power electronic devices. 

== Name ==
The name "CR2032" follows the IEC standard naming convention: "C" denotes a lithium manganese dioxide (Li-MnO₂) chemistry (it is a common misconception that the "C" stands for "coin", but this is incorrect). "R" indicates a "round" or cylindrical shape, and "2032" indicates the battery’s dimensions—20 mm in diameter and 3.2 mm in height.

CR2032 batteries typically provide a nominal voltage of 3 volts and a capacity of around 220 mAh, depending on the manufacturer and discharging conditions.

== Applications ==
CR2032 cells are commonly found in:
* Watches and calculators  
* Motherboard CMOS memory backup  
* Remote keyless entry systems  
* Fitness trackers and heart rate monitors  
* Medical devices such as glucose meters  
* Small Internet of Things (IoT) devices

Due to their reliability and standardized size, CR2032 batteries remain a staple in portable electronics and embedded systems requiring compact, long-lasting power sources.

== Datasets ==
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|{{Template:Viewer/Link|page=Item:OSW81ec515cf7ed48488563e2f997b84d22|url=|label=Discharging Time Series of a CR2032 Battery at 11 mA}}
|This dataset contains time series data collected during constant-current discharge of a VARTA CR2032 lithium coin cell at 11 mA using a BioLogic battery cycler.
|https://doi.org/10.5281/zenodo.15067969
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