CR Button Batteries: What They Are and How to Choose Between CR2016 and CR2032

CR batteries are one of the most common types of button cell batteries. They are lithium manganese dioxide batteries, known for their affordability and wide usage in everyday devices such as smoke detectors, bathroom scales, watches, and calculators.

What Do the Numbers in CR Batteries Mean?

Each CR battery model includes a four-digit number that indicates its physical dimensions:

  • First two digits: Diameter in millimeters
  • Last two digits: Thickness in tenths of a millimeter

For example:

  • CR2016 → 20mm diameter, 1.6mm thickness
  • CR2032 → 20mm diameter, 3.2mm thickness

Battery holders and compartments are specifically designed to match these dimensions, so choosing the correct model is essential for proper fit and performance.

CR2016 vs CR2032: Key Differences

While both CR2016 and CR2032 batteries share the same voltage (3V) and are non-rechargeable, they differ significantly in capacity and usage:

Feature CR2016 CR2032
Voltage 3V 3V
Capacity ~90mAh ~240mAh
Usage Time ~6 hours ~10 hours
Common Devices Watches, calculators PC motherboards, car remotes, toys

Where Are These Batteries Used?

CR2016 is ideal for low-power devices such as:

  • Wristwatches
  • Calculators
  • Small remote controls

CR2032 is used in higher-demand electronics like:

  • Computer motherboards (CMOS backup)
  • Car key fobs
  • Card readers
  • Toys and smart gadgets

Important Safety Reminder

Due to their small size, both CR2016 and CR2032 batteries pose a choking hazard, especially for children. If you have kids at home:

  • Keep button batteries out of reach
  • Ensure battery compartments in toys are securely sealed
  • Choose products with child-safe battery housing

Button batteries can be dangerous if swallowed, so proper storage and disposal are crucial.

Conclusion

CR button batteries are compact, powerful, and widely used — but choosing the right model matters. CR2032 delivers more capacity and longer life, while CR2016 fits thinner devices with lower power needs. Always check your device’s specifications and prioritize safety, especially in households with children.

Published by batteryclub

We are a trusted long-term manufacturer partner and wholesale agent specializing in laptop batteries, laptop AC adapters and some electronic products. We have tested the quality and safety of our batteries almost every manufacturer on the market. Our commitment is to provide our customers with the best prices and highest performance on the market.