Before you go directly toward the differences, I think it would help best to start with a clarified notion of CR batteries. What is a CR battery? Any idea?
Well, CR battery is a coin-type lithium manganese dioxide battery. It’s a tiny, portable cell with an operating voltage of 3V. It is capable of operating over a range of temperatures.
CR1616 vs CR1620 Battery

There are a number of brands as well as a number of applications. God knows which one you will need. That’s why we have designed this detailed post to benefit you end-to-end. Such an article will be helpful for the researchers as well. Have a nice day!
Resource:
- Coin Cell Battery Standards: https://data.energizer.com/pdfs/lithiumcoin_appman.pdf
- Lithium Battery Safety Guidelines: https://www.fda.gov/medical-devices/batteries-and-battery-powered-medical-devices/lithium-battery-safety
- Battery Chemistry Explained: https://www.batteryequivalents.com/lithium-battery-chemistry.html
- Watch Battery Size Chart: https://www.watchbatterycrossreference.com/