CR2450 is a 3V Coin Cell Battery by Panasonic which delivers consistent and long-lasting power. It’s made of Lithium Manganese Dioxide (LiMnO2) and is ultra-compact in design. It has a capacity 620mAh and it’s not rechargeable.
CR2016 is a lithium coin battery commonly used in automotive applications, sensors, medical thermometers, and other electronics applications. It uses a lithium/manganese dioxide (Li/MnO2) chemical system. The nominal voltage for a cell is around 3V.
Panasonic has introduced the latest evolution of its Li-ion cell, the NCR18650BD-improved which provides better reliability, longevity and performance alongside the requirements of contemporary applications.