If you use a small device like a digital watch, garage door opener or even a remote control, you may have noticed that it�s powered by a tiny, disk-shaped battery. That tiny cell may be a CR1632.
In the past, they contained harmful metals such as silver and mercury. Nowadays, they�re made using lithium as the negative material and manganese dioxide as the positive material. Consequently, they can also be referred to as coin type lithium manganese dioxide batteries.
So, what�s the meaning of the letters and numbers in the coin battery label �CR1632�?
Readmore
https://batteryspecialists.com.au/blogs/news/cr1632-batteries