Exploring the Real Capacity of CR2032 Batteries
Was cool to be able to do this article, taking a deep dive into the real capacity of CR2032 batteries. the TL;DR version is that they are meant for REALLY low current draw over a long time, but it appears that you can stretch this for more inefficient use as needed: https://embeddedcomputing.com/technology/open-source/development-kits/cr2032-maximum-current-capacity-datasheet-reality-and-alternatives
Embedded Computing Design
Consider the humble CR2032 battery. Roughly the size of a quarter and capable of supplying around 225mAh at a nominal 3V, these little coin cells are used to power all manner of small electronic devices that require a small amount of power. One might assume they can easily discharge 10mA or so, to power something like an ATtiny85 microcontroller...
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