TIL: Battery Chemistry, 🪫life, 🔋level reporting

EBL has disappointed me a bunch recently. I have 48 of their rechargeable CR2 batteries that I found really worked well, but just 4 years later they no longer sell them anywhere. The last set of non-rechargeable CR2s I got them from didn't last long at all. Recently I got some CR2032s from them that were supposed to have a 5 year shelf life, but the neither the package or the batteries have a date stamp on them.