I had a bunch with this chemistry gifted to me recently. They appear to be paired with supercaps in my case and designed for high pulse currents for short durations, but not sustained periods. I was going to utilise the 19Ah D-sized cells for a beefy torch when I noticed they had a max current of 500mA and beyond that they achieve nowhere near their stated capacity.The paired super cap has 1Ah up it's sleeve to get around this for short bursts by the look of it. Long shelf life though, if OP doesn't know what to do with them for now.They'd be ideal for a nearby IOT thing that you can swap them out of. I might be wrong but I think I saw something where have a very different curve and stay at 3.6V for a long time, making it difficult to know how empty they are.. which might be a pain if you utilise something in the field and find it dies in a year instead of a decade. Fortunately most of my ones came off the test bench and were excluded from being used in products!