Thanks. Are the cells' expiration date based on 1 year from when you put them in or is it based on the manufacturer's "don't use after date? I'll look for the photos. I threw a button gauge on the regs because I had a couple lying around. I'll see how I like that and then will try the real spg.
No, that's the manufacturers date. I rarely, if ever, get the opportunity to put a brand new cell in a unit, and if I do, it doesn't make it a full 12 months.
I also bin them when they're reading down to 9mv in air. BTW, speaking of voltages, here's another weirdness I've seen. I had two cells flame hot right before they died. They started reading 14+mv in air, they lasted all of 24 hours after they started that behavior and when they died, they were reading 0mv.