As part of my business, I deal with a fair amount of batteries. I’ve dealt (and still deal) in all flavors of these: alkalines, nickel metal hydride (NiMH), sealed lead acid (SLA), the god-awful Nickel Cadmium (NiCd), Lithium Polymer (LiPoly or LiPo) and the now rather venerable Lithium Ion (Li-Ion). Recently, I purchased a really amazing camera for the production company, and in so doing have come into possession of some Sony InfoLithium batteries (the “L” type, for professional camcorders). As it happens, I already had some of them because of a piece of audio equipment that runs on those type of Sony batteries, but that’s not the point, is it?
Years back, I purchased a Sony MiniDV camcorder, a really nice compact one. And as part of that, it came with a (now totally defunct and dead) InfoLithum M-type battery, model number NP-FM50. Now that those years have passed and this battery is no longer viable, I figure its best purpose is for science, wouldn’t you agree?