I have been using, and abusing, these batteries and chargers for more than a decade now and was upset when I went to my local Sears store and saw that everything 19.2v C3 related was gone. They said "Go to Lowes".
So I did.
And guess what?
A bunch of generic crap. No 19.2v C3 goodies.
So I bought these. Mostly so I can keep using my extensive 19.2v C3 tool collection, but also because the generic replacement batteries give me the willies.