wow, didn't know that, yeah, strange.
don't give up on those mods, as there is a chance they can come back to life. try them now & then, and plug em in now & then.
you did try a different tank on them like i said, didn't you ?
I did change tanks, but it wouldn’t work. I might try a different charger. I have better mods now, but that was nice enough for me to replace once. For a VW setup, it’s really light though.