It didn't work. I was so bummed!! I sent "issue" email, and Kim emailed me back in about an hour. She suggested maybe coil at end cap got compressed and instructed me to carefully stretch it out a bit. Sure enough, it's working now. Very happy indeed !! I already have the black, same version (2.5) but really wanted the red one lol. It matches my purse, my phone, and my redline red Challenger RT Classic
I sure appreciated the quick reply from Provape !!