My recent model Gerbings is giving up the ghost and IÔÇÖm going to switch to Powerlet.
I just had a USB adaptor from Powerlet fail and I sent them an email late one night. I received an email back within an hour of their opening the next day. They placed a replacement in the mail that day along with a couple other small bits I had been looking for. No charge for any of it. CanÔÇÖt beat that.