I bought the Lipstick Power Adapter last year, and a while back it started acting up — it wouldn’t charge my ThinkPad X1 Carbon anymore. Actually, this problem is really annoying. First off, the adapter still charges: it charges phones, it charges a New MacBook, it charges a Switch, it can even charge a MacBook Pro. It just won’t charge the ThinkPad. Personally I figure it probably doesn’t support the PD protocol anymore. Thought about it for a bit, realized it was less than a year since purchase, so sending it in for repair was the only option.