mostly a headache - a little bit is the BS with my BIL scooter. I went and bought new batteries for it yesterday that were supposed to be fully charged and ready to use... YEA - not. So I installed them and expected the thing to just work, so another day gone and I still don't know if it's just the batteries or if the thing has a deeper issue - a little pissed off at the dickheads that sold me the batteries