On another side note, waaaay back, 1974 or so, One of the other mechanics was working on a Honda 350 trying to get it to start.
He had replaced a few parts to no avail and asked me to look at it. I hit the start button and told him that the battery was connected backward.
He said no, I checked that. I convinced him a new battery would fix it, it did.
Apparently the owner had the battery go dead flat and charged it with reversed polarity. It was spinning the starter backward.