I have a radwagon 4 with about 1700 miles. Don’t know if it matters but I live in southern florida and usually keep my bike outside. Not garaged much. Anyways got back from 2 week work trip and took it for a ride. I noticed my headlight would not turn on as always. Plugged it in at night and next day it wasn’t charged. Went on one more bike ride. Then plugged it again. Still not charging all the way. My charger has both indicating lights on. Battery lights with one out of the three bulbs showing it has a min amount. All my wires going to headlight are connected tight. I bench tested the light itself and it turns on. Any help would be rad. Thx.