91 r100 GS PD not starting
got home from a ride yesterday and left the key in my bike in the off position for a couple hours, later that night when i went to move the bike it barely turned over, but started, i rode about 50 feet and it died and wouldn't turn over, like the battery was dead, but none of the lights were dim. This morning i figured id jumpstart it and take it for a ride to recharge the battery, but after about 10-15 minutes of charging from the car it had the same dead battery symptoms when i tried to start it, but all the lights were their normal brightness (not like when the battery is actually dead). if its not the battery what could be causing this? bad starter motor?
any help would be greatly appreciated.