i put a new battery in my bike last week and i went out rideing on it and the lights and all that where well bright and after about an hour they all whent doll and the battrey is more or less dead i fault it could be the altornater wat u lot think
Had a similar problem with my old ped, a Sym Jet 50. All of a sudden it was fine though. Get a Tricle Charger mate, and plug it in every night, see how the problem goes
Had the same problem on my gilera runner 180sp, turned out to be the alternator, not cheap On my CBR 600, had the same problem, used a trickle charger, had to put it on every 2 days or I'd have a dead battery, turns out it was the rectifier. I wouldn't think it would be the alternator, but maybe the rectifier, check it as it may be burnt out and need replacing, not sure where it is on your bike though
sounds like a alternator problems jsut like the others said thats y it aint returning the charges to it and thats y u got a dead battery, get yourself a new alternator.
Right well basically, if your sitting on the bike, its to the right of you, behind the black cover [liquid cooled on it], undo that cover and youll uncover the magneto etc... to remove this you will need the puller tool, [i've got one so gimmie a shout if your stuck] then its basically just checking everything behind that...