so let me get this straight ,you have charged the battery and it goes dead or its o and when your ride it it goes dead ? it sounds like either the battery is faulty the fuse has blown or its not charging ,you need to check the fuse then charge the battery and see if it works but goes dead after a while ,if it does end up going flat then the battery is either faulty or discharging on the bike from a wiring fault or the generator or regulator/rectifier is faulty.
adam bike doctor(of milton keynes motorcycle centre)
January 2011