If sounds like the battery is stone dead. You now have to find out why. It could be finished and needs replacing but you rarely have a battery fail so bad that the charging system on the bike can't keep the bike running.
Charge the battery (if it will take a charge), record the voltage, then start the bike and see if the voltage increases or drops off. Sure does sound like the bike isn't charging.
One other thing, you said the bike runs well with a jumper battery. Hook it up and record the voltage before you start the bike and after. If the voltage goes up, you need a new battery.
