Bike wouldn't start today, and dash voltmeter read 10v, so I hooked up my charger. After 5 minutes it said fully charged, but bike still won't start and voltmeter still says 10v. I pull out my tester and the battery reads 13 volts, the charger is putting out almost 14v, but the bike's starter won't spin up, and the dash voltmeter reads 10 volts. Any ideas?