04-06-2015, 10:48 PM
Whenever I'm suspicious that one of my bike batteries is nearing the end of the line I do my completely unscientific test...no voltmeter...but do it at home and not far out on the road! ... Turn key to ON, don't start it, and leave it there with the headlight on for say, 5 to 7 minutes. Shut key off, wait a minute and then try to start the bike as normal. What happens next will tell you if the battery is toast, just weak and may take a charge, or fine.