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skinny
@Airhead
It's the idea of amperage causing a problem that bothers me. If there's no problem with the bikes electrical system it will only draw as many amps as it needs. Like Lynx I can see that the voltage regulator should be roughly the same between vehicles. You're probably right about a car battery having enough cranking amps to start a bike without the car running but large twins like the r80 have big batteries because a high compression twin takes some cranking so it basically uses a car battery anyway.