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[Jigg007]

Originally Posted by rty

Does it physically disconnect the alternator?

Like a clutch? Id imagine an alternator with no load would spin freely. Unless it powers its own magnets.

Unless its really long nighttime trips, a nice deep cycle battery plugged in every night would allow a little car to start so many times over. Even a 100 watt solar panel on the top of the car would provide enough juice to start the car over an hours charge on a battery.