How Many Amps Does A Car Alternator Put Out. For high-amp alternator it can generate up to 300 Amp. Simple and Affordable Online Auto Parts Shopping.
For a battery being charged by the cars alternator it can take an hour of driving to get it fully charged. I have been charging about an hour now. Car batteries range from 40AH to 110AH and alternators range from 45 amps to 200 amps.
If you see a modern vehicle that measures the life or temperature of the battery it is bad practice to use the positive and negative battery terminals to power aftermarket accessories.
Guaranteed Low Prices on All Auto Parts. Does the alternator charge the battery while idling. My alternator with car running and charging is putting out about 136V measured at the battery. This is on a 51 amp Prestolite alternator that is typically used on marine engines.
