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So, which is it...is there a baseline amount of power generation that gets wasted if it's not used, or does it only make however much is needed?
With the little I understand about it, I'm pretty sure it only makes as much power is needed. |
Think of your battery as a tank of water. The alternator refills the tank until it gets full, then waits until the level drops off to refill the tank again.
Those who think the energy drain of an alternator is constant just dont understand the fact that the battery voltage level "tells" the alternator Charge me Dont charge me If this was not the case all batteries would be overcharged into oblivion in a very short time, with the electrolyte cooked out of the battery. regards gary |
KU40 most alternators do not have the capacity to charge at rate greater than all potential drains combined.
Thats why if you jump start a car and rev up the engine in the good battery car, you can fry the charging system in that car. Maximum potential drain is far in excess of the charging systems capability. Cranking loads are generally several times the charging systems capacity. My car runs at a higher idle speed after a hot restart for a short time until the loss from cranking is recovered. regards gary |
Put simply: You will not see measurable FE gains as a result of turning off an original equipment radio.
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so really if it came stock on the car leave it and use it |
I read someone's post here today who said he ran a radio off a second battery, without charging, and it lasted several days before it got low. Given that a car battery stores very little power really, I'd say the average consumption is a small fraction of a hp in the end.
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I've just seen these graphs when looking at aftermarket pieces and I guess they don't indicate the load placed on the system for the test. |
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