Max amps you've drawn from stock alt?
10-27-2012, 01:36 PM
#1
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Max amps you've drawn from stock alt? Hi, I am looking to purchase an amp but need to know how many amps I can draw from the stock alt? So I was wondering what you all have drawing from the alternator. Also can list like your wrms, and if you have a cap or deep cycle battery. I plan on doing big 3 and using a multimeter to find my amp draws but wanted to compare it to everyone else's.
10-27-2012, 04:42 PM
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The stock alternator is rated at 105 amps. You can cheaply and easily install a KG3/AD-244 alternator from a truck/SUV rated for 145 amps, it actually makes more at idle than than the peak of the stock alternator.
Installing the Big 3, using only class D amps, and installing adequate gauge wiring will help improve overall efficiency.
As far as what the stock alternator can handle... it's difficult to say because you can draw down the battery for short bursts of heavy usage, then recover once you let off the volume. If you see your voltage meter going down even slightly when you crank the volume, it's time to get a bigger alternator if you want to be able to sustain that kind of a load/draw.
Installing the Big 3, using only class D amps, and installing adequate gauge wiring will help improve overall efficiency.
As far as what the stock alternator can handle... it's difficult to say because you can draw down the battery for short bursts of heavy usage, then recover once you let off the volume. If you see your voltage meter going down even slightly when you crank the volume, it's time to get a bigger alternator if you want to be able to sustain that kind of a load/draw.
Last edited by Capricio; 10-27-2012 at 04:48 PM.
10-27-2012, 09:31 PM
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I'd recommend the KG3 alternator upgrade to anyone with serious audio ambitions. You can get one on ebay for like $60 and it goes right in, there's really no excuse not to put one in. Try one of those first, and if you still find you want something better than that, be prepared to pay a lot more.
10-28-2012, 09:34 AM
#5
The stock 105 A is a lot of power and the car rarely uses it all. (Without a sound system - maybe you'd get there if you operated the headlights, rear defogger, power seats, air conditioning, and turn signals all at the same time...)
