I have 97 dodge ram 1500 5.2l 8cyl. I aded dc to ac inverter.My stock altenator is 90A, i tested under load (with dc clamp current) on idle it puts out about 44A. I can replace my stock altenator with high output altenator but they are very price my other option is to go with like 136A from auto zone but the ? is does anyone know how much 136A altenator will put out on idle under load, and if anyone knows good place to get HO altenator paste me the link please.


ps. i m using aditional 45A with my dc to ac inverter i measure that as welll

 

It will put out 44A, the same as the stock one. The extra amps (over 90) won't make a difference until you're up in the 1500-2000 RPM range.

 

I m not so sure about that should be more since is outputing more on higher rpm 90 verse 136 i know it will be more then 44A on idle, just not sure how much more. My guess is 60-70A but i wanted to be sure, so if anyone knows please help

 

anyone

 

The state of charge of your battery and any electrical load will determine how much an alternator will output in the beginning. As they heat up, performance drops.
Some higher output alternators actually put out less current at idle speeds than smaller rated alternators. It's about the RPM.
What are you powering that 44 amps is not enough?

I have a full time battery monitor for my solar system. It will read alternator current as well. The highest number I've ever seen is 75 amps, and that's with heavily depleted batteries and a 130 amp autolite alternator.

That number 75 drops down to nearly insignificant levels far too quickly to really put any amps back into the batteries on a short drive.

I'm thinking of adding a second alternator with it's own voltage regulator wired to only my house batteries, in place of my useless AC compressor, and having it completely separate from the other alternator and vehicle's ECM voltage regulator.

If money is no object
http://www.defender.com/product.jsp?...6421&id=819489

Keep in ming our stock charging systems are designed to top off a starting battery, not charge a bank of deep cycle batteries as the Balmar alternator link above is.

 

I did find out that if i put smaler diameter pulley i will gain more amps at idle and that is what i m looking for and also there is posibility of my getting this altenator
http://www.qualitypowerauto.com/cata...Fcategory%3D75
If anyone buy anything from these people please let me know and any more info or sugestions would be great.