Isolator Questions

I was just asking cause it never made sense to me. Why try to jam at 12v and not give your amps full power? I can run my Deka 9a78dt for 8 hours with the subs turned off and it will fire the car up like nothing. If I wanted to jam at the show and show off I would want full power anyways.

 
I was just asking cause it never made sence to me. Why try to jam at 12v and not give your amps full power? I can run my Deka 9a78dt for 8 hours with the subs turned off for 8 hours and it will fire the car up like nothing. If I wanted to jam at the show and show off I would want full power anyways.
Keeps my lights from dimming without upgrading and limits the amount of 1/0 I have to run to the back because only power from the alt. will be going to the back.

 
Well the way the isolator was explained to me was that the alt charges both sets of batteries but they are not directly connected. The alt I believe still charges the batts.
no those stinger ones with 2 posts make the batteries connected when closed. The kind that you refer to that keep the separate are the kind you find on rvs an some boats. the ones that loopkiller posted with 3 posts are the ones you want for what you are looking for

 
Stinger makes both Diode and Solenoid type isolators. Those eBay links were for Solenoid types which only isolate the batteries when the engine is turned off. Diode style relays always keep the batteries separate. You should look for a diode based isolator IMO. The only downside to the diode based isolators is that you will lose around half a volt using it. So it is recommended that you increase your alt output voltage to 15.0~15.5v to offset the loss.

EDIT: I just researched another new style of isolator that is based on FETs instead of diodes. ARGO makes some, but I have not found a US source yet. I will keep looking and let you know what I find. LINK. They only go up to a 200a model as far as I can tell though.

 
an isolator wont fix that
no those stinger ones with 2 posts make the batteries connected when closed. The kind that you refer to that keep the separate are the kind you find on rvs an some boats. the ones that loopkiller posted with 3 posts are the ones you want for what you are looking for
Ok I posted the wrong kind then.

The one I was talking about has 3 post: 1 for alt, 1 for front battery and 1 for the back ones.

 
Activity
No one is currently typing a reply...
Old Thread: Please note, there have been no replies in this thread for over 3 years!
Content in this thread may no longer be relevant.
Perhaps it would be better to start a new thread instead.

About this thread

Buck

5,000+ posts
little alien on campus
Thread starter
Buck
Joined
Location
Inside of a pyramid
Start date
Participants
Who Replied
Replies
42
Views
1,777
Last reply date
Last reply from
Buck
IMG_1882.jpeg

slater

    Oct 4, 2025
  • 0
  • 0
Screenshot_20251004_120904_Photo Translator.jpg

1aespinoza

    Oct 4, 2025
  • 0
  • 0

New threads

Top