Extra/Back-up battery help - Car Audio Classifieds!
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Old 06-19-2010, 04:02 PM
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Default Extra/Back-up battery help

So I just shaved the door-handles on my car and installed poppers, and i want to put a small back-up battery in case I leave my headlights on or something gay like that.

So, my question is. How could I install a battery that will still be charged by the alternator but won't be drained if the main battery goes dead or there is some kind of draw?
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Old 06-19-2010, 04:05 PM
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Originally Posted by BlueLude View Post
So I just shaved the door-handles on my car and installed poppers, and i want to put a small back-up battery in case I leave my headlights on or something gay like that.

So, my question is. How could I install a battery that will still be charged by the alternator but won't be drained if the main battery goes dead or there is some kind of draw?
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Old 06-19-2010, 07:15 PM
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I'd hook only your backup battery to the door poppers and not the main battery because if you have them both hooked to the poppers it will drain your backup through the connection at the poppers.

And yes, use an isolator. That way it is hooked up to the main batt when the engine is running and disconnected from it when it's off.

You might want to relocate your hood and/or trunk release cable to an outside part of the car that nobody knows where it is just in case.

I've never liked door poppers for that very reason.



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