Overload Protection For Trunk Mounted Battery

Discussion in 'Gen 1 & 2 - Electronics & Audio' started by BigCaney, Mar 11, 2012.

  1. BigCaney

    BigCaney SHO Member

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    With the installation of my PowerDyne unit, I have relocated the battery to the trunk.

    My question is, I would like to install some overload protection for the battery.

    I don't want to something to go wrong or the battery to short out and burn my car down. Can I install a breaker or fuse that will handle the load and protect my car? I know a disconnect switch can be installed, but "instant" protection may make the difference in a emergency.

    - Mike :)
     
  2. SHOmethewayhome

    SHOmethewayhome BAD ROLE MODEL

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  3. d2freak82

    d2freak82 SHO Member

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    They make both breakers, and ANL fuse holders that will definitely work. I have my battery in the trunk, with a fuse in the trunk and a breaker up front.

    Only issue with the breaker under the hood seems to be heat, sometimes when it heats up too hot it will trip and not reset til it's cool again.

    You can get both reasonably cheap... For under 50$ you could probably have 2 of each, or mix match whatever so you could have 1 in both places too.
     
  4. 19sho90

    19sho90 SHO Member

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    Why would putting the battery in the Trunk increase your odd's of burning your car down?
     
  5. yamahaSHO

    yamahaSHO E85 whore

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    There's a lot more cable running the length of the car that can rub through and short out.
     
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  6. 19sho90

    19sho90 SHO Member

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    That's what i was thinking I just wasn't sure. Thanks.
     
  7. SHOZ123

    SHOZ123 SHO Member

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    I use fuses, don't trust CBs. On my G3 I uses a 150A fuse. Whatever the starter draws under constant cranking.
     
  8. kevinspann

    kevinspann 87 Octane

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    The fusebox has a 175A mega fuse on it for this, right? Couldn't this be used on a battery relocation?
     
  9. SHOZ123

    SHOZ123 SHO Member

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    What you want is protection from he battery to the starter. Using the MEGA fuse would leave all the wiring from the battery to the front unprotected.
     
  10. Eric VerValin

    Eric VerValin PiMPSKiLLET

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    What size wire are you using? Sounds like it could be a loose connection, or a loose ground on that breaker. When electrical "things" get warm, resistance goes up, so the same voltage would draw more if it was warm. On big electrical systems, its easiest to find loose lugs with IR cameras.

    It sounds like the heat from the engine is soaking into the breaker there maybe.

    Either way I'm subscribed... I have the wire, need to get a battery box yet, but I'm planning on doing this too here at some point. Then its on to put the oil filters where that battery was. :)
     
  11. vortex2450

    vortex2450 Buying Parts...

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    I just relocated my battery a couple weeks ago, the bigget priority would be avoiding running the cable in areas where it could rub through. For me I ra nthe cbale through the interior of the car under the door trim peicesand used a hole near the right rear subframe bushing to get into the engine bay and then split-loomed the cable.

    For a fuse I just installed a 175A ANl fuse in a waterproof (read: dirt/grease/oil proof) case I felt was good quality in the engine bay.

    I might also install a CB in the trunk for added protection.

    Here's what I used:
    Fuse Holder

    175A Fuse

    I couldn't tell you were to start for a CB but I' sure if you psend anything over $15 on a CB it should be quality.

    -Josh
     
    Last edited: Mar 19, 2012
  12. TwistedD85

    TwistedD85 ?

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    I was thinking about relocating the battery, but all of this has me having second thoughts, I didn't think it'd be this complicated or potentially dangerous.
     
  13. SHOZ123

    SHOZ123 SHO Member

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    A fuse is too much trouble? If you just want to loose weight then get a Lithium battery.
     

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