Overload Protection For Trunk Mounted Battery

[BigCaney]

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

[SHOmethewayhome]

http://forums.vintage-mustang.com/mo...tion-fuse.html

this thread covers your question.

I'd double check the fuse size you would need.

hope this helps.

[d2freak82]

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.

[19sho90]

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

[yamahaSHO]

Originally Posted by 19sho90

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

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

[19sho90]

Originally Posted by yamahaSHO

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

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

[SHOZ123]

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

[kevinspann]

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

[SHOZ123]

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.

[Eric VerValin]

Originally Posted by d2freak82

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.
.

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.

[vortex2450]

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

[TwistedD85]

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.

[SHOZ123]

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