My Battery Relocation
So here are a couple pics from the finished product how my mini battery relocation to the trunk came out.

Things were very self explanatory, but ask questions if you want. I made the battery box and thread-cert into the trunk itself so the tie down if very secure.


Things were very self explanatory, but ask questions if you want. I made the battery box and thread-cert into the trunk itself so the tie down if very secure.

Thread Starter
Evolving Member
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From: Building a monster in my backyard
I just have to add to this thread that I've seen a lot of issues with relocating battery to trunk mainly from buying pre-fabbed kits with 4ga wire. Seems to be a lot of issued with battery melting or starting on fire. I did the relcation 10 years ago in my Ford Focus and I'm still running the same Optima red top in that car to this day with the battery in the trunk. I went to a welding shop and bought 00 arc welding wire and got a distribution block from a stereo shop. The system has worked flawless and my ground point in the trunk is just a rear seat bolt that was back there and I grinded off all the paint down to the steel. I'll do the same thing shortly in the Evo and will use minimum 1gauge welding wire which you can get in some of the summit racing kits and then probably a 200amp breaker.
Thread Starter
Evolving Member
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Joined: Mar 2007
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From: Building a monster in my backyard
Now that is freakin sweet, that may be my new set up when I need a new battery ( still on stock one). Is that a locking strap holding it down? Fire extinguisher good idea for everyone. I have one stashed there to.
A heads up to anyone who has or is thinking about relocating the battery to the trunk. I discovered the hard way that there are not very many good ground poiints for the battery. I had one that worked fine then a week later randomly had a no start issue ( I posted a thread on here for it). I used some threaded holes on the trunk sides, and while it may work for some for a while, its not the best. Make sure you at least scrape the paint to get a better contact. The best ground I have found imo is the spare tire 17mm bolt hole. Its not the prettiest place to mount your ground to, but from looking around back there during my install it is the best place, imo. Just thought I would throw this out there if any trunk mounted battery guys start having issues.
I pretty much did my relocation like this how to.
https://www.evolutionm.net/forums/ev...-kit-evo8.html
I used a 2 gauge wire, which will work fine unless you plan on having an aftermarket sound system. 2 gauge is the smallest I would go. 00 gauge seems like a bit overkill though. Keep in mind your using ~5-7 ft of cable max. here is my trunk setup:

https://www.evolutionm.net/forums/ev...-kit-evo8.html
I used a 2 gauge wire, which will work fine unless you plan on having an aftermarket sound system. 2 gauge is the smallest I would go. 00 gauge seems like a bit overkill though. Keep in mind your using ~5-7 ft of cable max. here is my trunk setup:

yes, the strap is holding it to the custom made bracket that is bolted to the spare wheel thread. If I could, I'd get a smaller optima battery, but those were not available over here.. Next thing to do is to pour some polyurethane foam in the trunk and replace these styrofoam pieces I put in..
if your looking to do a relocation moroso makes all the stuff to NHRA specs you would need if you want still race as well this is one site that sells them www.lethalperformance.com








