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Battery trunk relocation options


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I am planning on relocating the battery to the trunk. Does anyone have any options out there for kits besides the Top End Performance kit? I really dont like the way their rear Brace looks with the battery in the center. I know theirs is a well built item. I just don like the looks.

Any other options out there off the shelf? Or; is the alternative a custom job?

Any suggestions/pictures would be appreciated.

Thanks in advance!

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FYI - Just swung by the local Pick-n-Pull and grabbed the positive cable to the trunk, negative cable, terminal block, and positive cable from block to starter from an E46 for FOUR DOLLARS. Yes, $4! T

Unless you want the cool look, forget the shock tower brace. Like the name says, they are shock towers, not strut towers. There is no side-load on shock towers. A brace would just add weight. The pict

That's the best looking trunk mount I've seen yet. Dumb shock tower brace delete!

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I went to Walmart and bought a set of jumper cables, battery ends and a Marine battery box. The Marine battery box came with a strap and 2 bolt on mounts to strap the battery box down.

It cost me about $50 for all the parts (I hard wired my battery to the car, no battery jumper connection in the engine bay and I didn't need a rear strut brace).

post-15112-13667631068603_thumb.jpg

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Unless you want the cool look, forget the shock tower brace. Like the name says, they are shock towers, not strut towers. There is no side-load on shock towers. A brace would just add weight. The picture shows my solution to the battery mounting question. I like the space for a toolbox. Yeah I know, the battery should be on the other side of the trunk; or should it? The fuel tank is on the passenger side and the engine leans to the right. I'm not sure if there is any weight bias toward the driver’s side. I mounted the battery on the left side just to keep the cables as short as possible and keep resistance down. Oh did I mention? I really like the space for a toolbox.

post-18159-13667631077026_thumb.jpg

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The best -- the only -- way to go is underseat. (http://www.zeebuck.com/bimmers/tech/batteryrelocation/underseatbattery.html) Why put it in the truck and take up room when you have dead, empty space where it will fit? And those TEP braces suck -- the one in my e21 made the shock tower separate. Stay away from that!

If you have a touring, it goes near spare tire well (since it can't go under seat):

touringbatteries.jpg

Or you could put one under the rear seat. From my 73 CS

P1010821.jpg

Doug

Matt McGinn came up with a similar solution but with an actual steel box that hung down underneath the floor slightly. I can't find it right now, but it's pictured somewhere on his website http://www.sports-car-restoration.com

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Dumb question time: How do you jump start the car with the battery under the rear seat? And isn't it a PITA to have to take the battery out to replace it/charge it on a charger?

Same as with new BMWs that have the battery under seat or in trunk: At the positive electrical block in the engine compartment. That is, if you use an e30 or similar battery cable kit. I don't have a pic of mine, but here's Zeebuck's similar custom poaitive block in his engine compartment. Personally, I prefer the e30 one...

underseatbatt87.JPG

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