1996 328i e36 relocating the battery

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  1. 1996 328i e36 relocating the battery 
    #1
    ron
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    Just wondering what the do's and donts are of relocating the battery, i want to put it behind the passenger seat, obviously it would be mounted correctly but a few questions, does it need to be boxed and if so what about ventilation, also with ventilation does it matter that it would be close to passengers, also because of it being relocated should the worse happen on the road and the emergency services tend to diconnect the battery would i need to provide easy access, to it and/or stickers to say where it is, would i need an isolater switch for it? this isnt for trackday use either else i would just throw an isolater in and be done with it, it has to be road legal and safe.
     
     

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    Quick question(s) - Why?

    Do you need to make room to put something?

    What's wrong with with the battery where it is now?

    I can see a lot of hard work putting the right cables in and not making people say "Yeah, thanks for the lift home,


    Oh, nice battery under my feet"
    Clear your heads and get ready to run.
    Remember, the best times are yet to come.
     
     

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    its going behind the passenger seat and i can use the original cables that run the length of the car, the battery is being repositioned due to what project im doing but i dont want to make plans to relocate it now incase its not allowed or i will run into problems later.
     
     

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    You will notice that there is already an existing ventilation tube running towards the outside from your boot.
     
     

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    ron
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    dosnt really answer my question tho, i just need to know if its allowed behind the passenger seat for everyday use, if so are there any limitations or regulations i need to adhere to
     
     

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    TBH ron, I haven't come across any safety regulations except for having good ventilation, so I guess you might be ok if you enclose and secure it properly.
     
     

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    Ok well ill tell you what i plan on doing and see if it sounds right, or see if you think i may be doing something wrong...

    the battery is going to be housed in a secure box with a ventilation tube running from the rear of the box to the rear of the car, im going to use the original cable that runs the lenght of the car and reroute it to the passenger side of the dash and into the dsignated area along the footwell, ill make a little housing for the cable to run along just inside the door where the lip is so that the carpet will cover it so it retains the factory look, the idea is when your in it you wont feel a huge buldge and you wont notice it due to the carpet, there will be an isolater switch somewhere on the passenger side of the dash, i might locate it next to the bonnet release for emergency services, idea is they go for the bonnet release and find the isolater there, im also planning on gettin a sticker made up to indicate the new position of the battery.

    i just dont want to goto this effort just for it to be wrong and have to move it as obviously i can move it there in the first place and save time and money.
     
     

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    The battery doesn't come into the MOT so you will be OK regarding that.

    What are you doing to the boot????
     
     

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    #9
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    I'm confused but here's my opinion.

    Ventilation, you want as short a pipe as possible. Drill a hole in the floor and seal it well.

    You do not want to run the power wire down the passenger side as the complete vehicle wiring loom runs down that side and you will end up with diabolical interference if using an audio system. I would run it's original route until it gets to the back of the rear foot well then kick it across. Also remember that the earth wire needs to be under one foot in length.

    Are you going to let us know what you are actually doing that requires the relocation of the battery??? You don't need to go to that extent to fit a dead body in the boot

    If we know the reason then we may be able to offer a much more logical approach
     
     

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    #10
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    the estate is getting chopped, shes gunna be a pickup, wether this works or not im going for it, just trying to work out what needs to be done before i go gungho with a stihl saw, for the moment im not planning on getting it back on road so im not that concerned about it but i still want everything to comply with laws just incase i actually get that far, ive still got my e34 and im going to look for a 328coupe next year so if this fails its no biggie, least ill have a cool lookin car on my drive
     
     

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