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Thread: 2016 L494 SDV6 HSE - Auxiliary Battery Tray - Fabrication & installation

  1. #1
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    2016 L494 SDV6 HSE - Auxiliary Battery Tray - Fabrication & installation

    Hi All

    I have been investigating installation of an auxiliary battery into my MY16 SDV6 HSE, mainly to conveniently run a car fridge and lighting without having to worry about draining the main battery.

    After some online research I discovered that there is a lack information readily available in regard to such installations on my model. I suspect the reality is not many RRS owners are likely to have a need. I did contact one auto electrician which has documented installations but after initially telling me they would sell me a tray, they then said they wouldn't - but would sell me a "kit" with everything but the battery for $1,800.

    Based on that I decided to have a crack at fabricating & installing one myself.

    This is not intended to be a step-by-step "how-to" guide - it's more a "how-I-did-it" record which I hope some might find useful.

    In my car, the existing factory tray behind the RHS cargo trim, which I understand held a stop/start battery on earlier models, is in use with some electrical kit fitted on a bolted on upstand. The only option was to fabricate one to install behind the LHS cargo trim.

    I made mine from 1.5mm stainless steel with the main portion of the tray a single piece folded using a pan brake. I've got a separate upstand on the back end which will be used to mount the DCDC charger etc. This is a removable section which can be taken out without having to take the whole tray out.

    If I was to do it again, I'd make it a bit narrower. It's nominally 200mm wide but my lack of folding expertise (first use of a pan brake!) meant it's a bit over. I'd mark it at 190mm and by the time it's folded it should be a bit less than 195mm.

    The height above the floor will depend entirely on exactly where the tray is mounted, as the further forward the higher it has to be to clear the wheel arch. I wanted mine as far back as I could so it's as low as possible. Selection of the mounting bolt positions is also a factor.

    Rather than waffle on here - commentary, dimensions and the like are on the photos.

    Hope you find it useful.

    Cheers

    Craig

    1. 2016-L494-SDV6-HSE-Battery-tray.jpg2. 2016-L494-SDV6-HSE-Battery-tray.jpg3. 2016-L494-SDV6-HSE-Battery-tray.jpg4. 2016-L494-SDV6-HSE-Battery-tray.jpg5. 2016-L494-SDV6-HSE-Battery-tray.jpg6. 2016-L494-SDV6-HSE-Battery-tray.jpg7. 2016-L494-SDV6-HSE-Battery-tray.jpg8. 2016-L494-SDV6-HSE-Battery-tray.jpg9. 2016-L494-SDV6-HSE-Battery-tray.jpg

  2. #2
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    Hi Craig,
    excellent write-up.
    I am thinking of using that space for something too.... but will probably end up cutting a hatch door and keeping some smaller recovery items in there... 12v air compressor, tow rope, 1st aid kit etc (hmmm.... wonder if I can fit a chain-saw in there)
    ...Greg
    Gone - RRS SE SDV6 with Dynamic MY15.5 Yulong White, with LLAMS

  3. #3
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    It's a pretty large space.

    I don't know why JLR doesn't give us a cubby hole to at least make use of it.

    I'm aware that in the models with the rear air-con option, that's where that kit goes but I'm told the trim panels are a different moulding anyway.

    Probably a small chainsaw!

    Cheers

    Craig

  4. #4
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    Thumbs up

    Quote Originally Posted by WizudOfOz View Post
    It's a pretty large space.

    I don't know why JLR doesn't give us a cubby hole to at least make use of it.

    I'm aware that in the models with the rear air-con option, that's where that kit goes but I'm told the trim panels are a different moulding anyway.

    Probably a small chainsaw!

    Cheers

    Craig
    I will need to have a look at that space, as my RRS has the rear AC.

    hopefully it's an empty spot and can utilise for a spare battery.

    I don't have the tools to make the mounting kit, maybe I'll use your measurements and get it made up. See how that goes in finding someone to do it.

    Might make a template using cardboard cutouts and test fit see how it looks.

    Then to find a good battery to put in there, thinking of also running dash camera on constant supply.

  5. #5
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    Quote Originally Posted by el_Davidor View Post
    I will need to have a look at that space, as my RRS has the rear AC.

    hopefully it's an empty spot and can utilise for a spare battery.

    I don't have the tools to make the mounting kit, maybe I'll use your measurements and get it made up. See how that goes in finding someone to do it.

    Might make a template using cardboard cutouts and test fit see how it looks.

    Then to find a good battery to put in there, thinking of also running dash camera on constant supply.
    Dashcam is easy I just tapped off the fusebox hidden behind the glove box. It is likely the space in the rear is empty for you as there isn't many cars with a complete separate aircon in the rear, it was only really for 7 seaters. Mine has separate climate control and heated and cooled seats for the 2nd row passengers but no rear aircon unit.
    Fuji white RRS L494 AB

  6. #6
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    Quote Originally Posted by Geedublya View Post
    Dashcam is easy I just tapped off the fusebox hidden behind the glove box. It is likely the space in the rear is empty for you as there isn't many cars with a complete separate aircon in the rear, it was only really for 7 seaters. Mine has separate climate control and heated and cooled seats for the 2nd row passengers but no rear aircon unit.
    Fuse box behind the glove box? Any photos of that and how to remove?

    I found a workshop manual but not that easy to search through it.

  7. #7
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    Quote Originally Posted by el_Davidor View Post
    Fuse box behind the glove box? Any photos of that and how to remove?

    I found a workshop manual but not that easy to search through it.
    If you look in the owners manual it describes how to access the fuse box. You can download the owners manuals from Topix but only one section at a time.

    1. To access the upper and lower luggage
    compartment fuse boxes, open the rear
    tailgate. See 8, OPENING AND CLOSING
    THE POWERED TAILGATE Remove the first
    access panel. Grasp the top of the panel and
    pull sharply. A label on the rear of the
    access panel shows the circuits protected
    and the fuse locations.
    • When refitting the access panel make
    sure the locating/securing pegs are
    aligned with their respective holes
    before pushing the panel fully home.
    2. To access the passenger compartment fuse
    box open the glove box. See85, STORAGE
    COMPARTMENTS Firmly press the top of
    the support stay at each end, and lower the
    glove box into the foot well. A label on the
    rear of the glove box shows the circuits
    protected and the fuse locations.
    3. To access the engine compartment fuse box
    remove the under bonnet cover. See210,
    UNDER BONNET COVERS -
    REMOVALRelease the clip at each end of
    the fuse box cover.
    4. Lightly lift up the leaf screen panel to allow
    the removal of the fuse box cover.
    5. Remove the fuse box cover. A label on the
    inside of the cover shows the circuits
    protected and the fuse locations.
    Fuji white RRS L494 AB

  8. #8
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    Hi Craig, beautiful job for your battery holder !
    Did you post anywhere here how and where you wired your battery to the electric system of your car ?

    Thanks

  9. #9
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    Quote Originally Posted by georgien View Post
    Hi Craig, beautiful job for your battery holder !
    Did you post anywhere here how and where you wired your battery to the electric system of your car ?

    Thanks
    Hey mate

    I posted here:
    2016 L494 SDV6 HSE - Auxiliary Battery - Part 2 - Charger installation
    about how I wired everything up.

    I didn't include anything about the connection to the battery under the spare wheel as that's pretty straightforward.

    Cheers

    Craig

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