'Race' / lightweight battery installations

Discussion in 'Drivetrain, Exhaust and Electrical' started by Grant 302, Dec 6, 2017.

  1. Grant 302

    Grant 302 OPM Spent: $328,347 Moderator

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    Please post yours, just starting the thread with my Braille B2015 install and to highlight some of the minor issues I had. I used their FRP bracket with 8" J hooks, and some reflective battery insulation from Jeg's.

    Before getting started, checked the voltage of the new battery:
    [​IMG]
    Card inside said 13.07V and mfg. date of 11/14/17 so I would have been fine with anything above 12.7 or so.

    Plugged in the cigarette adapter and hooked it up to the charger:
    [​IMG]
    Hooked up the charger on 13.6V power supply mode:
    [​IMG]
    Not needed to change the battery, but good to use if you don't want to clear the KAM and maybe presets and any other stored data.

    Positive terminal came off easily, but the negative side looked like the clamp had really dug into the post. Enough so that prying it off took this ring of lead with it:
    [​IMG]
    [​IMG]

    Insulated the new battery:
    [​IMG]

    Initially I was going to align the clamp on the negative terminal side and re-use the OEM strap shortened for a snug fit:
    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    THEN I STRIPPED THE SPRING NUT WITH THE LONG TIE-DOWN BOLT. :mad:

    So I abandoned the strap and drilled the other side of the tray for the J-bolts.
    Installed:
    [​IMG]

    [​IMG]

    Checking the charge (still through the cigarette port):
    [​IMG]

    I thought I should switch over to the charger pigtail...CRAP! :mad: Forgot to put that in too!

    Attached the positive lug here:
    [​IMG]

    Negative lug under the nut for the terminal clamp:
    [​IMG]

    Charging port zip tied and plugged:
    [​IMG]

    I was putting everything away and I saw these:
    [​IMG]

    And then I realized I could have put the pigtail on the side terminal screw location using these spacers and screws to better hide it. The pigtail would just go with the battery, if you needed to pull it out anyway. CRAP, CRAP, CRAP! :mad: That would have made more sense.

    At that point I was too hangry to bother with changing it, and I already trimmed the positive side rubber cover for the lug. I guess that's where it'll go when I get around to changing the one on the Boss. :D
     
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  2. RES_22

    RES_22 Rob

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    IMG_0156.JPG

    Cut down OE battery box...made cardboard base template and had local shop fab one out of 7mm aluminum. Pretty sanitary.
     
  3. Grant 302

    Grant 302 OPM Spent: $328,347 Moderator

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    Nice and clean. I probably shouldn't have cheaped-out with the J-hook install! I think I'll go that way for the Boss.
     
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  4. ArizonaBOSS

    ArizonaBOSS Because racecar. Moderator

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    Sounds like you had a fun time :)
     
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  5. Grant 302

    Grant 302 OPM Spent: $328,347 Moderator

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    :D Sometimes fun, sometimes *extra* fun!
     
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  6. RES_22

    RES_22 Rob

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    Grant:

    I can scan you a copy of my template... including mounting holes.

    Not sure though if S197 and S550 OE battery boxes are identical.
     
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  7. Grant 302

    Grant 302 OPM Spent: $328,347 Moderator

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    Thanks for the offer, Rob, but I'm sure they're different just looking at your pic above.
     
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  8. VoodooBoss

    VoodooBoss Rick Moderator

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    Nice work gentlemen. To me this makes more sense than relocating the battery to the trunk on a street driven car. Race car is a different story.
     
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  9. Grant 302

    Grant 302 OPM Spent: $328,347 Moderator

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    Agreed. Proximity to the starter is more practical than the weight distribution for street/mixed use. It's good that technology has afforded us so many options.
     
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  10. u00mem9

    u00mem9 TMO Intermediate

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  11. VoodooBoss

    VoodooBoss Rick Moderator

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  12. Black Boss

    Black Boss TMO Addict

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    These batteries are getting so light that it makes relocation to the trunk debatable even for a race car. You end up adding 50% plus of the battery weight in cable. Although both the cable and battery are lower in the car.

    I decided it wasn’t worth the added weight and complexity for my race car build and stuck with the stock location, having previously relocated the Battery on the Boss.

    EDF26E71-84FC-4949-8E04-34639C117B05.jpeg
     
  13. RES_22

    RES_22 Rob

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    Absolutely correct. You have a 6lb battery... pixie dust .

    But relocating even a 10 or 15 lb battery to the trunk returns few sensible benefits when you look at the big picture.
     
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  14. Fabman

    Fabman Project: "Frankenstang"

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    Did this a while back, but thought I'd contribute here.

    Machined up a quick platform mount and hold down from 6061 T6 Aluminum:
    16999027_10155033495658535_6031439037874441699_n.jpg


    Bent up, bead rolled, welded and polished a quickie aluminum box to keep under hood heat at bay.

    16998244_10155035680888535_3491152028644158311_n.jpg


    And VOILA! Securely mounted and protected from engine heat.

    17021499_10155035680883535_7840191804683281913_n.jpg


    Made this one for Kevin's car. @Albino500
    It's similar, but Kevin wanted an open top with an airgap all around. So he he got one. ;)

    18034375_10155208489328535_7148281045441331931_n.jpg
     
    Last edited: Jan 5, 2018
  15. Champale

    Champale TMO Race

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    Gosh those sure are nice! More info please, Fabman! Which Shorai is that? Any feedback on using it?

    I have used Lithium Ion batteries in my motorcycles for years and have been very happy with them. I continue to be curious about using them in my Boss and Focus RS (the Focus battery weighs over 40lbs!?!).
     
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  16. TMSBOSS

    TMSBOSS TMO Addict

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    Has anyone seen a bracket for a light weight battery which has room to mount a pump for trans cooler?
     
  17. Grant 302

    Grant 302 OPM Spent: $328,347 Moderator

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    Some pics of my friend's installation:

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    Do you mean instead of a battery?
     
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  18. TMSBOSS

    TMSBOSS TMO Addict

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    No, with a battery. There appears to be enough room to mount a battery and a small pump for a trans cooler.
    Curious if anyone has attempted this mod.
    Is there room to mount the battery turned 90 deg from the way you have it in the pic? This would likely allow for a pump to fit between the battery and the fender on the battery tray.
     
    Last edited: Jan 7, 2018
  19. Grant 302

    Grant 302 OPM Spent: $328,347 Moderator

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    There could be room, *if* the cables can be manipulated to one side. Pretty sure it could be done by removing or relocating some of the cable/harness ties. I'll try to get measurements tomorrow to confirm room for the battery alone.
     
  20. Grant 302

    Grant 302 OPM Spent: $328,347 Moderator

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    Looks like it could fit clocked 90º. Tray is ~8 1/8" wide/clear (front to rear) and the Braille B2015 is 6.8" long per the spec sheet. Seems like it would be easiest to rotate mine clockwise 90º and move inboard, but the cables would be facing outboard and into the space you'd use for the pump. Just my thoughts. Maybe there's a more creative way to arrange it.
     

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