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Thread: Battery

  1. #1
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    Default Battery

    Anyone ever wonder why our the batteries on the VAG / Golf / S3 cars are soo big...? Too me its the most logical spot to shave some weight for a smaller dry cell and what not... just very odd how the manufacture focuses alot on weight reduction yet use such a large batt...

    Thoughts / insights?

    Anyone know how heavy the OEM battery is I'd wager at least 25kg.
    MY17 8V II S3 Sedan | Audi Exclusive Sepang Blue S Performance Pack 1 Panoramic Roof Matrix Lights Black Optics Ext Mirror Pkg

    2012 Golf R 2002 Silvia 200sx S15

  2. Default

    Turbos eat batteries.

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  3. #3

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    Quote Originally Posted by SnowDoggyDogg View Post
    Turbos eat batteries.

    Sent from my SM-G935F using Tapatalk
    how so?

    stop/start, and the multitudes of electronic systems to a LOT of load on batteries.

  4. Default

    Quote Originally Posted by MickyD View Post
    how so?

    stop/start, and the multitudes of electronic systems to a LOT of load on batteries.
    I'm just being cheeky - only BMW turbo cars eat your batteries due to retarded engineering!
    Massive batteries are for all the electrics and for cold climate vehicles. Considering country of origin for these it's quite natural needing one with massive cold cranking amps.

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  5. #5
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    Baffled why they just don't use dry cell they can generally hold charge and work in cold temps...
    MY17 8V II S3 Sedan | Audi Exclusive Sepang Blue S Performance Pack 1 Panoramic Roof Matrix Lights Black Optics Ext Mirror Pkg

    2012 Golf R 2002 Silvia 200sx S15

  6. #6

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    Some of the comments display a bit of a lack of understanding about the role of the battery in the vehicle environment. I don't have enough time to write up all the considerations that a designer must meet but suffice to say, other than cost, reliability is paramount. Feel free to replace your wet cell battery with a dry cell, they are available, but be prepared to both pay and walk at this stage of evolution.
    C5 RS6: Sportec, Milltek & Wagner -- B5 RS4 : tastefully modified -- Audi 1.8 quattro 132 Kw -- UNIMOG 404 TLF8

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    Korny (February 15th, 2018)

  8. #7

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    Quote Originally Posted by IchBautAuto View Post
    Some of the comments display a bit of a lack of understanding about the role of the battery in the vehicle environment. I don't have enough time to write up all the considerations that a designer must meet but suffice to say, other than cost, reliability is paramount. Feel free to replace your wet cell battery with a dry cell, they are available, but be prepared to both pay and walk at this stage of evolution.
    A year later! Sorry...

    What about the Braille range of lightweight batteries, such as the B3121.
    Has anyone installed one of these?



    AUDI S3 8V SEDAN (MY15)
    - Misano Red w/Black Optics + Perf Pack + Pano Roof + US grille
    - ABT ECU tune & DP | VWR CAI | TMD | HiFlo bend | Intake hose | GFB DV+
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    - ECS Tuning 2 piece rotors + EBC Red Stuff pads (fr & rear)
    - ECS Tuning oil catch can kit
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  9. #8
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    Quote Originally Posted by Korny View Post
    A year later! Sorry...

    What about the Braille range of lightweight batteries, such as the B3121.
    Has anyone installed one of these?
    Im a bit dubious of the Lithium Ion batteries still.... there are always issues of thermal runaway occurring in one form or another (look at the 787 Boeings even), But I DO admit they are great for their Capacity vs size/weight compared to a normal lead acid.

  10. #9

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    Quote Originally Posted by Richo7502000 View Post
    Im a bit dubious of the Lithium Ion batteries still.... there are always issues of thermal runaway occurring in one form or another (look at the 787 Boeings even), But I DO admit they are great for their Capacity vs size/weight compared to a normal lead acid.
    AGM not Lithium. I canít justify $1,300+ for a battery. The 21lbs Braille variant seems to be a similar capacity to the OE but Iím far some an expert on such matters...


    AUDI S3 8V SEDAN (MY15)
    - Misano Red w/Black Optics + Perf Pack + Pano Roof + US grille
    - ABT ECU tune & DP | VWR CAI | TMD | HiFlo bend | Intake hose | GFB DV+
    - H&R Sports + spacers + RSB.
    - ECS Tuning 2 piece rotors + EBC Red Stuff pads (fr & rear)
    - ECS Tuning oil catch can kit
    - 034 Motorsport - rear subframe mounts / dog bone insert
    - Cobra resonated catback s/s exhaust
    - Opticoat Pro treatment exterior & interior
    - Wagner FMIC + Spulen charge pipes
    - P3 Cars gauge + Dragy GPS

  11. #10

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    Quote Originally Posted by morph. View Post
    Anyone ever wonder why our the batteries on the VAG / Golf / S3 cars are soo big...? Too me its the most logical spot to shave some weight for a smaller dry cell and what not... just very odd how the manufacture focuses alot on weight reduction yet use such a large batt...

    Thoughts / insights?

    Anyone know how heavy the OEM battery is I'd wager at least 25kg.
    they might be big - but i still only got 2 years out of mine...
    S3 Sportback MY15 - Floret Silver - S tronic - nothing else

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