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Battery Question again sorry

Discussion in 'A3/S3/Sportback (8P Chassis)' started by dantdi, Oct 16, 2012.

  1. dantdi
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    dantdi ...

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    Hi, All

    I'm looking to change my battery in my A3 2.0 tdi 170 2007.

    I want to buy the Varta Silver Dynamic 110 Battery (F18) with 85 AH and 800 Cold cranking amps.


    My Question is will the car's
    electrical system be ok with 85 Ah?
    Will the
    alternator able to charge the 85 Ah battery fully?

    Varta website have it listed for my car but want to make sure
    ProductFinder - VARTA Automotive

    The battery in the car at moment is only 61 Ah 330 cold cranking.

    Also i have LED's inside and out could the higher Ah's cook the led's

    Thanks
    Dan
    #1
  2. MrLapou
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    MrLapou Well-Known Member

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    It's the voltage that'll 'cook' a led.
    I'm surprised the battery is only 61Ah. Thought diesels had higher amperage due to the use of glow plugs.
    You'll be ok with the higher Ah battery as long as it will physically fit in the battery box/compartment. It'll just a bit longer to charge up from new.
    Last edited: Oct 16, 2012
    #2
  3. audicruiser
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    audicruiser Audi Heaven

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    The Ah rating of a 170TDi alternator will be able to cope with a 85Ah battery. I am sure the rating of our 2010 170 is 140Ah...
    #3
  4. _G_
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    _G_ Member

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    Varta is some serious shiz... good choice!!!
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  5. Ash187
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    Ash187 Audi Retrofitter

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  6. SWILKO
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    SWILKO Member

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    E44 fits no problem mate, done it on mine a few weeks ago. Resolved the ESP fault issues and seems much better and stable at starting, I would say it took a wee while to get it fully charged though.

    S
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  7. Ash187
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    Ash187 Audi Retrofitter

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    i drive about an hour to work so that should charge it up properly for me. i currently have the battery in the house as i havent had time to fit it but i could always just plug it up to my indoor battery charger and get it fully charged now, you think i should do that?
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  8. SWILKO
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    SWILKO Member

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    It should come fully charged but it wouldn't do any harm to give it a full charge on the deck so to speak. At least you know where you are with the battery and can monitor it from there.

    S
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  9. Ash187
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    Ash187 Audi Retrofitter

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    good thinking...

    now back to the OP, like i said im not sure that the battery you have mentioned will fit your car. maybe get the dimensions and see if your current battery box will take it?
    #9
  10. dantdi
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    dantdi ...

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    Your right!
    I just been down to
    Auto electrician where was going to get the battery and it's one hell of a big bugger!
    Way to big for the A3.

    #10
  11. dantdi
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    dantdi ...

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    Looking like it will be the E44 then!
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  12. Ash187
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    Ash187 Audi Retrofitter

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    the link i posted before seems to be the best price around, and its next day delivery (at least thats what happened with mine)
    #12
  13. dantdi
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    dantdi ...

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    Thanks Ash!
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  14. Ash187
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    Ash187 Audi Retrofitter

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    no probs mate,

    where abouts in Kent are you? Im just 10 mins from Bluewater
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  15. dantdi
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    dantdi ...

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    I'm Nr Folkestone
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  16. Ash187
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    Ash187 Audi Retrofitter

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    ahh pretty far then
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  17. dantdi
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    dantdi ...

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    About 45 min to bluewater for me.
    Just order one them battery's so should get it tomorrow.
    #17
  18. Ash187
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    Ash187 Audi Retrofitter

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    ahh so not too far then! i hardly ever go that side of kent... up in London all day with work
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  19. dantdi
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    dantdi ...

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    Well Fitted mine yesterday. Only little thing was i couldnt get negative fully down on the battery post sticky up by about 3mm.
    #19
  20. Ash187
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    Ash187 Audi Retrofitter

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    loosen the bolt a little more and knock it on lightly with a hammer :)
    #20
  21. A3-8PA
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    A3-8PA Member

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    Hi,

    Is it safe to replace old battery (61 Ah, 540A CCA) with "E44 Varta Silver Car Battery" (577400078) (77 AH and 780 Cold Cranking Amps)?

    The old battery in my A3 1.9Tdie 105bhp - 2008 is 240mm in length where as the new one is 278mm. I checked battery box, seems around 292mm.

    Many Thanks,
    #21

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