E92 M3 Battery Options

Discussion in 'E90 Saloon / E92 Coupe / E93 Convertible M3 (2008-2013)' started by M3NickM3, Jun 11, 2019.

  1. 11 Jun 2019 at 11:16 PM #1
    M3NickM3

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    Just looking at battery options for the E92, currently a 90Ah 900A sits in mine.

    The quotes I'm getting back are getting close to £400, which is way to much IMO.

    I am assuming its has to be a Stop Start AGM, I cannot seem to find a 90Ah one, only 80,85, 110 etc.

    Any suggestions?

    Also can I just pull out the old battery and change it for the new one the code it in? I do not need to worry about the battery being disconnected, radio being disabled or messing up any of the computers logic?
     
  2. 11 Jun 2019 at 11:41 PM #2
    Deep pan

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    Contact costwold BMW on here. I paid ~£180 delivered for mine.
    No issues changing, just disconnect, install the new one and code it.
     
  3. 12 Jun 2019 at 11:00 AM #3
    M3NickM3

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    Yeah just ordered mine from Cotswold, was quoted 240.

    Said cutters price and paid £11 quid more than you, just need to get Carly I guess to program it in.
     
  4. 12 Jun 2019 at 11:11 AM #4
    Twiglet

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    Replaced mine with an Exide EK950 and coded myself with Carly. Battery was £150 delivered.
     
  5. 12 Jun 2019 at 11:48 AM #5
    Ashuk

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    I got this one about a week ago from Euro Carparts. With the discount its £150. Its STOP/Start and everything works fine in the car.
    Took it to my local BMW chap to register it. But I understand its not required to register as there's not much difference between this battery and the original one which was in there. 90AH original. 95Ah aftermarket.

    Original Spec:
    Cold Crank = 900
    AH = 90

    Eurocarparts LION battery:
    Cold crank = 850
    AH = 95


    https://www.eurocarparts.com/ecp/p/...aRZ11ZZ02-9yIHT0F2MniAHDy_EiVBqsaAqKPEALw_wcB
     
  6. 12 Jun 2019 at 1:13 PM #6
    Deep pan

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    You don't need to code it for different Ah, but You still need to register the battery, even if it's the same spec, the car adjusts the charging rate accordingly.
     
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  7. 12 Jun 2019 at 1:35 PM #7
    Ashuk

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    That’s exactly what I assumed. We needed to tell the car it had a new battery.
    However when the guy plugged the computer in...and before he did anything the date had already changed...

    He mentioned it’s happened on a few occasions where nothing needs doing and on some occasions he still needs to code it.
     
  8. 12 Jun 2019 at 1:46 PM #8
    M3NickM3

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    Seems battery prices are constantly changing on a weekly basisi

    Says its £299 now...

    But you still need carly or a computer to do this correct? You cant do it from the car settings menu?
     
  9. 12 Jun 2019 at 1:49 PM #9
    Deep pan

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    Yes bud, still need carly or a computer with the correct software.
     
  10. 12 Jun 2019 at 1:51 PM #10
    M3NickM3

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    Guess Ill grab Carly, will be handy I guess.

    Also how did everyone find manually changing the battery? Looks a bit tight for space, and need to disconnect everything fully as to no break any cabling.
     
  11. 12 Jun 2019 at 4:28 PM #11
    Ashuk

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    That’s right. Carly or a local BMW guy.

    It’s for 299, enter the code ‘flash50’ at checkout and it’ll drop to 150.
    I just tried it.
     
  12. 12 Jun 2019 at 4:29 PM #12
    M3NickM3

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    Ahh fair enough, already ordered one from bmw, 40 quid more but at least its genuine I guess
     
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  13. 12 Jun 2019 at 9:29 PM #13
    gauravM3

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    Did it last month, my advice is to be patient! Also an extension bar will help to reach the nut that’s on the plate which holds the battery in place. The battery is heavy though so expect a good work out !

    It is definitely doable

    https://m.youtube.com/watch?v=hhLaVWPb-bc
     
  14. 12 Jun 2019 at 9:37 PM #14
    Ashuk

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    Took my about 15min to swap batteries over. Easy. But HEAVY.
    Also when putting new battery in be careful of the cabling behind the light fitting. 2 huge plugs. The battery catches them and if you force it’ll snap the plugs and cables.

    Also, DO NOT close the boot till you’ve wired up the battery!
    I learnt the hard way. Got locked out of the boot, no way in! Had to ‘hotwire’ the cabling under the dash to open the boot.
     
  15. 12 Jun 2019 at 9:46 PM #15
    M3NickM3

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    Yeah will get tools ready fi

    Hahahah, brilliant!

    Regarding the Carly adapter, I just picked one up. The guy I bought it from reckons I can save the current settings of the vehicle? Is this correct?

    Would mean I can just make snap of current settings, then once the new battery is installed I can roll back if any setting have been removed from installing the new battery.
     
  16. 13 Jun 2019 at 4:07 PM #16
    M3NickM3

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    Battery arrived this moring, that was quick only ordered it yesterday.

    Just finished changing it over, was a pain but no so bad. Dropping it back in without damaging any of the cables was a job, and screwing that last bolt and plate back in down the bottom was a nightmare. I gave up on that and just left it in the boot, anyone have a way they screwed that back on?

    Coding the battery was easy, Carly is pretty good.
     
  17. 13 Jun 2019 at 4:16 PM #17
    Ashuk

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    You sure plate is going in right way? I did it up side down at first and it wouldn’t go.
    Second attempt was no problem. I used a screwdriver to get get long screws in.
     
  18. 13 Jun 2019 at 4:28 PM #18
    M3NickM3

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    Yeah the bolt was attached to the plate cause of the washer.

    Maybe ill line it up first then trying screwing it in, mines a bolt not a screw, and I the socket set is not magnetic which doesn't help. Its also dark down there, and even with the iPhone torch its hard to see.

    Will have another go later, thanks.
     

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