Welcome to ZRoadster.org - BMW Z1 Z4 Z8 Z3 Forum and Technical Database

If you want to join in with the discussion, and see the areas which are available only to members then sign up now!

  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Main Battery renewal - rating?

Discussion in 'Z3 Roadster & Coupé' started by jonco, Jun 13, 2014.

  1. jonco

    jonco Zorg Guru (III)
    Supporter British Zeds The M44 Massive

    Joined:
    Dec 6, 2011
    Messages:
    1,334
    Likes Received:
    669
    Trophy Points:
    149
    Location:
    Chester
    Model of Z:
    '98 1.9 Auto
    Thinking of treating the Zed (M44) to a new battery on a preventative maintenance basis as there are a few sales on at moment.

    Current battery was fitted by previous owner over 4 years ago. It's a Banner 55 Amp/h - 420a - 042 and struggles if the car is not used for ~a week ( which sadly happens too often) or when doing diagnostic checks unless quickly put on charge.

    Owner's handbook states 70 Amp/h but I have read this is very over-rated.

    Any advice please?
     
  2. t-tony

    t-tony Zorg Expert (I)
    Supporter British Zeds #ZedShed

    Joined:
    Dec 31, 2013
    Messages:
    31,103
    Likes Received:
    14,705
    Trophy Points:
    220
    Location:
    Torksey Lock,Lincoln, England
    Model of Z:
    Z4 3.0 Auto
    I can tell you from personal experience that Banner batteries are at the budget end of the market. They used to sell them where I work and we had lot's of warranty claims against them. Personally I would opt for a premium brand of battery for reliability's sake alone. There is nothing in this whole world more useless than a car which won't start.:(
     
    • Like Like x 1
    • Agree Agree x 1
  3. jonco

    jonco Zorg Guru (III)
    Supporter British Zeds The M44 Massive

    Joined:
    Dec 6, 2011
    Messages:
    1,334
    Likes Received:
    669
    Trophy Points:
    149
    Location:
    Chester
    Model of Z:
    '98 1.9 Auto
    Thanks Tony - I had never heard of them but suspected they were `budget'. I'll willing to go premium but what rating?
     
  4. t-tony

    t-tony Zorg Expert (I)
    Supporter British Zeds #ZedShed

    Joined:
    Dec 31, 2013
    Messages:
    31,103
    Likes Received:
    14,705
    Trophy Points:
    220
    Location:
    Torksey Lock,Lincoln, England
    Model of Z:
    Z4 3.0 Auto
    Ask for Exide or Bosch for fitment for your car, see what they offer and compare. I will see what prices I can get in Lincoln tomorrow if that would help?;)
     
    • Like Like x 1
  5. Brian H

    Brian H Zorg Guru (V)
    British Zeds Scottish Zeds

    Joined:
    Dec 5, 2011
    Messages:
    3,480
    Likes Received:
    2,523
    Trophy Points:
    195
    Location:
    Killin
    Model of Z:
    E36/7 3.0i - E85 Z4///M
    I would be inclined to stick with the recommendation in the handbook, it is a right royal PITA when the battery goes flat after a few minutes with the boot open (boot light on)
     
    • Thank You! Thank You! x 1
  6. jonco

    jonco Zorg Guru (III)
    Supporter British Zeds The M44 Massive

    Joined:
    Dec 6, 2011
    Messages:
    1,334
    Likes Received:
    669
    Trophy Points:
    149
    Location:
    Chester
    Model of Z:
    '98 1.9 Auto
    Thanks for offer - we are off to South of France in the Zed next week so I was looking to jump in on Euro parts sale as we have a local depot. Battery is ok at moment but sod's law will say that now I have asked the question it will fail!!!
     
  7. t-tony

    t-tony Zorg Expert (I)
    Supporter British Zeds #ZedShed

    Joined:
    Dec 31, 2013
    Messages:
    31,103
    Likes Received:
    14,705
    Trophy Points:
    220
    Location:
    Torksey Lock,Lincoln, England
    Model of Z:
    Z4 3.0 Auto
    Absolutely Brian. Mine has a Drive Master battery, again at the budget end of the market but I've had no problems at all with it. it is rated at 54Ah and CCA 525 ( cold cranking amps) in case you didn't know what that was. This would have been supplied by our local Andrew Page outlet.
     
  8. zedonist

    zedonist Guest

    its the CCA you want as high as possible at the recommended Amp hours, i am running a Bosch S6, never let me down, 70Ah 760CCA
     
    • Like Like x 1
    • Dislike Dislike x 1
  9. Rev

    Rev Zorg Guru (IV)
    Supporter

    Joined:
    Feb 18, 2012
    Messages:
    710
    Likes Received:
    584
    Trophy Points:
    152
    Location:
    The Shire of Lincoln, UK
    When you've got it buy yourself a battery conditioning charger and get in the habit of putting it on permanent charge.

    Keeps the battery at a perfect charge rate and in first class order and so will last much longer.

    :)
     
    • Like Like x 3
  10. badman gee

    badman gee Guest

    Yes the CTEK's are excellent!
     
    • Agree Agree x 1
    • Thank You! Thank You! x 1
  11. Mint

    Mint Zorg Expert (I)
    Supporter British Zeds East Anglian Crew

    Joined:
    Sep 23, 2012
    Messages:
    9,087
    Likes Received:
    6,126
    Trophy Points:
    212
    Location:
    Staffordshire, UK
    Model of Z:
    1st Z3 | 2.2 | Sport | Individual 2nd - Z3 | 3.0 | Sport
    I bought a Bosch S4007, 72Ah, 680CCA - been a great buy:)
     
    • Thank You! Thank You! x 1
  12. jonco

    jonco Zorg Guru (III)
    Supporter British Zeds The M44 Massive

    Joined:
    Dec 6, 2011
    Messages:
    1,334
    Likes Received:
    669
    Trophy Points:
    149
    Location:
    Chester
    Model of Z:
    '98 1.9 Auto
    Thanks again for comments and advice guys. I've ordered an Exide 096 - 77Amp/h with 760CCA from Eurocarparts with 4 year guarantee - due to be delivered tomorrow.
    Will look at the charger later - problem there may be stopping the other half from driving off with it still connected!!!!=))
     
    • Like Like x 2
    • Funny Funny x 1
  13. zedonist

    zedonist Guest

    Watch it does not flip the car over when cranking ;), good choice........
     
    • Funny Funny x 2
  14. jonco

    jonco Zorg Guru (III)
    Supporter British Zeds The M44 Massive

    Joined:
    Dec 6, 2011
    Messages:
    1,334
    Likes Received:
    669
    Trophy Points:
    149
    Location:
    Chester
    Model of Z:
    '98 1.9 Auto
    Fitted - POW what a difference! Didn't quite flip the car but I think I heard the starter exclaim WTF:)
     
    • Like Like x 5
    • Funny Funny x 1
  15. zedonist

    zedonist Guest

    It makes all the difference doesn't it!
     
    • Agree Agree x 1
    • Disagree Disagree x 1
  16. Rev

    Rev Zorg Guru (IV)
    Supporter

    Joined:
    Feb 18, 2012
    Messages:
    710
    Likes Received:
    584
    Trophy Points:
    152
    Location:
    The Shire of Lincoln, UK
    There's nothing worse than wondering whether or not a car will start and be reliable. Strange how such a small thing like changing a battery will improve your enjoyment of a car.

    :)
     
    • Agree Agree x 3

Share This Page