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Battery upgrade

Discussion in 'Electrical Systems' started by amolmane, Oct 22, 2010.

  1. asimpleson

    asimpleson Esperto

    Messages:
    2,998
    Heptanesia
    Linea 1.3
    Yes Bhai technically it can, but that's not how it works, approximately half the power is used to charge the battery, for a 60AH battery as suggested you will need atleast a 120AH and better still 140-150 Ah to compensate for efficiency loss.
    1 person likes this.
  2. bhai

    bhai Esperto

    Messages:
    1,183
    Ahmednagar
    Grande Punto 1.3 90 HP
    Purchased Exide 12V 60 Ah Matrix DIN60 today.
    It fits without any issue in the bracket.
    After fitting DIN 60 still 1/2 inch is space available.

    Fitted & gave first crank.
    OMG! Only clicking noise of starter relay. No movement of starter.:eek:

    Done 2nd try. Engine cranked but in lazy manner.

    Kept idle for 10 min.& took TD. I will check at morning & update again.

    Checked battery voltage before cranking. It showed 13.3 V

    After running for some km again checked charging voltage
    With load it showed 13.2 V Without load it showed 13.4 V

    Battery is manufactured in Dec.2013. Means it was idle for 3 months

    I hope my starter & alternator is OK. Please comment.
    Last edited: Mar 4, 2014
  3. l13mjd

    l13mjd Amatore

    Messages:
    182
    Ahmedabad
    It isn't right. Experts will give statistics as to why, but get battery changed again. 13v without load is not right. Healthy and good batteries go 14.4v.


    Sent from my iPhone using Tapatalk
    Last edited: Mar 4, 2014
  4. bhai

    bhai Esperto

    Messages:
    1,183
    Ahmednagar
    Grande Punto 1.3 90 HP
    But on battery Exide has mentioned Operating voltage is 13.7 V.
    14.4 volt mentioned by you is max. charging current volt.

    Max. output of alternator is 14.2 Volt.
  5. asimpleson

    asimpleson Esperto

    Messages:
    2,998
    Heptanesia
    Linea 1.3
    Bhai, in a situation as yours it is best to ask the re-seller to give a fully charged replacement battery for test, and try cranking on it in his presence.

    If problem persists, the problem could be any, the battery, starter or alternator, however in rare cases it can also be both or maybe just a relay/solenoid issue. However for a brand new battery it indicates that the problem could be more of battery and/or alternator. Do post further as you find the fix.
    Last edited: Mar 4, 2014
  6. bhai

    bhai Esperto

    Messages:
    1,183
    Ahmednagar
    Grande Punto 1.3 90 HP
    I used car for 150 km after fitting new battery.
    After going 75 km I checked battery charging voltage. It is 13.7 Volt.

    But starter motor is spinning in lazy manner.
    Charging voltage without load 13.7 & with full load of accessories is 13.2.
    Means alternator is also not giving proper output.
    As per FIAT & Exide charging voltage should be between 14.2 to 14.4 volt without load.

    I checked charging voltage of one of my relative's 2009 1.4 Linea. It is giving 14.4 volt.

    I may get alternator replaced in ext. warrantee. But possibility of replacement of starter is in doubt.
    Coz car should replicate starter problem in front of FASS.
    Last edited: Mar 19, 2014
  7. asimpleson

    asimpleson Esperto

    Messages:
    2,998
    Heptanesia
    Linea 1.3
    Good that your alternator is in warranty. Alternatively, you just need to change the IC/rectifier on the alternator as they call it, if repairs are needed. For starter try a good battery from dealer to rule out starter issues. They do help out to check such issues.
    Last edited: Mar 19, 2014
  8. bhai

    bhai Esperto

    Messages:
    1,183
    Ahmednagar
    Grande Punto 1.3 90 HP
    New alternator is also giving output of 13.7 (Without load):eek:

    Valeo is the supplier of alternator. Is it any defect in supply of alternator ?

    Why FIAT is not using quality alternator of Magnetti-Marrelli ?

    I used alternator of Magnetti-Marrelli for 9 years to my 999 c.c.
    FIRE Fiat UNO without any problem. It never encountered problem of battery charging.
    Last edited: Apr 12, 2014
  9. asimpleson

    asimpleson Esperto

    Messages:
    2,998
    Heptanesia
    Linea 1.3
    How is the starter now, is it replaced or still spinning slow. Yes lots of components including clutch etc. are from Valeo. Magnet Marelli ones where superb and very rarely developed issues. I have one in the Siena D also. Changing IC/Rectifier solves problem of alternator always.

    If charging voltage is not above 14.4 for a new battery and alternator, that could be investigated. But meanwhile the battery will not have issues otherwise till you find the why it is not giving efficient output.
  10. bhai

    bhai Esperto

    Messages:
    1,183
    Ahmednagar
    Grande Punto 1.3 90 HP
    Rechecked charging voltage as soon as the engine started at cold start.
    It showed 14 V. But dropped after some time again to 13.7 Volt.

    I think this is due to charging of battery. Alternator minimises charging current as per rise in charging.

    I compared charging of my SX4 DDiS.
    On full load of electric accessories alternator of SX4 keeps charging on 14 V @2000 RPM
    But alternator of my 90 HP is not maintaining charging voltage on full load to 14 Volt.

    I checked charging voltage of one Fiat 1.4 linea of our relative. Alternator of 5 year old 1.4 linea gives 14.2 at full load.
    But my new alternator is not giving charging current of 14.2 even on new battery. :confused:
    Last edited: Apr 25, 2014

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