Mixing batteries with different CCAs

Discussion in 'Trucks [ Eighteen Wheelers ]' started by hatlesstrukr, Nov 4, 2012.

  1. hatlesstrukr

    hatlesstrukr Light Load Member

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    Is it ok to mix batteries that have different cold cranking amps? Owner of the truck says that it needs just 2 good batteries for it to start up. The truck's current set were made in February 2011 and look a little bloated on the sides. Pic related...

    ImageUploadedByTapatalk1352044153.271324.jpg
     
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  3. Superhauler

    Superhauler TEACHER OF MEN

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    NOPE!! if you change just half of them with new and half with old you will more than likely cook the new ones from over charging. i allways replace all 4 at same time. it's just comonsence. the other way is being cheap minded but can cost more in the long run.
     
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  4. hatlesstrukr

    hatlesstrukr Light Load Member

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    Now knowing I need all 4, do I need to get a set with the same CCAs or can I use higher amp batteries like 900 CCA?
     
  5. bender

    bender Road Train Member

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    Mixing batteries can also overwork the alternator and shorten it's life, so it's a double whammy. Always replace batts in sets of the same type and age. Old and new batts within one group just don't get along well together.
     
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  6. Superhauler

    Superhauler TEACHER OF MEN

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    cute kittens why does the little one have boxin gloves on?
     
  7. Heavyd

    Heavyd Road Train Member

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    They need to be the same CCA. Batteries with different CCA ratings mean they can discharge more or less current, this also mean they recharge at different rates. Not good when mixed in a set with others with different ratings. Worst thing you can do is start to get cheap and replace only two in a set of 4. Replace all at once with same rating.
     
  8. bender

    bender Road Train Member

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    That's my oldest little girl with her new kitty right after getting declawed.
     
  9. hatlesstrukr

    hatlesstrukr Light Load Member

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    Napa parts in Wrightstown, NJ has the batteries I need but I doubt a taxi service would want to help me haul the 4 batteries I have to do a core exchange.

    Also, I don't see any kittens posted here. :(
     
  10. bull hauler

    bull hauler Medium Load Member

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    Bet they will if pay for the trip
     
  11. hatlesstrukr

    hatlesstrukr Light Load Member

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    Jan 30, 2010
    El Paso, TX
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    Called a taxi cab and they helped me get to the parts store for the batteries. Installed them and the truck started up instantly. I felt like dr. frankenstein seeing his creation come to life when the engine turned over after being off for 3 days.

    New batteries are 950 CCA with a 36 month warranty from Napa and they were $110 each compared to Petro's price of $181.

    :D
     
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