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Battery Rebuilding: cell module count?

Discussion in 'Gen 2 Prius Main Forum' started by Cryptogram, Jul 30, 2018.

  1. Cryptogram

    Cryptogram Junior Member

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    Have seen postings that you make the paired cell count from the left (HV control module) and other postings that say you start from the fan inlet side. This is for the 2005-2009 Prius. What is the correct way to count cells?
     
    #1 Cryptogram, Jul 30, 2018
  2. SFO

    SFO Senior Member

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    The fan side.

    Do you have codes and a multimeter?
     
    #2 SFO, Jul 30, 2018
    Raytheeagle likes this.
  3. Cryptogram

    Cryptogram Junior Member

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    Yes have OBD2 and Techstream.
    Have good cells ready to go. Just needed to be sure of the count direction.
     
    #3 Cryptogram, Jul 30, 2018
  4. ericbecky

    ericbecky Hybrid Battery Hero

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    Do you have an inch-pound torque wrench for properly tightening the module nuts and HV connection nuts?
    If not, go buy, rent, or borrow one.

    You don't want to be guessing.
    You risk breaking a module post by over tightening or arcing from undertightening.

    Seriously. Just do it.
     
    #4 ericbecky, Jul 30, 2018
    tangerino, TexasGen2Prius, Cryptogram and 2 others like this.
  5. PeddlersDSM

    PeddlersDSM New Member

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    I'm getting into this as well. Cryptogram, I'd love to be in touch and perhaps learn from each other.
    I've got a couple re builds I need to do.
    Is it as simple as ID'ing bad cells by just testing voltage?
    What about energy/capacity - is there a good way to test these cells under load through discharge conditions etc?
     
    #5 PeddlersDSM, Aug 4, 2018
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