My module rebuilding process.

Discussion in 'Gen 2 Prius Main Forum' started by Prius92, Jul 28, 2022.

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  1. Prius92

    Prius92 Active Member

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    Figured out what happened, one of the alligator clips, the wire strands inside broke off, didn't realize it and only 1-2 tiny strands were holding it. So the charger didn't really charge module 23 that well because a lot of current would of been lost as resistance through the poor condition.
     
    #21 Prius92, Aug 7, 2022
  2. Prius92

    Prius92 Active Member

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    Welp, that didn't fix it. In fact capacity fell further from 3194 to 3069, so I think this module is toast.
     
    #22 Prius92, Aug 8, 2022
  3. tracy ing

    tracy ing Active Member

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    The rep for hitec usa has yet to reply to my interrogatory on this charger.


    The manual states the charger can determine internal resistance, but it does not state the method used, which affects the interpretation of the results..

    Is it injecting an AC voltage of some frequency eg 1,000 cycles and using that

    or

    Is it using the DC load method with the charger placing one or more loads on the cell for a second or so then executing math on the resulting voltage readings to determine the resistance

    both methods are valid, but yield dramatically different results, one must know the method to interpret the results

    Thanks
     
    #23 tracy ing, Aug 10, 2022
    SFO likes this.
  4. Sean2005Gen2CA

    Sean2005Gen2CA Member

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    Thank you for posting this, I was worried I had ruined my whole pack because they did swell up after a charging cycle with prolong charger / discharger but i cooled them off in the refrigerator and they have right sized themselves after several hours, they are back to fitting together again as they did originally

    feeling fortunate there was not a larger problem and to hear that they likely will perform as intended without issue
     
    #24 Sean2005Gen2CA, Jan 12, 2026 at 11:36 PM
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