Reconditioning Battery Cells just to get it started.

Discussion in 'Gen 3 Prius Main Forum' started by not_a_prius, Dec 11, 2024.

  1. not_a_prius

    not_a_prius Junior Member

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    I got 40 Cells the same exact ones that are in a Prius
    P0A80 High module Resistance

    What are the Best settings

    it's actually a Chevy Tahoe hybrid so these cells are SUPER worn out

    We got a NO load voltage of 7.5(x40=300volts) pretty much across the broad.. but i can't get the engine started it doesn't even spin over (it tries though)

    i plan to get a New battery by Feb-Mar

    Lowest Tested module so far was 7.5v to fully discharged only 98mAh 4.8v(it has already recovered to about 800mah via cycling it about 15 times..)


    Using 3.0amps Charge rate
    and 1.0amps discharge

    cut off at 6 volts for the other modules x5 cycles


    Should I be concerned that the cells are NOT getting Warm/Hot or warm when charging them?
    Current Temp inside is 75F
    Not enough amps charging?
     
    #1 not_a_prius, Dec 11, 2024
    Last edited: Dec 11, 2024
  2. bisco

    bisco cookie crumbler

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    if the engine is spinning over, isn't the no start problem something besides the battery?
     
  3. 2greypriusesprii?

    2greypriusesprii? New Member

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    I just did the same for my non-starting Prius a few days ago:

    Advice for moving a dead Prius. | PriusChat

    All my cells were 7.5v but two were under 1v. I charged them all to 8.2v, which was enough to get the car home.

    If your car is trying, but not starting, I would look at ICE issues. First, is there gas? What trouble codes?
     
  4. not_a_prius

    not_a_prius Junior Member

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    Well one of the Cells only had 98mAh from 7.5 volts discharged to 0.8v/cell(4.8V) i aggressively cycled it and it's at 890mAh now

    there is something wrong with the engine but it was starting before

    Winter showed up it dropped to about 28F and then didn't start

    The battery is unknown age(appears someone was inside already in the past )

    cell code 22914k0782M
     
    #4 not_a_prius, Dec 17, 2024
    Last edited: Dec 17, 2024