2010 hybrid battery voltage question

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Vulcan18, May 21, 2025.

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  1. Vulcan18

    Vulcan18 New Member

    Joined:
    May 21, 2025
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    Location:
    Georgia
    Vehicle:
    2010 Prius
    Model:
    III
    I am a newbie Prius and got the dreaded Triangle of death and code P0a80. I downloaded Dr. Prius and checked the battery voltages from the app. It was obvious it was block 1 giving the main issue. Attached is the readings directly from the app. Do these voltages mean the blocks are good or are they over charging? I just got this car and since i got it the code has been present. The second module has blown and did not run any other diagnostics on the car. Can I replace modules one and two or do i just need to replace the whole battery? I sent 800 on the car and really don't have the money to just replace the battery without causing a huge strain on finances.
     

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    #1 Vulcan18, May 21, 2025
  2. Jonny23blaze

    Jonny23blaze Junior Member

    Joined:
    Dec 17, 2019
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    Location:
    San Diego
    Vehicle:
    2010 Prius
    Model:
    Two
    Before buying anything, you should do a battery reconditioning process.
    I do have the prolong battery deluxe combo, charger and discarger. I am currently doing this process at the moment (may 26, 2025) and I am having an issue with the discharger is showing .000 amps on the discharging cycle, I do not know what that could be? Maybe the discharger is broken, hopefully somebody reads this thread.
     
    #2 Jonny23blaze, May 26, 2025 at 4:09 PM
  3. Brian1954

    Brian1954 Senior Member

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    Jan 31, 2021
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    Location:
    South Central PA, USA
    Vehicle:
    2011 Prius
    Model:
    III
    Open the discharger and check to see if the small fuse is still good. If I remember correctly, when the fuse blows, the discharger will show .000 amps on the meter.
     
    #3 Brian1954, May 27, 2025 at 1:26 PM
  4. ASRDogman

    ASRDogman Senior Member

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    Location:
    Florida
    Vehicle:
    2010 Prius
    Model:
    Two
    Time for a Sodium battery!
    Playing wack a mole will only cost you money and time.

    Since you are having such issues, not worth it....

     
    #4 ASRDogman, May 27, 2025 at 3:19 PM
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