Dr. Prius Data Interpretation

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by PriusII&C, Aug 17, 2025 at 12:50 AM.

  1. PriusII&C

    PriusII&C Active Member

    Joined:
    Oct 15, 2013
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    Location:
    San Jose, California
    Vehicle:
    2012 Prius
    Model:
    II
    Monitor.jpg Default.jpg Override.jpg
    I used Dr. Prius app to check the effectiveness of my battery grid reconditioning. The data, however, confuse me more than help.
    • Life Expectancy: Before reconditioning, it was 57%. Right after reconditioning, it was improved to 94%. I thought it was too good to be true. So after 9 days and about 60 miles, I tested it again today. The new result, 65%, a big drop from 94%. To check its repeatability, I tested a second time. It became 82%. Which one is the true life expectancy, 94%, 65%, or 82%?
    • Battery Temperature: The battery temperature was over 100F. I thought it was too high, so I used Dr. Prius to override the battery fan temperature setting. Without override, the default setting does not show a triggering temperature. With override, it looks like I can set the threshold. So what is the threshold under default condition? What threshold temperature should I set? How to control the fan spining speed?

     
    #1 PriusII&C, Aug 17, 2025 at 12:50 AM
    Last edited: Aug 17, 2025 at 12:57 AM
  2. Tombukt2

    Tombukt2 Senior Member

    Joined:
    Nov 29, 2020
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    Location:
    Durham NC
    Vehicle:
    2009 Prius
    Model:
    Base
    Welcome to the wonders of stored electrical energy as we know it as batteries . These numbers bounce around every 15 minutes every cycling of the system and So on. Generally Panasonic EV batteries last 8 to 10 years you're close I Imagine . So regardless of any numbers in any app you're close I would think just by the time in years you would be closer to 25 to 45% battery left . So it seems you're about right on schedule with time and numbers . Every time you run that test it's going to be different
     
    #2 Tombukt2, Aug 17, 2025 at 7:21 AM
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