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Dr. Prius Results... are these normal?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Tha_Ape, Mar 4, 2020.

  1. Tha_Ape

    Tha_Ape Active Member

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    Hello,

    So I downloaded the Dr. Prius app to check the battery on my gen 3 and got the attached results. Is that normal? Good? Bad?
     

    Attached Files:

  2. Mendel Leisk

    Mendel Leisk Senior Member

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    Maybe type out the block voltage and resistance numbers; it's really hard to read. Dr Prius doesn't seem to be showing any "alerts", fwiw.

    Voltage diff value seems very low, good?

    Hopefully someone with more of a clue will be along.
     
  3. Tha_Ape

    Tha_Ape Active Member

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    My ulterior motive was to give you a vision test ;)

    The numbers on the green bars from left to right:
    16.43
    16.40
    16.45
    16.45
    16.40
    16.40
    16.43
    16.45
    16.40
    16.40
    16.43
    16.43
    16.40
    16.40

    The numbers on the blue bars from left to right:
    24, 23, 23, 23, 23, 23, 23, 23, 24, 23, 24, 23, 24, & 24
     
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  4. Mendel Leisk

    Mendel Leisk Senior Member

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    I knew it!

    Mine are pretty crappy (2010 Prius with 86k kms), a lot more voltage variation, and still all green, which I think means no worries. Resistance values lower though. See if this is another reading test:

    IMG_1286.PNG
     
    #4 Mendel Leisk, Mar 4, 2020
    Last edited: Mar 4, 2020
  5. Mendel Leisk

    Mendel Leisk Senior Member

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    @jacktheripper which version of the app has the larger font numbers atop the columns?

    Also, OP's battery readings?
     
  6. Raytheeagle

    Raytheeagle Senior Member

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    Voltage differences look fine;).

    Even on the garage queen they aren't that bad:).

    When will the battery reconditioning begin:whistle:?

    Gotta make her last a long time(y).
     
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  7. Tha_Ape

    Tha_Ape Active Member

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    Thank you. I took the screenshot off an android in portrait. FWIW
     
  8. Grit

    Grit Senior Member

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    Not enough data to go by, it’s just a snapshot. You want real time data to see actual on-going fluctuations. Voltage difference may read 0.02 volts and then the next second interval refresh could be .6 volts difference. .02 volt difference is great, .6 volt difference not so great.
     
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  9. Max Taiwan

    Max Taiwan Active Member

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    They look ok to me. Voltage diff is low which is a good sign. The app comes with a load and charge test which would be good to run to see if the battery are within good tolerance.
    The app is used to see big issues such as unbalanced cell or cell failing. It has a capacity estimator to give you a idea of the life capacity.
    These battery last pretty long, so a snap shot like what Grit said its really just identifying the things that are on the way out.
    Give those test a go for a few times will give you a better idea. Fyi the capacity test is long and cold, i suggest you to do it in summer.
     
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  10. StarCaller

    StarCaller Senior Member

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    neone got some results to compare with?
    82.000 miles, minimum trip length ALWAYS at least 25 miles /
    (regarding the battery overdraw: I was adjusting the ac to keep the amp draw in the green)

    [​IMG]
     
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  11. Grit

    Grit Senior Member

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    Negative, I mentioned that one snapshot is not enough data. You have to monitor real-time data to see any fluctuations that are irregular. Voltage difference will change consistently w/every refresh interval.
     
  12. Max Taiwan

    Max Taiwan Active Member

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    I mean to say, if it is really buggered and on its way out, then you will see it in a snap shot because it will always be there, regardless of fluctuations.
    Dr prius is real time monitoring OP was just able to post still photos here, otherwise its a dancing bar chart while running.
    Go down a hill with a near to full battery and you will see all the bars go red. Use the battery when the meter is low will also show red bars or over voltage and over discharge. Not for long and the ICE will kick in.
     
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  13. burebista

    burebista Active Member

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    Yep. I just saw this in the morning. First time when I saw red bars on Dr. Prius and I was baffled.
    But indeed ICE kicks in after a couple of seconds and all green again.
    Thx for explanation. (y)
     
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  14. Max Taiwan

    Max Taiwan Active Member

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    For those who have rear radar that is set to ON and without the option to mute it, don't do this test when you are close to something in the rear. It will drive you insane!
    20sec of over current is pretty good handling, 82.83% plus the 20% overdraw you still looking pretty good!
    I spoke to the app developer Jack about the force charge protocol, having to do full gas and full brake is not what most are comfortable with for a extended amount of time. Alternatively find a spot that you can park safely after coming down a mild slope of 3km to get the pack charged to around 90% and then do the force charge maneuver for around 1 to 2 min to top it up for initiating the test protocol.
    I did the force charge from 30% the first time, took a lot of anxiety sitting there and doing the force charge for 7 to 10min...

    The maintenance mode does not charge the HV battery.... would be nice if it did!
     
    #14 Max Taiwan, Mar 10, 2020
    Last edited: Mar 10, 2020
  15. wheezyglider

    wheezyglider Active Member

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    Read radar seems to be very common in Taiwan for several years now, and still quite uncommon in the USA. Even the "advanced technology" version of Gen 3 in US (which has self-parking) doesn't give you a back-up beep!
     
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  16. Grit

    Grit Senior Member

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    Thought we wanted the beep to go away? So everyone ponied up and got OBD2 bluetooth to silence it heh.
     
  17. wheezyglider

    wheezyglider Active Member

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    LOL yeah sorry -- I meant that proximity beep they have that tells you how close your back bumper is to hitting, not the useless backup beep that we have.
     
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  18. Grit

    Grit Senior Member

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    (y)
     
  19. Max Taiwan

    Max Taiwan Active Member

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    Nealy every car has it. Because the windows are tinted too much is my guess. When you can't see then hearing sense is better ha ha ha.
     
  20. Soluzon

    Soluzon New Member

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    625chyb.PNG 627.PNG 630.PNG 633.PNG 634-2.PNG 647pm.PNG 655red.PNG pregrnbatt.PNG
    OK I didn't want to start a new thread but my 2010 Prius. 161,000 miles on it gave me a "CHECK HYBRID" 20 minutes after an automated car wash and right before the warning msg., I was looking at the console outside temp display and that was way off, as it was 95F and my display was showing 79F. I thought maybe it's splashed water on a circuit from the car wash or it's actually the HV Bat. I drove it home, and cleared the CHECK HYBRID via a fuse box battery wire, HV circuit breaker disconect and 3X restart method from a Youtube vid, bought an OBDII reader, downloaded the Dr. Prius app & drove it for maybe 300 miles again and got my 2nd CHECK HYBRID message, pulled over plugged in the OBDII reader and read 3 codes PAO80, PAOOD, PAO80 and only thing I saw,on Dr. Prius, with engine running, was battery temps of 105, 112. & 113 with some occasional yellow bars, but mostly all green module bars and the voltage differences fluctuated from .05--.37 while driving. I took random screenshots of DR.Prius readings & it was in the high 90F that day. I didn't attempt to clear the one remaining PAO80 by disconnecting the 12V, the other 2 went away with the app function. So I then removed & cleaned the HV cooling fan blades of it's dust (FYI- a toothbrush works great for this). Within 40 miles and after parking with A/C on for about 20 ' , I get another Check HYBRID as I'm driving away. Stopped, OBDII read the Dr. Prius, now only shows the single PAO80 code. Drove home with the app on, noticing more yellow bars than before, but lower battery temps this time, and one time the "pack voltage" turned red by going above 250 just for a second, before things got back to rather normal green bars. I usually don't use the Display Energy Monitor on the dash, but then decided to, thinking I might notice something before the next warning message appears. I then noticed that there is no flowing arrows anywhere on the Energy Monitor display and wondered why. Searched this site and found that it's can be caused by the 12v Battery temp sensor being disconnected. So I checked that out and it was connected, but I undid and redid it just in case. The Energy display monitor started working again. Thought maybe that was the cause of the PAO80 and continued to drive with the Energy Monitor display exclusively. I went 250 miles, until yesterday and then got another CHECK HYBRID, plugged in the OBDII and Dr.Prius app on, had the same single code of PAO80. Drove home about 5 miles taking screenshots on my phone along the way and this time the Pack voltage hit red above 250 and stayed much longer, the voltage diff on one screen shot did record a 1.8V difference too. Here are yesterday's post warning sequential screenshots from my drive home, time stamped by the phone View attachment 215256 View attachment 215257 View attachment 215258 View attachment 215259 View attachment 215260

    What baffles me is my car has displayed no decrease in mileage at all; still avg 50+mpg, the display monitor varies from 2-8 bars, I've never seen it below 2, also no change what so ever. The 12V shows 11.7 V via the console screen diagnostics. I can & will run the DR. Prius battery test eventually, but I'M trying to learn by tinkering/observing i.e. curiosity. Is it normal for a HV battery to go bad with no affect on MPG or other noticeable performance issues?
     

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    #20 Soluzon, Aug 24, 2021
    Last edited: Aug 24, 2021