Battery SOC

Discussion in 'Generation 1 Prius Discussion' started by Gen1guy, Sep 16, 2012.

  1. Gen1guy

    Gen1guy New Member

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    So crushing today the triangle of doom lit and upon plugging in my scanner read "battery control error" read through all voltages all withing +/- .07 of one another. But when driving I couldn't climb above a 64% SOC.. Anyone ever see this behavior or is this semi normal ?

    Have fun !

    Eric
     
  2. bwilson4web

    bwilson4web BMW i3 and Model 3

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    It is not normal. Need to know the battery controller code(s) as well as temperatures. I have had a warning come on when I had done a forced charge and this can happen in high temperature conditions when doing a lot of regenerative operating, driving such as descending tall, steep hills at high speed and/or ascending them fast enough to put a discharge load on the traction battery (aka., typically speeds over 60-65 mph.)

    Your scanner was not plugged in? I've always preferred to keep my scanners plugged in before starting the car but then I use the scanners as a driving guide.

    What were the 19, module pair voltage range? Which one was lowest? Does it remain the lowest one the next day on a cold start?

    Bob Wilson
     
  3. Gen1guy

    Gen1guy New Member

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    Ok 40 degree night here's my readouts

    ImageUploadedByTapatalk1347804057.928757.jpg ImageUploadedByTapatalk1347804079.778182.jpg ImageUploadedByTapatalk1347804097.429956.jpg ImageUploadedByTapatalk1347804118.327352.jpg ImageUploadedByTapatalk1347804136.914862.jpg ImageUploadedByTapatalk1347804149.796434.jpg
     
  4. Gen1guy

    Gen1guy New Member

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    Additional note aux battery was at 10.9 better buy one of those too I suppose!
     
  5. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Ah,
    I was at first confused by the 0.06A traction battery current. When the car is ready, it is normally in the 1.3-1.6A range, the vehicle overhead. But the 10.9V Aux battery being so low, now it makes sense. When the car is "READY," does it go up to ~13.9V?

    There are a lot of reports of intermittent problems with a weak 12V battery so I would concur with replacement. If it is an original battery, the top "do not remove" label can be peeled back and add distilled water. Not a recommended practice, it can give another 6-12 months to a weak battery.

    Speculation, the modules do look good so I wonder if a temperature probe might have reported a high value. Still, I'm surprised no stored code.

    Bob Wilson
     
  6. Gen1guy

    Gen1guy New Member

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    I ordered a yellow top today so well see if that cures it!
     
  7. Gen1guy

    Gen1guy New Member

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    The saga continues after removing my large yellow top deep cycle I tossed the other one that was fine from my RV into it....driving we suddenly got the hybrid warning and turtle light. Scanner now reads v16 at only 14 volts while the rest sitting around 16 or more... Pulling out the pack more to come ....


    Have fun !

    Eric