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Traction Battery Questions

Discussion in 'Prime Fuel Economy & EV Range' started by Marine Ray, Mar 19, 2019.

  1. Marine Ray

    Marine Ray Senior Member

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    Untitled.png
     
    #1 Marine Ray, Mar 19, 2019
  2. schja01

    schja01 One of very few in Chicagoland

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    #2 schja01, Mar 19, 2019
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  3. john1701a

    john1701a Prius Guru

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    No, the "full" green is actually 83% capacity. The "empty" green is actually 13%. It's all one battery. So when you dip below 13%, that blue zone, the system is operating as just a hybrid. When it returns to green from regen, recharge, or plugging in, you are back in EV.

    It's all just a measure of capacity and there's never really a full recharge or full discharge. That's how longevity of the pack is achieved.
     
    #3 john1701a, Mar 19, 2019
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  4. Prius from Dad

    Prius from Dad Senior Member

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    #3 Yes, the HV portion will charge back up but normally it will not charge the EV portion. You can put it in CHG mode for a few miles to start the EV charging then driving in HV mode will charge the EV portion and also drain it.
     
    #4 Prius from Dad, Mar 19, 2019
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  5. bisco

    bisco cookie crumbler

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    keep in mind, there are no portions or partitions in the battery. the icon simply represents the charge level.
     
    #5 bisco, Mar 19, 2019
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  6. Marine Ray

    Marine Ray Senior Member

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    So the traction battery only charges to 83% of the 8.8 kwh battery?
     
    #6 Marine Ray, Mar 19, 2019
  7. Tideland Prius

    Tideland Prius Moderator of the North
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    Yes. For longevity. Even your regular Prius’ 1.3kWh NiMH or 0.8kWh Li-Ion battery is used to its fullest - from 20-80%.

    If you go down a long enough hill or a steep enough one, it will charge back into the EV portion. I’ve gotten 1 mile out of a short but steep hill. Coming down Mt. Baker, I’ve gotten 7-8 miles out of the undulating downhill portion.
     
    #7 Tideland Prius, Mar 20, 2019
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  8. jerrymildred

    jerrymildred Senior Member

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    It might help to think of the battery as a glass of water, which that symbol resembles. One big container full of electrons. The top 17% of the container is off limits and hidden as is the bottom part. The system won't let it go outside that range so there's no point in showing it. We just have a window into the range that is available for us to use and it has a line at 13% that prevents EV mode below that level.
     
    #8 jerrymildred, Mar 20, 2019
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