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L2 charger = 12 EV miles, 120V outlet = 14EV miles. Doesn't make sense to me..

Discussion in 'Gen 1 Prius Plug-in 2012-2015' started by vajratlr, Nov 15, 2013.

  1. vajratlr

    vajratlr Member

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    At home I plug into a 120v wall outlet and I get around 14EV miles and that's in the colder morning. During the day at work I charge it at an Amtrak station via L2 charger and I only get 12 EV miles and that's in the warmer afternoon. Not really a huge deal but was wondering why as it doesn't make sense to me.
     
    #1 vajratlr, Nov 15, 2013
  2. Michael33

    Michael33 Member

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    I believe that your car is estimating the range in two different places, right? One estimate at home, and one at work? Since your previous energy consumption is used for the estimate, I think you have a lower energy drive home, and a higher energy drive to work. Think hills. I'm assuming that by "get" you mean the estimate, and not actual range, but it should apply in either case - just reverse the hills. ;-)
     
    #2 Michael33, Nov 15, 2013
  3. vajratlr

    vajratlr Member

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    I thought the estimate is based on overall consumption? I mean how does the car know where I am or where I'm going?

    Nevermind, I think I know what you mean now. You mean the consumption is only based on the last trip? But I've plugged it in on a weekend at home and the previous trip was not from work. I still got 14 on screen. Unless of course, the consumption was similar.
     
    #3 vajratlr, Nov 15, 2013
  4. usbseawolf2000

    usbseawolf2000 HSD PhD

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    How is the elevation?

    It could be a slight downhill in the morning trip to the train station.
     
    #4 usbseawolf2000, Nov 15, 2013
  5. 3PriusMike

    3PriusMike Prius owner since 2000, Tesla M3 2018

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    I see the same type of difference at home and work...but the difference is only ~0.3 miles. Going to work (very slight downhill), 6 miles I consume about 4 miles of EV range. Going home I consume 6-7 miles of EV range. The elevation difference is about 120 ft.
    The car averages many trips to come up with the EV range. So I'd think you need to have a pretty large elevation change.
    I charge 240v at work and 120v at home and don't think this has anything to do with it.

    Mike
     
    #5 3PriusMike, Nov 15, 2013
  6. Chazz8

    Chazz8 Gadget Lover

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    What is the Brand of L2 Charger?
    How much electricity does the L2 Charger say it charged the Prius with?
    Could the L2 Charger be stopping charging when the Prius goes into final lower charge at end of cycle?

    Give us enough info and time and PriusChat members will answer your question.
     
    #6 Chazz8, Nov 15, 2013
  7. vajratlr

    vajratlr Member

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    Here's what I found out.
    Home elevation = 317ft
    work elevation = 830ft

    My commute is 41 miles each way.
    At home using wall outlet 120V, I draw 1.3kw.
    At Amtrak, they have Eaton stations and I can draw 1.9kw.
     
    #7 vajratlr, Nov 15, 2013
  8. Michael33

    Michael33 Member

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    The car uses more than the last trip to estimate range, but I believe the last trip counts a bit more heavily than the average. With my Leaf, range is estimated based largely on the last *five minutes'* of consumption, IIRC!
     
    #8 Michael33, Nov 15, 2013
  9. giora

    giora Senior Member

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    I suppose that in this case, the car will give a message that the charge was interrupted.
     
    #9 giora, Nov 15, 2013
    Chazz8 likes this.
  10. bisco

    bisco cookie crumbler

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    2 miles is a huge difference, i'll have to try my L1 and see what i get compared to the 12.9 i had today from my L2. i haven't put a full charge in with the L1 since getting the L2 last year.
     
    #10 bisco, Nov 15, 2013
  11. giora

    giora Senior Member

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    Bisco,
    Looking forward to your test, it will help to clear-up things on this issue.
     
    #11 giora, Nov 16, 2013
  12. El Dobro

    El Dobro A Member

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    L1 at work and L2 at home and the readout is 10.5 EV for both for about a month now.
     
    #12 El Dobro, Nov 16, 2013
  13. Michael33

    Michael33 Member

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    Is your commute flat, or does it average out to the same amount of hill and grade climbing each way?
     
    #13 Michael33, Nov 16, 2013
  14. El Dobro

    El Dobro A Member

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    Elevations are pretty much the same. It's 1 1/2 to 2 miles longer coming back from work because I have to go further west to a U-turn to head back East.
     
    #14 El Dobro, Nov 16, 2013
  15. usbseawolf2000

    usbseawolf2000 HSD PhD

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    Bingo!

    That's 50 stories / floors difference. That will do it.
     
    #15 usbseawolf2000, Nov 18, 2013
  16. bisco

    bisco cookie crumbler

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    i finally got around to it. last night, L2: 12.8 miles. this morning, L1: 12.8 miles.
     
    #16 bisco, Nov 20, 2013
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