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High amp volatility /w apartment building charger

Discussion in 'Supercharging & Charging Infrastructure' started by greenrider, Feb 22, 2021.

  1. greenrider

    greenrider New Member

    Joined:
    Aug 6, 2020
    Messages:
    2
    Location:
    San Francisco
    I'm charging my 2020 Model Y in a condo apartment building. The building recently installed Powerflex charging stations.

    For some reason, when charging from the Powerflex units I get seemingly wild fluctuations from 8-30 amps. See screenshot for how this looks over the course of a charging session.

    Since I've never seen this behavior when charging at various destination chargers and Superchargers, I'm wondering if there's a chance something is wrong with the Powerflex unit and whether this sort of volatility is damaging to the battery at all.

    Anyone have any experience here?
     

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  2. P3dStealth

    P3dStealth Member

    Joined:
    Nov 12, 2019
    Messages:
    911
    Location:
    USA
    #2 P3dStealth, Feb 22, 2021
    Last edited: Feb 22, 2021
    It's the charger. It's their adaptive load management. Go to the page and scroll down.

    Turnkey Solutions – PowerFlex

    It won't do anything to your car.
     
    • Informative x 2
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  3. Watts_Up

    Watts_Up Active Member

    Joined:
    Mar 4, 2019
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    Location:
    In a galaxy far, far away
    I would try to limit to 24 Amp instead of 32 Amp to see if you get a more constant load.
     
    • Like x 1
  4. miimura

    miimura Well-Known Member

    Joined:
    Aug 21, 2013
    Messages:
    5,965
    Location:
    Los Altos, CA
    I use Powerflex stations regularly. The varying purple area in the chart is the normal load management of the Powerflex system. However, your red spikes are not normal. I suspect that the car is seeing voltage fluctuations that it doesn't like. Try sitting in the car while it's charging and watching the voltage and amperage reading on the car's screen. If the voltage drops, followed by the amp draw dropping, then there is a problem with the installation. If this is happening regularly, I would contact Powerflex and send them your screen shot. However, it won't damage the car, it's just prolonging your charging time.
     
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