total amps while force charging prius gen2?

Discussion in 'Gen 2 Prius Technical Discussion' started by tri4all, Jun 14, 2020.

  1. tri4all

    tri4all Member

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    my amp meter is not working, think I have a bad fuse...

    does anyone know or has measured the total charging amps sent to the hybrid battery while force charging prius gen2? also, is the charging amps the same while the car is running on drive?

    I recalled reading something in this forum that it was in the neighborhood of 15amps but I can't remember, I think a posting from patrick wong that I am not able to find now.

    thank you.
     
  2. dolj

    dolj Senior Member

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    I don't know you could use a standalone ammeter unless it was capable of up to 100 A.

    Techstream and Torque Pro (and maybe others) can give you current load and discharge readings though.

    Using Techstream I have seen it as high as 90 A charging, but more normally it starts at 65 - 70 A and then tapers off as the SoC increases.
     
    #2 dolj, Jun 14, 2020
    Last edited: Jun 14, 2020
  3. MickyMatter

    MickyMatter Active Member

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    While driving the charging limit is up to 25 kW.
    Divided by the voltage (can drop to 200 V) there's a current of 25,000 W รท 200 V = 125 A. Or even more, if the voltage drops lower. But I assume that lowest voltage and highest charging power don't occur at the same time.

    SM-G950F ?
     
  4. tri4all

    tri4all Member

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    I am sure this is how a blew my 10A fuse inside my multi meter....

    so going back to original question. I am assuming that the charge during 'force charging" would be the same as when driving. any thoughts? thank you
     
  5. LukUsc

    LukUsc Junior Member

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    I would also like to know what are the actual loading parameters and the actual specification of cells :)

    I know that newer li-ion batteries can donate up to 100A per module, you can suspect that Ni-Mh similarly because they are used interchangeably by Toyota.

    You need to measure the current with a clamp meter or a round module as in an OEM battery (I don't know what this "circle" is called professionally :) )
    No contact multimeter won't survive this current unless You use a shunt, but the clamps are definitely safer.

    Posted via the PriusChat mobile app.
     
  6. dolj

    dolj Senior Member

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    No, the force charging current is gentler, but not by much. During driving, it can go higher. Some others must have some metrics gathered from Dr Prius or Hybrid Assistant apps. One of those apps has, as part of their testing, a spirited acceleration and a quick deceleration to a stop.
     
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