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4-in-1 mini ESC max ratings

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  • Morten NissovM Offline
    Morten NissovM Offline
    Morten Nissov
    Contributor
    wrote on last edited by
    #1

    Hi,

    I see here that the voxl 4-in-1 mini ESC is rated for 2-4s (i.e. up to 16.8V at max charge). Maybe this is a stupid question, but is it possible to run LiHV 4s batteries with this ESC? The max voltage would then be 4.35*4 = 17.4.

    I realize this is above the rated specs, but I was curious if the difference was small enough that it was still within tolerable margins?

    Thanks

    Alex KushleyevA 1 Reply Last reply
    0
    • Morten NissovM Morten Nissov

      Hi,

      I see here that the voxl 4-in-1 mini ESC is rated for 2-4s (i.e. up to 16.8V at max charge). Maybe this is a stupid question, but is it possible to run LiHV 4s batteries with this ESC? The max voltage would then be 4.35*4 = 17.4.

      I realize this is above the rated specs, but I was curious if the difference was small enough that it was still within tolerable margins?

      Thanks

      Alex KushleyevA Offline
      Alex KushleyevA Offline
      Alex Kushleyev
      ModalAI Team
      wrote on last edited by
      #2

      @Morten-Nissov ,

      Yes, using 4S LiHV (17.4V) on the mini ESC (M0129) is totally fine - the ESC components on the ESC are rated for at least 20V. The TVS protection diode will start clamping / conducting around 19-20V, depending on temperature, etc, which means if you exceed this voltage, the TVS diode will burn out - this is the first thing that will happen during a sustained over-voltage condition.

      Alex

      Morten NissovM 1 Reply Last reply
      0
      • Alex KushleyevA Alex Kushleyev

        @Morten-Nissov ,

        Yes, using 4S LiHV (17.4V) on the mini ESC (M0129) is totally fine - the ESC components on the ESC are rated for at least 20V. The TVS protection diode will start clamping / conducting around 19-20V, depending on temperature, etc, which means if you exceed this voltage, the TVS diode will burn out - this is the first thing that will happen during a sustained over-voltage condition.

        Alex

        Morten NissovM Offline
        Morten NissovM Offline
        Morten Nissov
        Contributor
        wrote on last edited by
        #3

        @Alex-Kushleyev Sorry for the delay, didn't notice the alert. But great, thanks!

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