Sizing an MPPT Charge Controller [Basics]

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  • เผยแพร่เมื่อ 13 ม.ค. 2025

ความคิดเห็น • 23

  • @LeisureBit
    @LeisureBit ปีที่แล้ว +3

    Really helpful video - very interesting also in your experience of what happens when current is exceeded.
    All the best, David 👍

    • @offgrid_power
      @offgrid_power  ปีที่แล้ว

      Thanks David! Glad you enjoyed the video!

  • @jameswilsin5348
    @jameswilsin5348 20 ชั่วโมงที่ผ่านมา

    I got 7 100 watt polycrystalline panels on roof and just got a victron 75/10 smart controller now I know I’m not going to get no 700 watts but I needed to know if the 75/10 will work panels are in parallel 12 volts

  • @JenkinsUSA
    @JenkinsUSA 2 หลายเดือนก่อน

    6:00 Isn’t the 50 the maximum charge current for the battery?

  • @gatgolf
    @gatgolf 11 หลายเดือนก่อน +1

    how do you adjust for the charging voltage required by the batteries?

    • @offgrid_power
      @offgrid_power  11 หลายเดือนก่อน

      You mean on the MPPT charger controller?

    • @gatgolf
      @gatgolf 11 หลายเดือนก่อน

      yes@@offgrid_power

  • @outthere9370
    @outthere9370 6 หลายเดือนก่อน

    Very good! Thanks.

  • @portlandlocalchurch8168
    @portlandlocalchurch8168 6 หลายเดือนก่อน +1

    Please explain how someone could exceed the output amperage from the controller?
    I can see that the battery BMS if you exceed the amperage threshold in your BMS it would reset but the controller is only going to put out what the controller puts out how can you exceed the output amperage on the controller?
    Thank you

  • @michaelo6003
    @michaelo6003 10 หลายเดือนก่อน +1

    I have a 12 volt system and I'd like to replace my older Tristar-45 PWM controller with a Victron 150/45 MPPT smart controller. Can I do that if my system includes three 100W 12 volt panels (Voc=21.84, Isc=6.11, max voltage=17.99) wired in parallel? I've read that the Victron needs to see 5v above the battery voltage to even start charging. Thanks!

    • @alexisbonilla5942
      @alexisbonilla5942 9 หลายเดือนก่อน +4

      Hi, you would better off putting them in series to get a much higher voltage. You could string up to 6 in series with the 150/45

    • @michaelo6003
      @michaelo6003 9 หลายเดือนก่อน

      That’s what I’m going to do! Thanks.

  • @DigitalMind.254
    @DigitalMind.254 10 หลายเดือนก่อน

    Hey dear I am facing power dropping issue in series connection. I have connected 340watt and 380watt solar panels in series to epever mppt controller. It show power of one panel when I disconnect solar connector and reconnect, the mppt show both Panels. It’s hard to do this every morning. It was fine in winter but now summer starting and facing this issue. Using both panels form 2 months. images attacked. I have to try both in parallel to see what mppt response. Both panels volts amps are little different. Tesla 34.51v maxpower 33.18v. Tesla amps 11.01amps maxpower 10.29amps.

    • @jameswilsin5348
      @jameswilsin5348 20 ชั่วโมงที่ผ่านมา

      I tryed mismatched panels all I would get is the highest panel the others didn’t register so I went with all panels the same

  • @rizwanmumtaz4285
    @rizwanmumtaz4285 ปีที่แล้ว

    50 is your case of your inverter is the Max Output Current it can produce or Max input Current? I have some spare bifacial Solar Panels of 580Watts, the data sheet shows Voc = 52.2 V and Isc = 13.93 A under STC, and 48.9 V 11.09 A under Non Stc test, which values do we need when sizing charge controller ?
    My Mppt is 145Voc/100Amp output/17 Max input , can I not connect 4 panels in 2 series ? I am confused please help?

    • @alexisbonilla5942
      @alexisbonilla5942 9 หลายเดือนก่อน

      When sizing the charge controller, you need to use your panels’ Voc and Isc values. Since your MPPT is 145/100, you should create two groups of 2 panels in series, and then connect the 2 pairs in parallel. If you were to put 3 in series, you would exceed the moot’s voltage limit during peak hours.

  • @JenkinsUSA
    @JenkinsUSA 2 หลายเดือนก่อน

    2:30 - I would expect the mppt to shut down instead of burning up.

  • @TheBigfoot567
    @TheBigfoot567 4 หลายเดือนก่อน +1

    Use the whiteboard...!!!!

  • @MrGentlebutfirm
    @MrGentlebutfirm 7 วันที่ผ่านมา

    To much current! My Victron just limit it! NO problem. Its called oversizing i believe, which is great as we most of the time don't run near maximum.. NO RESETTING with me. My MPPT is a 100/20

  • @blackstar1557
    @blackstar1557 ปีที่แล้ว +3

    Just give the maximum amount it can handle. No one cares about how cold it is or isn’t is out. Max amount PERIOD …!!!!

    • @offgrid_power
      @offgrid_power  ปีที่แล้ว

      👍🏼👍🏼

    • @jimmydurbin2929
      @jimmydurbin2929 8 หลายเดือนก่อน +2

      Good Lord. So the content creator that is providing his knowledge, time, camera, lighting & all that solar equipment……..shouldn’t be able to make his own decisions on what he deems as crucial information to pass along. I came here not knowing anything about solar and I still feel like I need to go through all that one more time to get a grasp on everything he was trying to get across. So I do care sir. I’m going to go out on my limb here and say I think he had a goal of reaching out farther than just grumpy ass know it all’s like yourself and maybe keep a noob like myself from buying the wrong mppt solar controller. Well unfortunately for me, I did purchase the wrong mppt controller. I thought I had grasped the concept but I did not. I bought the Renogy 100a mppt controller that is more suited for a house, cabin or so forth. Not for my setup, a 21’ Lazy Daze with a 400w & 220 w panels. So spare us from your retched opinions as it was not necessary at all. Go make your own video and do it the way you want and leave everyone else alone. They can make their own videos any way they wish. Jeez, can’t believe this would even have to be said.

    • @simoncoe7781
      @simoncoe7781 7 หลายเดือนก่อน

      Sounds like your on your period