I was half expecting this controller to be real MPPT - or at least have an inductor and do a modest amount of DC/DC conversion. But no, it's an out-and-out fake, a fraud, a con, a rip-off. It looks like a PWM controller though, so it's worth checking how well it works.

By Julian

Youtuber, shed dweller, solar charge controller aficionado

10 thoughts on “Review: mppt-m20 solar charge controller #1 – it’s a fake”
  1. Avataaar/Circle Created with python_avatars Mas anto says:

    It's not mppt but scc pwm

  2. Avataaar/Circle Created with python_avatars Dmitriy SDV says:

    Thank you for rewiew!

  3. Avataaar/Circle Created with python_avatars Edin Fifić says:

    It's unfath… Without fathom. 😁

  4. Avataaar/Circle Created with python_avatars zulu flight says:

    Thank you for posting this Video.

  5. Avataaar/Circle Created with python_avatars I LAKE MY BIKE says:

    They say it is a PWM / MPPT not pure MTT solar charger. I don't know about the matter.

  6. Avataaar/Circle Created with python_avatars bonzour says:

    Thanks for sharing your knowledge, Julian.

  7. Avataaar/Circle Created with python_avatars ScienceRaven says:

    Perhaps DESIGN ONE YOURSELF! I'm just learning about the market and there's room for some more decent products!!!! There's no 2-3 amps chargers under $50 worth buying at the moment!

  8. Avataaar/Circle Created with python_avatars Anthony S says:

    Quigley. in 2weeks

  9. Avataaar/Circle Created with python_avatars Anthony S says:

    l have to drop my 300 $ a month ac bill.

  10. Avataaar/Circle Created with python_avatars Anthony S says:

    So does it have thermal protection? I'm wondering why the renogy is such a big box and heatsink?

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