These are the 2 Charge Controllers in Question
http://j35.us/10A-Mppt-ChCon
https://amzn.to/2KECoN5
FAQ:
1) Where can learn more about batteries? http://j35.us/DIYlithiumBatteryBook
2) Where can I buy Lithium Batteries https://j35.us/Lithium-July
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Glass - http://j35.us/100w-100-solar
DIY - http://j35.us/DIY-Solar-cells
4) Where can I buy a Battery Management System? http://j35.us/Batrium
5) What motor does your VW bus use? http://j35.us/HPEVS-AC51-Motor
6) What parts do you use on your Samba? https://j35.us/eSambaProj
7) What is the best fuse wire? I only use 1/8w resistor legs http://j35.us/ResistorLegs
8) Why not use Supercapacitors?
A. Batteries work better at this time, caps are rare and expensive devices that are very good at doing things not needed for storage systems typically.
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16 thoughts on “Cheap boost mppt solar charge controller efficiency test”
  1. Avataaar/Circle Created with python_avatars BB-box says:

    that cheap fan on the green unit is probably using 2 watts 🙂

  2. Avataaar/Circle Created with python_avatars Funcentric says:

    But at least the green one has a display with more readouts.

  3. Avataaar/Circle Created with python_avatars Funcentric says:

    Test is good enough. Thanks!

  4. Avataaar/Circle Created with python_avatars jonstivers says:

    Your meters look pretty cheap, too. Maybe test them next. My conclusion is, better to have a Pv voltage higher than the battery. There must be a good reason that Victron does not bother making boost charge controllers.

  5. Avataaar/Circle Created with python_avatars Dennis Carney says:

    Camera jerks back and forth too much.

  6. Avataaar/Circle Created with python_avatars Pablo P says:

    Hola.
    Quisiera saber si es posible que me puedas ayudar en recomendarme un mppt. Para poder ponerlo en un avion de radio control llamado Parrot disco. Ya que por ser algo pequeño necesito un mppt pequeño pero que sea muy eficiente ya que existen muchos pero por no saber sobre mppt. No se cual me pueda funcionar bien.
    Ya que somos un grupo de 5 aviones y queremos volar por bastante tiempo por eso queremos usar paneles solares.
    Las baterías que usaremos son de Lipo de 3 celdas o sea de 11.1 voltios las cuales a full carga llegan a 12.4 voltios.
    Si nos puedes ayudar seria super y asi compartirte nuestros videos de los vuelos.
    De antemano muchas gracias.
    Bendiciones

  7. Avataaar/Circle Created with python_avatars pulesjet says:

    The MingHe is a BOOST controller. Can not gain Current via converting higher voltages . They work good if your using a battery voltage above your system voltage.

  8. Avataaar/Circle Created with python_avatars Solar Function says:

    The green one can handle 600w & the black & blue one can only handle less than 300w.

  9. Avataaar/Circle Created with python_avatars slybunda says:

    fan consumes power too

  10. Avataaar/Circle Created with python_avatars Tobias Beins says:

    Is it possible to feed a auxiliary battery 12v agm via a cigarette lighter socket with the adjustable mpt-7210?

  11. Avataaar/Circle Created with python_avatars Michael D says:

    what do think about the hybrid systems

  12. Avataaar/Circle Created with python_avatars Ken Bell says:

    Mpt7210 will fail and start a fire.
    It's DANGEROUS JUNK!

  13. Avataaar/Circle Created with python_avatars Andy Alford says:

    This is a Boost Solar Controller, so shouldn't you test it with 12V panels and a 24V battery ???

  14. Avataaar/Circle Created with python_avatars Ata Seddigh Mohammadi says:

    Is there a good Buck / Boost MPPT solar charge controller? 🙂

  15. Avataaar/Circle Created with python_avatars AH AH says:

    green one is junk i get 10w out of my 100w panel. it also drops charging and takes forever to restart…

  16. Avataaar/Circle Created with python_avatars Paul Blakeslee says:

    Your numbers dont match your interpretation……..taking screen shots of two points indeed shows actual data from both MPPTs.

    Blue 31.00V out 34.51 in =89.83 eff. Green 29.4out 31.95 in = 92.01
    That is pretty close in my book. Also, green has a much better user interface that shows excellent input+output stats.

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