Ship to United Kingdom , USD
Top Positive Review for %s on Banggood, Shop best %s with lowest price on Banggood. Browse most helpful positive review for %s before you buy., rc toys, fun sports, fashion, popular electronics
Adi 02/07/2022
I received it after 5 days from CZ in good conditions. The system is functional with a maximum power of about 7 W (full sun, 17 June 14:00 1st image: Lead Acid Battery charge). At the panel dimension I expected less than 20 W anyway (0.1 sqM x 1000 W X 20% = 20 W). The open circuit voltage is 18.1 V (2nd image) and the short circuit current 0.54 A (3rd image), the temperature is about 50 degree C (4th image). The voltage-current and power-current characteristics were measured (with a constant current load - 5th image), the measurement at 0.5 A is visible in the 6th image. The controller current consumption (from battery or solar panel is of 12 mA). The controller disconnects the battery from panel at about 14.4V and reconnect it at about 13.5V, I did not notice the PWM operation. For small solar panels (like this one) it is a good choice, for higher solar power a MPPT controller would be more efficient. Overall I consider this a good deal (I bought it at about 30 USD); be aware that the solar panel power is less than 10 W.
Comments (11)
  • Adi The voltage-current and power-current characteristics (5th image, 27 June 14:00 - full sun, with a max power: 13V x 0.5A = 6.5 W) were not published by the site :( .

    Reply 04/07/2022
  • qwerty63 Thankyou for giving specs which are missing elsewhere!

    Reply 11/10/2022
  • REXX5000 thanks for the truth. solar panels are always over rated in their power performance (maybe its a conspiracy, or they just out right lie to you about how much power they can put out so more because 90% people don't know the difference between voltage, current & Watt's.) it's wrong to have the buyer think the power of the panels is 100Watts when it's the controller that has/can handle 100Amps. now if this could do even 20Watts it would be worth it. but then again people think it's makes more power if it's hotter outside. THIS IS NOT TRUE. IT GETS ITS POWER FROM THE SUNLIGHT.(from the electrons in the sun's light to be exact) there are ones that use light as heat but they are used in large power plants. I think the truth needs to be explained properly about how these work for the common man to understand.

    Reply 17/10/2022
  • Rogério Figueiredo Thanks for the truth

    Reply 04/11/2022
  • BG243881310 Tried to order it but nothing happened. That’s typical with this vendor. Bob Taylor. UK

    Reply 16/12/2022
  • Rictronics Gracias Adi por el análisis

    Reply 12/02/2023
  • MCS95 Thank you a lot Man, your explanation is verry helpful

    Reply 15/02/2023
  • Skysurfer Excellent,many thanks for your review. My previous negative posts on goods from B/G have been ignored, so this is nice to see. I just wish they'd stop lying!

    Reply 08/03/2023
  • BG113891720 Measurements vert useful. Much thanks.

    Reply 26/04/2023
  • BG214128225 bonjour,
    avez-vous des ref de cbles pour brancher le panneau sur le contr7leur et ensuite les ref de cbles pour aller vers la batterie et l'ampoule ?
    Je pensais que tout tait inclus
    est-ce qu'on est oblig de passer par ce petit contr7leur et qu'est ce qu'on risque si on ne fait pas ?

    Reply 25/05/2023
  • BG112241911 thanks

    Reply 09/07/2023
Satisfaction Survey

Download APP to get an exclusive 10% off coupon