Самый положительный отзыв о Солнечная панель на Banggood Russia|Покупка Русский

iMars SP-P25/SP-P50 25W / 50W 19V гибкая солнечная панель PET монокристаллическая батарея зарядное устройство с постоянным током и USB-выходом для кемпинга, яхт, автомобиля и грузовика

71% OFF iMars SP-P25/SP-P50 25W / 50W 19V гибкая солнечная панель PET монокристаллическая батарея зарядное устройство с постоянным током и USB-выходом для кемпинга, яхт, автомобиля и грузовика US$34.99 US$119.99 View It

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Ladys 09/08/2021

The panel, which is declared as 50W, does not correspond to the description according to the actual measured values. Measured at noon perpendicular to the sun 9.8.2021 50 degrees north. No-load voltage 21.8V. Short-circuit current 1.6A Voltage at load 16.8ohm 17.2V, ie power approximately 18W The active area of the panel is approximately 0.17 m2, which is about 6 times less than 1 m2. If the panel really had 50W, then the power of 1m2 should be 300W / 1m2 and the efficiency of the panel would have to be 30%, which is nonsense. I believe that the power of the panel in really optimal conditions is max 25W with an efficiency of about 16-17%. When the panel heats up with the sun, the performance decreases slightly. If the manufacturer declares the panel as 50W and calculates this value as the product of the no-load voltage times the short-circuit current, it is a disappointment.

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