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11% OFF ainel solar dobrável Sunpower 50W 18V Carregador de bateria solar para camping, caminhadas, mochila USB fonte de alimentação. 55,05€ 61,99€ View It

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jns 19/01/2021

A very nice looking folding panel that doesn't produce like it should. The AM1.5 global standard is 1000W per square meter. The two panels combined were a little less than 61,800 square mm. The solar power input was about 61.8W at AM1.5. At 25% conversion, the available output would be about 15.4W. At 20% conversion, the available output would be about 12.3W. At 15% conversion, the available output would be about 9.3W. The USB conversion circuit has some losses as do the conductors. I was able to get only about 2.5W out of this panel in September, with it angled directly at the sun on a clear day at about 35 degrees north. Subsequent testing confirmed the performance multiple times with USB converters from several different manufacturers.

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jns Continuingtruncated review: I was able to only get about 2.5W out, even with extensive testing.
Resposta 19/01/2021

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