Load at every sunny place: Nine USB solar panels in the test

In practice, many of the candidates almost reached the values promised by the manufacturer in the test, at least if they are correct in the lunchtime with a cloud -free sky. You can attach all participants to a backpack or a tent stick using the carabin hook supplied. The right -angled orientation towards the sun is better. As soon as the angle deteriorates, the sunlight takes off, the panels heat up or are behind glass, the results sometimes drop rapidly – as with any photovoltaic system. We therefore also measured and evaluated the performance in diffuse light without direct sun.

That was the reading sample of our Heise Plus article “Load every sunny place: nine USB solar panels in the test”. With a Heise Plus subscription you can read the whole article.