There are basically on the set also nothing bad to say, the assembly instructions are simple, the assembly also. Yet from the beginning was the worm in it, namely the charge controller. Clear that one with the set no world-class regulator expected, but mine was a clear Monday device. Blinking lights all times, sometimes only one or two, sometimes had electricity for consumers because, sometimes not (although the gel battery was well charged).
I have tried various consumers (all within specification) on both the 12V sockets and the USB port (which according to imprint the way to deliver twice as much mA, as it is in the product description). Whether lamps, chargers, fans, phones, etc., it was simply no logic recognizable. In a moment everything went perfectly according to the description and the next attempt at all was not, even though the battery was full, and handed in the sun 39 degrees in the shade.
Ultimately was obvious that the charge controller had an injury. I returned my set, and I will look elsewhere. Should anyone have similar experience (to get the technical support answer the phone I did not succeed), it is perhaps nervous and less time-consuming to swap equal the charge controller.