(+) The USB power supply provides a voltage (4.75 ... 5.25 volts) is within the USB voltage tolerance. Specifically, I have a 1.8 meter long USB cable Utilizing values from 4.76 to 5.03 volts measured at the measuring points of my small computer Raspberry Pi. The ripple appears as a problem for the Raspberry as to be other consumers. Lack of appropriate measuring instruments I can not express in numbers the ripple.
(+) The power supply operates completely silent under all load conditions, which unfortunately is a rarity in today's switch mode power supplies.
(O) The build quality is fine. The edges of the two housing shells are bonded together unfortunately trimmed here and there badly. In addition, the electronics was only put there to housing, but not bolted, bringing in larger movements (about a rough journey) in the housing moves them back and forth.
(O) The existing domestic smartphone the power supply is only recognized as a USB computer connection. Thus it loads instead of the maximum current only 500mA. Whether this is due to the smartphone or on the power supply (namely, when the two data lines not shorted or are fitted with resistors), I can not say unfortunately. The power supply housing is stuck together, as mentioned above, which makes a non-destructive housing opening impossible.
(O) one to two millimeters more width in the case would it possible to obstruct rather than the unstable Euro plug (CEE 7/16) the significantly more stable contour plug (CEE 7/17). This would have avoided damaging the plug contacts in the long term by the high weight of the power supply. The compatibility of both connector types is virtually identical worldwide.
() The item description in broken German is misleading: ... tuck but also everything in the included travel case. Unfortunately, no travel case is included.
() Are located next to the brand logo and the lettering USB Fast Charger no further information on the case no information about the input voltage, the frequency, the maximum power, the protection class and the manufacturer and model number. Also lacking any mark, the CE mark and the years prescribed in Europe WEEE symbol (crossed-out garbage can). The details can be criticized again only partially in the operating instructions and packaging, but this is insufficient. Not every user has this be within reach (especially when traveling in countries with different voltage and frequency).
