Device hui / Customer Ugh

I have the outlet for my motorcycle bought by sometimes charging a cell phone during longer journeys.
For processing: Looks pretty good and is great to hide the bike. The cap seals the box from super. The cables are long enough to be added anywhere on the motorcycle.
To function: the can provides the 5V as desired. They should, however, connect the ignition plus. Otherwise, the device operates continuously and will probably empty the battery during prolonged standstill.

Criticism: At first I the socket directly clamped to the ignition plus. Everything went well, until you have started the engine. The voltage applied to the booting is definitely too much and the unit turns off. Mail to Customer Service you can save, because no reports! Very unfortunate. Costs two star. Because something does not go.
Ultimately, however, I was able to help himself. A switch in front. So only when the machine is running may be the outlet has power. Then you also prevent the voltage spike that occurs at startup. Or can provide a voltage spike suppressor to buy. If both work.