Light and electrical outlet after StZVO

I have are only a couple of weeks, so I can only judge them on their practical functions.
The assembly was a bit difficult because I have a MTB, cables were laid quickly and the button is thanks to the included rubber rings easily. Even at very low speed it is lit extremely strongly.
Charging my iPhone 5 is very limited when the front headlights and 90Lux it no longer charging.
Is off the lights, my phone to airplane mode and I drive about 20-25km / h, my phone invites as a regular power outlet.
When using Navigation, very bright display and about 20km / h the battery will no discharges, but also increases by about 15% / h.

because you can not always ride invites its devices at each, I recommend everyone to buy an external battery to the one aufladet permanently. The then supplies all devices, even away from the bike.

109,90 I just paid and I think it has now more than worth it! Electricity costs are thus gesparrt ecologically.