The solar energy is stored first in the built-in battery and then delivered to the mobile phone. The advantage is that you can maintain the residual energy and can load his phone again later. On my current 4-day camping trip I was able to phone from me and two friends constantly energize. If I did not use the charger, I simply placed in the sun. Lt. Request from the manufacturer can replace the battery when it should after a few years to give up the ghost, however, by disconnecting the device for repair.
The design convinces, but the outer shell is sensitive to fingerprints. The only weak point is that there is no resistance when folding the solar charger is built. This should have been able to install calm. On a positive note, however, that the folded charger does not become just again, but remains magnetically closed.
The solar panels are large enough to produce enough energy even in poorer weather. However, as with all solar systems, whether on the roof, or in the car on the sunroof when clouds are in the sky, the solar power drops rapidly. This is logical, and does not fall in my estimation significant.
