Does it charge in the dark?
No
Do I need to have the POC helmet in the window when not chargin?
All products are different but Poc helmet is charged..
Is this too good to be true?
It is good. And it is true.
What is the difference between Qi charging and Powerfoyle charging?
Powerfoyle charges wherever there is light. Without cables..
Is Powerfoyle a solar cell?
Yes it is a photvoltaic light harvesting technology but the unique features that mimic materials like wood etc and its flexible and bendable shape it can be integrated into products like any material.