Solar Panel Holder

Solar Panel Holder for dual monocrystalin solar panels:
https://www.banggood.com/5V-250MA-1_25W-Mini-Solar-Panel-Photovoltaic-Panel-p-987900.html?cur_warehouse=CN
Twice printed results in a foldable dual panel holder.
Can be fixed on tube holder with 2 distance tubes usin a M6 100mm long screw.
The serial connection of the 2 panels delivers up to 10V and in the example shown drives a 12V Arctic F8 Silent fan.
https://www.arctic.ac/eu_en/f8-silent.html
Another example would be to connect th