I love this area! Ive been to Puigcerda and Martinet a couple of times. I also went up near Lles towards Andorra. There are 2 lakes over there Estany Gran y Estany Petit. Awesome journey on my EMTB climbing all the way up there! I stayed on the trails, but Ive heard that other mtbers would often go off trail to get to the high ridges and summits, just like you are doing. I never tried it because i wasnt familiar in the area so i didnt want to risk it. But seeing your footage makes me want to go out there again!
Also the bike park Molina (south of Puigcerda) was my first true bike park experience. Would love to revisit some day!
Stats say 900W. Does that mean you used two batteries? (I imagine so, because 7,5 hours riding is more than one battery will cope with even in Eco all day).