Very disappointed with the solar charging.
Gone for 3 days on the GR20 in Corsica from 12 to 14 July. The 10000 mAh of the battery was enough to charge GPS and phone but the solar charging didn't seem to work. We had sunshine during the whole hike and I left the battery in the sun again this afternoon on my terrace, no change in the charge level...
I am disappointed with this product.