I was able to use the solar base and solar link today to top off the charge in one of the charge pack ULs. It worked well. I think the magnet links are ingenious. (Sorry that I didn't take a picture, next time).

I took these on a long hike attached to my backpack. My phones charge ran out but I was able to attach my phone to the solar system and get a good charge along the trail.

I took these on a long hike attached to my backpack. My phones charge ran out but I was able to attach my phone to the solar system and get a good charge along the trail.