Review on 🌞 Portable Foldable Solar Panel Charger - 100W | Compatible with Solar Power Stations, Phones, Laptops | Ideal for Family Camping, RV, Travel, Hiking, and Outdoor Activities by Pat Haberman

This quickly charged my little Sherpa 100 with the 12v port and adapter that came with it. The only complaint is that the USB charging port draws so little power that it's practically useless. I tried to charge my Anker stone using the USB charging port. It was very slow. I then connected this panel to my Sherpa with a 12v charging cable and it charged quickly (from 50% to 100% in a matter of hours). I ended up connecting my anchor to Sherpa as well as a USB fan and then charging my laptop through Sherpa's inverter by connecting it to this solar panel. It wasn't charging at this point, but it stayed stable while everything drew power. I would give those 5 starts if that USB connector was rated for at least 5V.