This is an great portable solar power system for vehicle borne back country trips. I gave it a 4 Star rating because the system's weight is heavy. This is not something that you would want to put in a back back. Functionally, it is an excellent product. I have also purchased the 7 Watt Solar panel for day hikes and the 27 watt folding panel which is much lighter than the Solar Briefcase, The folding solar panel will be used for longer humps. Great Hardware!
good way to start in a portable solar system that has plenty of power for a base camp or power outage at home etc. these are big panels, like size of an open laptop laid out flat so not a "toy" miniature setup.
edit: someone asked if it will power a hairdryer - no it will not but it will run it on a cool / air only setting. I ran my wife's tourmaline ion hairdryer over 5 minutes on battery pack and still had 60% power showing, spiking back up to 80% when I turned it off (daytime, charging in sun still). HTH!
I a very happy with this product. I am a little worried about how often I will have to replace the battery, but after several months, so far so good. The solar panel is a little heavy, but seems to we'll constructed and is working great.
I like it, and the only reason it did not get 5 stars from me is its shape. It looks like a thermos or water jug. I have a lot of Goal Zero's products and they all function real well. They do as one would expect from a fine product. But come on, it is ugly.