Originally Posted by phughes

I like their battery packs, but I haven't had luck with their solar panels. I forget which one I have, and I can't find it at the moment, but I have never had any luck getting it to charge anything. I put it outside on a sunny day and a cell phone didn't charge. It does out put energy, but it never charged anything I have hooked it to. I keep trying it occasionally but no luck. I am going to try again if I find it. I have tested it with a meter and though I forget what it read, it has been at least eight years since I experimented that in depth, but it never put out even close to what Goal Zero claims. If I find it, I will put it in the sun for an extended period of time to see if I can wake it up.