text: I was really excited about this. But I ended up really disappointed. It holds a great charge. I was able to charge my phone and smart watch for 2-3 days without having to recharge the charger. But I was really disappointed with its ability to charge by solar. It just won't. I had it in direct sunlight for about 12 hours over the course of 2 days and it still only showed 1 indicator light. Since then, I've had it in my window for over a week, untouched, and it's still only showing 1 indicator light for how charged it is. Customer service was great though. They offered me a refund when I contacted them about it. I'm giving it a 3 only because their customer service was great, it holds a great charge, and I can still charge it via charging cable through a wall outlet.