Great, but don't expect miracles. I have used it to charge my Android phone, portable battery and iPod. It works great BUT it needs bright direct sunlight. In fact, it charged my portable battery in about 8 hours in direct sunlight for 2 days via the Cel Phone network. If it's cloudy it works, but don't expect a huge charge. They have done a good job in terms of durability, design and ease of use. The hinges are ok but I wonder if they will break. They are like a string. I would like stronger brackets. I wanted to use it for cycling. It's a bit heavy and bulky for my use, but I'll take it anyway as I expect to be without power for many days. It's pretty easy to attach to your back bag.
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