I bought this for obvious reasons and am disappointed with the speed (or "lack of speed" I should say. The documents that came with it and possibly advertised on this site indicated that it would fully charge the Goal Zero Switch 10 4 Hours in direct sunlight. That's nonsense! I sat on a chair on the patio in direct sunlight, plugged into switch 10, for about 6 hours and it was about half charged. It also said the smartphone was charging In 4 hours I plugged it into my Samsung Galaxy Ace Style phone for 4 hours with about 18% charge and when I checked my phone was actually down to 4% I gave it 3 stars just because it has the Switch actually charges 10 but camping in and out of the sun on your back or on a backpack in the woods probably lasts about 3 days I wouldn't recommend this solar panel to anyone!
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