I did a little research and read all the information before I bought it. So I put it in the sun for several days in a row and there is no change. He couldn't even charge my phone, I didn't even see a flash on my phone. Unfortunately I didn't test it in time to return it and thought it needed more charge to find out it didn't work and now I'm stuck with that and lost a lot of money. DO NOT BUY THIS ITEM!
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