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Can anyone tell me what kind of charge I should expect with a fully Charged Juice pack Air and a completely depleted iphone ? My charge would only go up to 60% after 1 hour. I again tried it,with the iphone at 20% and after about 2 hours it got to 82%. From what I understand ,the Air has a smaller battery than the original and will never go to 100%,but shouldn't it be better than this ? Thanks.