This portable charger from Anker PowerCare has more than 61,000 reviews on Amazon, and there's a reason why!

"Works so well I bought all the colors (helps to keep track as family tends to hijack them) Perfect for giving my iPhone 6s some staying power. Use constantly all day and night without worry. A must have on vacations as a day out in Vegas will easily drop u to 0 after pics and videos or navigation. Durable, effective, compact. Heads up, the black charger was a tad longer, didn’t even realize it until now. Also, can charge to to 100% quick but its almost a false reading as it drains really fast. I keep one with me in my EDC bag and at work at all times. It’s helped out friends and clients as well. Charges iPhones well but an iPad mini will zap this to nothing so stay away from larger electronics. Buy it, buy 2 of them!" –Parabellum322

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