Amazon offers the mophie powerstation XXL 20000mAh External Battery for $58.49 shipped. You'd normally pay $75 at retailers like Best Buy, with today's offer saving you 22%. It's also the lowest we've seen it sell for at Amazon. mophie's powerstation XXL is headlined by three 2.1A USB charging ports, a 20000mAh capacity and the company's usual high-end […]

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