Never carry a charging cable again. The mophie powerstation plus XL universal battery combines a compact design, premium feel & built-in switch-tip charging cable that charges both Apple & micro USB (Universal Serial Bus) devices. This 12, 000m Ah battery gives you more than four additional charges on your smartphone or one extra charge for your tablet. A second USB (Universal Serial Bus) port lets you charge two devices at the same time. Charging on-the-go is now easier than ever. mophie products go through rigorous testing. Each battery is tested three times to ensure peak performance & safe operation. This is the reason why mophie is the 1 & most trusted brand in portable power.