Moshi's IonBank 5K is a mobile charger capable of charging your iPhone multiple times with its lithium-polymer cell rated at 5,000 mAh. For convenience, IonBank 5K comes with an integrated Lightning cable to charge your iPhone and a USB cable to charge itself. The extra USB port on IonBank 5K allows for a second device to be charged, whether it be another iPhone or even an Android device. Utilizing Moshi's DPS (Dynamic Power Sharing) technology, IonBank intelligently detects and delivers the optimal charge rate to each connected device. Unlike typical lithium-ion battery packs on the market, IonBank uses higher grade lithium-polymer cells for greater reliability and longevity. Simply plug your IonBank into any USB wall or car charger to recharge.