With built-in Lightning and USB-C cables, you're always prepared to power up wherever you go. This iOS and Android friendly-battery, guarantees to charge both devices simultaneously thanks to its bi-directional charging feature. Recharge your iPhone and IonGo 5K Duo at the same time so your battery is always topped up. Using the same battery technology used in the latest electric vehicles, the cells are optimized for charging, discharging, and low internal resistance..