POWERCORE ESSENTIAL 20000 PD, ANKER USB C POWER BANK (18W) BLACK POWER BANK Ultra-High Cell Capacity: The enormous 20,000mAh cell capacity can charge the iPhone XS more than five times, the Samsung Galaxy S10 nearly five times, the iPhone 11 more than four times, and the iPad mini 5 more than two and a half times. Advanced Charging Technology: The trickle-charging mode is the most effective way to charge low-power accessories, and Anker's proprietary PowerIQ and VoltageBoost technologies work together to provide your devices with an optimized charge. Two devices can be charged simultaneously thanks to the twin USB ports. Other devices cannot be charged via the USB-C port. Versatile Recharging: You have more choices regarding how you recharge because it has both a USB-C and Micro USB input port.