Anker PowerCore metro essential Sense 10K portable charger has a 20W Power Delivery USB-C port. It also has a PowerIQ-enabled USB-A port and a trickle-charging mode for low-power devices. You can use the USB-C port to recharge the PowerCore itself. For the fastest recharging speed, Anker recommends using the included USB-C to USB-C cable with a Power Delivery wall charger.