Moshi IonSlim 10K USB-C Portable Battery, Ultra-thin, 10000 mAh, USB-C and USB-A, Aluminum Construction - For Mobile Phone, MacBook, USB Device, MacBook Pro, Smartphone - Lithium Polymer (Li-Polymer) - 10000 mAh - 5 V DC Output - 2 x - Titanium Gray

Charge 2 devices at once with Dynamic Power Sharing Ultra-slim profile (12.88 mm) with premium anodized aluminum Fast-charging USB-A port (up to 12 W) USB-C PD port (30 W, supports MacBook Pro charging) Includes 2 charging cables (USB-C and USB-C to USB-A) Lithium-polymer cells: 10,000 mAh capacity, total output of 35 W