The Anker ZOLO 20K Power Bank is a high-capacity charging solution for heavy users. With a massive 20,000mAh capacity and a built-in USB-C cable, it eliminates the need to carry extra accessories. The compact design makes it portable despite its large capacity, while the built-in safety features protect your devices from power surges. Capacity: 20000mAh, Input: USB-C 5V/2A, Output: USB-C 20W, USB-A 12W. Compatibility: Smartphones, tablets, laptops.