13Hrs Extra Battery Life Universal Device Compatibility Charge 2 Devices at Once 15W USB-C Output 10W USB Output 2Hrs Rapid Recharge LED Battery Indicator Ultra-Slim and Lightweight World-Class Safety Features Battery Type: Li-Polymer Battery Capacity: 4,000mAh Max Output: 5V/3A (15W Max) USB-C Output: 5V/3A (15W Max) USB Output: 5V/2A (10W Max) USB-C Input: 5V/2A (10W Max) Protection: Short Circuit/Overcharge 3.7 x 1.7 x 0.7 in. 4 oz