Capacity: 74 Wh 3.7V (20000 mAh); Nominal capacity: 12000 mAh (5.1V / 3.6A); fast charge; Input: DC 5V / 2.1A, 9V / 2.1A, 12B / 1.5A (micro-USB / USB-C); DC 5V / 2.4A (micro-USB / USB-C, USB-A 2.4A); DC 5V / 3.6A (micro-USB / USB-C, 2xUSB-A 3.6A); Output: DC 5.1V / 2.4A, 9V / 2A max, 12B / 1.5A max (USB-A); DC 5.1V / 3.6A (2xUSB-A)