RealPower PB-15000C External Battery Black, Green 15000 mAh – External Batteries (Black, Green, Mobile Phone/Smartphone, Tablet, CE, TÜV GS, 15000 mAh, USB, 54 WH)

Mobile charger for charging smartphones and tablets
Capacity: 15,000 mAh
Charge up to three devices simultaneously
Digital display with capacity indicator
Input: 5V, 2100mA (Micro USB and USB Type-C)
Output: 5V, 1000mA (USB 1), 5V, 2100mA (USB 2), 5V, 2100mA (Type-C)
Total Output: 5V, 3100mA
USB Type-C port can be used as input or output
Protection against short circuits, overcharging and discharging