2 Outputs- 2.4 Amp Charge through USB Port & 2.1 Amp Charge through built-in Micro USB Cable Built-in Battery Capacity 5200mAh LED Power Indicator Highest output charging Product Type: External battery pack Output Connector Type: On cable: Micro-USB Battery: 5200 mAh Product Type: External battery pack Output connectors: Total 2 Detachable Cable Connector Type: Micro-USB Type B Max Electric Current: 2.4 A Capacity: 5200 mAh Cables Included: Micro-USB cable