RAVPower 20,000mAh RP-PB006 Power Bank (Black)

The 20,000mAh RP-PB006 Power Bank from RAVPower sports a large battery capacity alongside dual USB connectivity, so you can charge up to two mobile devices at the same time. The battery pack has a total combined power output of 3.4A, and each of the two USB Type-A ports produce up to 2.4A of power for charging a power-hungry device. For quickly recharging its internal battery, the battery pack comes with a micro-USB port that can accommodate up to 2A of power that's supplied from a USB wall adapter. Furthermore, you can keep track of your charging status with its integrated power indicators.