Scosche MagicMount PowerBank Micro-USB 4000mAh Battery Pack Kit (3-Pack, Black)

Connectivity
Input Charging Port Micro-USB
Output Connector Micro-USB
Battery
Battery Chemistry Lithium-Ion
Capacity (mAh) 4000 mAh
Power
Port Output Power 5 V, 2.1 A
Packaging Info
Package Weight 0.49 lb
Box Dimensions (LxWxH) 6.95 x 3.3 x 1.75"