iEssentials 4000mAh Power Bank - For Smartphone, USB Device - Lithium Ion (Li-Ion) - 4000 mAh - 3.40 A - 5 V DC Output - 5 V DC Input - 1 x - White

When life gets busy, a dead battery should be the last thing on your mind. Enter the 4,000mAh Power Bank with UL Battery Pack (White) from iEssentials which provides 2 full charges for smartphones. You can keep track of remaining power with the LED indicator. The included micro USB to USB cable lets you recharge at your convenience.