Charge 3 devices at once! This 10,000 mAh capacity is the perfect combination of power and multi-charging capability. This 3 USB output power bank utilizes UL Certified lithium ion 18650 battery with UL1642 standards which gives it a lightweight feel. 4 blue LED lights display the how much power is left in the unit. The power bank can also serve as a flashlight with a super bright LED built in on the top of the unit.