Take advantage of a great way to gain new customers by making this Energizer power bank a part of your next promotion! It has an 8000 mAh lithium ion grade A non-recycled battery, blue LED indicator lights when charging, an output of 5 Volts/2.1 Amp, and dual USB ports for the ability to charge two devices at once. This also features PowerSafe management to protect against short circuiting and over-charging, pass-through technology that allows the charger to be charged while powering up another device, and soft touch coating to protect against fingerprints. Double tap the device to check the battery level. This requires your phone's cord for use. Add an imprint and increase your visibility!