The PowerXTD rechargeable mobile power bank's lithium ion batteries give you 2,200mAh of backup power for your mobile phone or other device. It features aluminum construction, LED flashlight with flashing mode, S.O.S. mode, charging indicator light and includes a micro USB cable to charge the power bank. Output is rated at 5V/1A. This product has undergone the most rigorous testing in the industry and is UL® Certified, and BC (California Energy Commission), and FCC VOC certified.