Made of aluminum, this Power 2200 mAh Power Bank is equipped with a Li-Ion Grade A battery to help you charge your mobile devices. The Jolt includes a USB- to-Micro-USB connecting cable that can be used to recharge the battery backup or devices with a Micro-USB input. Power banks are permitted in carry-on luggage only, and at the discretion of TSA agents. Please charge the power bank before initial use.