The Helio 5000 mAh Solar Power Bank features a 5000 mAh/18.5Wh rechargeable lithium polymer battery. It has a solar panel, flashlight and comes with a hook you can clip to your bag. Dual USB-A Outputs: 5V/2A. This power bank comes with a 39-inch USB-A to Type-C cable that can recharge the battery backup or charge devices with a Type-C 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.