The Dart 10000 mAh Power Bank features a 10,000 mAh/37Wh Grade A lithium ion battery, and LED indicator lights. You can charge up to two devices with a maximum output of 5V/2A, providing convenience and efficiency. 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.