The Spare 10000 mAh Power Bank is your ultimate on-the-go power solution. Featuring a high-capacity 10,000 mAh/37Wh Grade A Lithium Ion battery, you can quickly and easily charge up to three devices simultaneously with a max output of 5V/2.1A. Convenient LED indicator lights keep you informed of the power bank's charge level, while the built-in flashlight comes in handy for those unexpected situations. The included USB-to-Micro-USB connecting cable allows you to recharge the power bank itself or other devices with a Micro-USB input, such as Android Smartphones from Samsung®, Motorola®, HTC®, Nokia®, and more. Power banks are permitted in carry-on luggage only, subject to TSA agent approval. Remember to fully charge the power bank before its first use for optimal performance.