Gomadic Portable External Battery Charging Kit suitable for the Sierra Wireless 4G LTE Tri-Fi Hotspot Includes Wall, Car and USB Charge Options Specification: Sierra Wireless 4G LTE Tri-Fi Hotspot Supported, Dimensions: 2.0 X 4.0 X 0.5 inches, Power Input: 110-240 VAC, USB Output Power: 5.0 VDC Gomadic Kit includes ability to charge the Sierra Wireless 4G LTE Tri-Fi Hotspot battery from a variety of power sources including AC wall outlets, DC car cigarette ports, or any standard USB port Intuitive color coded LED light indicators display when the battery is properly connected, in charging state, and fully charged. Super easy to use! Simple operation. Quick start instructions provided. Gomadic phone and email support available for additional assistance if required. Ideal accessory for the frequent traveler!