Get more flight time from your Inspire 1 by bringing along extra Intelligent Flight Batteries. With built-in charging and capacity sensors for safe use, each TB47 battery gives you up to 18 minutes of flight time. When in flight, remaining battery power is shown live, letting you know how long you can continue to fly. Algorithms calculate the distance of your aircraft and estimated time to return home, letting you know when it's time to fly back. The battery reports the voltage of each cell, the total lifetime charges and discharges, and the overall health and battery status. LED indicators tell you remaining battery capacity or charger status. They are visible from the exterior of the aircraft.