The Roswell Test Flight Crew are on hand the NAB show to report on a variety of UAV developments. In this episode, the Roswell Flight Test Crew speaks with Kellie Zhang, marketing executive with Energen, a manufacturer of charging stations for drone batteries. the company’s latest product: the DroneMax portable battery charging station. In development for the past year, the DroneMax will start shipping at the end of May. Their initial products will charge drones that use three- and four-cell batteries, such as the DJI Phantom, Yuneec Typhoon and 3DR Solo. At NAB 2017, Energen showed off a compact charger specifically for the DJI Mavic, as well as an adapter that will allow its its product to work with drones that use six-cell batteries, such as the DJI Inspire.