Drone batteries are an expensive and critical part of the aircraft. Learning to look after them can help save you money and make your flights safer. Unfortunately DJI guidance is a little sparse (see the official DJI "manual" by clicking on the image below)
Drones and sea water - any water at all in fact- don't usually mix. Yet in Caister, Norfolk, an enterprising lifeboat service which is independent from the RNLI, are trialling the use of Drones to assist them in their search and rescue work.