Hi guys, With the crazy amount of batteries lithium-ion these days (telephone, tablet, cameras,...), I want to be all square and have a doc ready in case of trouble in the airport as I want to travel with my Phantom 3. IATA splits Lithium Batteries in 3 categories 1- <100Wh 2- In between 3- >600Wh 1: usually inside the equipment the batterie can go in checked or hand luggage. As spares, there is a limit of 20 sometimes and can only go in hand luggage. 2: same as 1 but usually the limit of spares is 2 3: forbidden unless very specific (disable chair) So I now have a database of all batteries I am travelling with, just in case I encounter issues. As an example, the battery of the aircraft is: 4480 MAh / 15.2V / 4.48*15.2=68Wh, category 1 For the remote controller, I cannot find the full spec, or I do not understand it, can you help? Ok it is 6000 mAh, but online I can read "working voltage" 1.2 A @ 7.4V. What does this mean? How do I calculate the Watt Hours from this? Thanks!