In theory you can fly for 23 minutes and that equals to 16 km. OFC I would never plan for 16 km as you will expect wind and other issues. Is it safe to plan for 10 km? In 54 kmh or does it use a lot more power pr km in that speed? How long trip would you plan to do, still beeing safe to have enough battery capacity to return safely home? I have never sent it on a Litchi trip before.