Also — and I post this only for completeness, not to rub anyone's nose in it — the following disclaimer is found in the main User Manual itself (Phantom_3_Professional_User_Manual_en_v1.8_160330.pdf):
View attachment 56468
Which the image from the previous post came from. So, they are covering their butts. But as I said earlier, it would be nice if the mentioned the pitfalls. Something like the following:
"Note: A partially charged battery may not perform as expected. That is, if you are accustom to getting 24 minutes from a 100% charged battery, it is not necessarily true that you will get 12 minutes from a 50% battery. Also be aware that taking off on a partially spent battery that has recently flown may exhibit a sudden and critical power loss in certain conditions. It is for these reasons that we recommend a fully charged battery for each flight."
Eh?