In the manual for the P3A, it says "Don't take off with a battery less than 100%" (or something very similar to that). So am I really risking something if I take off with a battery at 70% or 65%? Does the take-off portion of a flight strain a battery so much that it is particularly dangerous to take off with a battery closer to 50% than 100%? I try to fly responsibly and cautiously. I would rather NOT fly over people or houses or cars if I DON'T have to. (What's the saying; "There are old pilots, and there are bold pilots, but there are no old bold pilots") So I often will put the craft up and fly / photograph one side of a park quickly, bring the bird down, walk it over to the other side of the park, and then put it up again. So that second time I put it up, I will be taking off with 60% or 70% battery life. Is that wrong? Yes, I know I COULD fly it over people and houses (and I sometimes do) and I know that the possibility of the P3A falling from the sky is low as long as I have done my pre-flight check. Still I would rather error on the side of caution. My flights tend to be short; maybe two or three short flights of 5 to 7 minutes on one battery, then change to my second battery. Thanks in advance.