I've seen a few threads where people have taken off with a full battery, then come back and land with, say 60% to 70% battery left. Then when they restart for a second flight on the same battery they lose mass voltage and crash. Everyone's advice to the people that this has happened to is "don't power down the bird or rc in between flights". OK, fair enough, but here is my question. If I go up, and don't like the results I am getting with the ND Filter installed, and keeping the bird fired up, how much am I stressing the gimbal when swapping lens?