I saw this discussed on a thread about the Phantom 2, but not the 3. How often do you let your Phantom cool down between flights? Lets say I have 3 batteries, and fly consistently back-to-back. Is this more wear and tear on the motors than normal? or does it not really matter how many battery changes & flights you perform without a significant rest. Just curious, I'd like to add a fourth battery, but would I need to let the bird cool down anyway?