Indicating bad battery, BUT I have 3 old and 2 slightly used batteries and they all make my p4/p4p flash this code. I have noticed while flying at my house it indicates flying in a class c air space do not fly over 685 ft. I never do! I’m under outer ring 8 miles of airport but get this when I go outside of class c airspace to fly I get NO CODES FLASHING! My be the new geo fencing update that I had installed, anyone else have a true answer to this?