I am currently using 2 - 3S 2200 Mah (In parallel) li-po batteries on my hexa which give me about 7.5 minutes of flight time.
I have tried using a 4S - 5000 mah li-po but flight time was very short and the battery became very hot. When checking the battery post flight, there still appeared to be 60% of power left in it. I had this issue with two different batteries.
I have a couple of 4800 mah 5S (45) li-pos' which I would like to try these batteries on my hexa.
My escs are rated up to 6S - would the ArdupilotMega 2560 be OK at this voltage ???