I´ve been flying multirotors now for over 4 years but just bought my first Phantom. 3 PRO model W323A with all the latest firmwares updated. I did the first flight yesterday before dawn and I noticed battery came out really hot, unconformable to hand but I didn´t check the battery temperature during flight. Today another quick flight just before the rain started and same thing, battery came out really hot but again I forgot to check temperature in the app. Wookong, Naza and A2 doesn´t have this feature, so I´m not used to. But in all this years I never seen a multirotor battery getting so hot! Now at home, checking all the DJI GO detailed configurations, I noticed the battery temperature was reaching almost 50C while the Phantom was sitting on the room table with power on. After trying to find what could cause such battery heat I noticed the Vision Positioning module was so hot that almost burned my fingers when touching the ultrasonic sensor! And the VPS wasn´t even active in the app as I had it switched off long before noticing the heat. I´m sure this isn´t normal, or is it?