The batteries on my MA2 have always given me the "return to home point / low battery" alert at about 15%. Didn't really matter how far out I was. That was always plenty to either manually or automatically return to home. Today on 2 different batteries the alert came across the screen at 30% percent. I cleared it and flew fine until I landed it manually at about 15%. The drone was within 100 feet of my location both times with nothing in the way between it and the RC. The last time as I was landing it 15% it gave me a low battery-landing message as it was about 2 feet from the ground. Is something going on with the drone? Something with the batteries? Has anyone run into this before?