Bought two new batteries recently from amazon, from a reputable seller and they are DJI OEM not knock offs. Fyling with one today, and its around 52F(11C), 52F(11C) wind chill, and only a 5MPH(5KPH) wind speed, and noticed something weird with one of the batteries. Flew for around 9 minutes, and the battery on the FPV screen was showing 11.3V 50%. All of a sudden, didn't do a single thing radical, just hovering, and flying back and forth not even full throttle and the percentage jumped from 50% down to 13% so landed the drone immediately. Do you think there is something wrong with this battery? Should I see about getting a replacement from Amazon? Currently charging to full then going to see what the battery cell levels are at. Thanks!