Flying yesterday trying channel 30 I was at a distance of over 2 miles. I was using the sport mode with the battery at 64% and no indication of signal loss or video transmission loss. I got the message that the battery was low and the aircraft would land in 10 seconds. Immediately it went into return to home. It did not land and continued home. I did use the stick to increase speed to about 35 mph on the way home and the battery was at 47% when it reached home. The only explanation I can think of is that it was using the P mode speed to calculate the battery needed to reach home. However I have read reports of much greater distance and no indication of messages or RTH activating. Please let me know your thoughts.