Another thing, I thought I read some where the transmitter beeps when the batteries become low
my tx started beepin when the bats got low but i never lost any control. i did however after many flights start seeing a loss of control when the lipo starts getting low. was not an issue in the beginning but after a while it started happening. now, any time it starts flying irratic, i bringer down n swap the lipos out n she flys good again.