Thanks!
The Jeti has an ON and OFF brake mode which is set using the throttle sticks and is indicated by the beeps. When the Brake Mode is ON, the power to the motor cuts off at low voltage but can be restored in burst by moving the throttle stick to full off and back on. When the Brake Mode is OFF, the power is reduced to slow the motor.
The problem I'm still having is that even though I have the Brake mode OFF, the motor still cuts off. Any more ideas?