How good is the rc feilun boat with a 540 racing motor would a 7.4volt 1500 mah battery be able to handle the motor please guys please let me know asap
You need to know more specs, such as the number of turns or kV of the motor and the specs of the ESC. Usually a 540-sized motor should do fine with that voltage, it's up to the ESC on whether you can run that battery.
It sounds to be old-school stuff there. A 540 can motor can be a cheap one used in stuff like 12-volt air compressors. With a 1500 pack it's not going to be a speed demon. It might be a 25 MPH boat.