Yes, digital servos and higher torque servo requier more juice. Digital high torques draw a lot of amps, high torque servos alone arn't to bad. My funtana x50 has hs 475 wich are kind of high torque servos. 4 of them burn anywhere from 150-200 mah a flight. My stinger .50 heli has high torque digitals and i burn up 600 mah a flight.