I have this information on my calculations page (in BEC & Wiring):
I hooked up a Hitec HS-5945MG steering servo (180oz-in torque and 0.13 sec speed at 6v) to a Spektrum DX3 receiver and measured the current at 6v under typical use:
- The Spektrum Receiver uses 0.06A by itself with no servo attached.
- The servo uses 0.014A when idle (not moving and no load).
- Under typical steering conditions, the receiver and servo together drew peaks of 2.4A with an average of 0.6A.
Hope this helps to answeer your question...