Ca hinges do take a little break in time. Disconect the pushrod from the servo and push the rod to get a feel for how hard it pushes. Then connect the rod to the servo and disconect the other end from the control horn.
Push the rod ,with the radio off, to get a feel for how much effort it takes to turn the servo. If you are useing standard servos it should be at least twice as hard to move the servo as it was to move the control surface.
This is not an exact science but should give a good idea. Battery drain should not be a problem.CA hinges arn't strong enough to drain the battery unless the surface is in a bind. I would recomend a voltmeter to check the battery after each flight. This is a good habit to start now before you start flying high dollar stuff. later daveo