terms of battery size and life an example case was examined the stabilization of an m24 sniper rifle power consumption for commercial off the shelf batteries was estimated based upon a prototype l lever instar demonstration platform 1 power was calculated using the power draw to hold the maximum displacement 2 19 watts at 1 18 a and 1 86v this is an overestimate of the actual power consumption since the actuator will be cycling with less of a draw at lower displacements thus the battery life and number of shots is a conservative estimate if instead a simple sinusoidal rms duty cycle is assumed then the average power consumption will be 40 5 of the power at maximum displacement in either case the battery life is determined simply based upon their watt hr rating table 2 gives a summary of the power analysis for a variety of batteries comparing battery life mass total shots along with shots per dollar and shots per gram assuming 2 seconds per shot all batteries are standardized to provide 9 v for comparison purposes the overall life of the battery ranged from 6 hours to over 79 hours of continuous operation a very reasonable battery life with this comparison the number of shots ranges from ten thousand to over 140 thousand this is significant improvement over previous work where for example even using regenerative electronics with the piezoelectric actuator only 8000 shots were possible under the 2 second shot assumption the optimal battery selection depends.