For the battery tests, we tested and recorded the voltage of the battery, then ran the AEV on the track, and repeated this 4 times. This shows us that running the AEV uses less than 0.01 V each time the code was executed. This also shows that the AEV will become less powerful after each run due to the decreased voltage. While the difference in efficiency will be very small, after a long session of use the test runs may not be repeatable once the battery is recharged.