The battery holder was made with an asymmetrical design and four support beams to ensure that it would be as stable as possible and not fall or become detached from the AEV easily. The battery holder was made so that it would have very low mass, thus affecting the speed of the AEV as little as possible. Since only a very small amount of force will be needed to accelerate the battery holder as a result of its low mass, the battery holder will have a minimal affect on the speed of the AEV. The support beams were made on the sides of the battery holder to ensure that the mass was evenly spread out throughout the battery holder. Although the primary goal in the design was to obtain a battery holder with a very small mass, the mass that does make up the object should be spread out throughout the surface of the battery holder evenly. Having the mass spread out results in the battery holder having a greater moment of inertia. With a greater moment of inertia, the battery holder will be more willing to maintain its state of motion once it has been accelerated to a particular speed.
The battery holder shown above was another possible design to hold the battery. Having a smaller volume would allow the AEV to have minimal weight while still having proper function. This decrease in weight would allow the AEV to move faster and possibly more smoothly.
This is another design for the battery holder. This design is symmetrical and was designed with the intent to reduce mass as much as possible. Lower mass will allow the AEV to be lighter and move more efficiently while requiring less power to be supplied to the motors.