[Al Skierkiewicz]

Zack,
You need to be a bit more specific as to what actually failed. Many teams have problems with the hardware coming loose on the terminals of the battery. There are a few reasons for this. Never lift the battery by the wires as that loosens the hardware and cracks the battery terminal internal to the battery. You can eliminate the loose terminal problem by using a star washer between the terminal and the cable terminal you use. The washer prevents the two terminals from sliding past each other and that eliminates the hardware problem. (Use a star washer on the nut as well to keep it all tight)
If the Anderson plug pulls apart, just use a tywrap around the connector parts to prevent them from pulling apart.