[Al Skierkiewicz]

Isaak,
A larger battery would/should work fine. One of the sealed, no maintenance batteries is the best choice. However, most of the components in the electrical system are chosen for their ratings based on intermittent duty, i.e. two minute matches. With the derating that was chosen during design, the PD and other components ought to be able to demo most of the day without problems IF cool down periods are religiously scheduled throughout the day. Often teams who take time to change out a battery will give a cool down during the change. Please remember that heat rise in wiring, motors and motor controllers are the most significant problems. These are made worse if the robot is in the sun, in hot weather or both.