[Al Skierkiewicz]

We can't really answer this for a particulr robot but let us remember that there are robots (many robots) that have inefficient designs that do run the main battery down to nothing in a single match. I have had teams that were actually proud of the fact that they killed a battery every match. With that being said, a power convertor fed from the main battery is still going to fail when a current demand on the main battery causes it to go to a couple of volts during a shoving match. Even with boost buck convertors, a 10 volt swing on input will not reliably keep the backup power up at 7.2 volts. In this case, two voltage sources are the best solution.