How many batteries do you take to competitions?

[gwatton]

This year we took 4 legal batteries for field use and two or three old practice batteries. We barely made it by with just the four at Las Vegas this weekend. We had to borrow a few for the elimination rounds. We try to take four chargers as well. We are definetly going to get some more for next year.

We also had a problem with batteries going bad. They seemed to work fine beforehand, but once we got on the field they died almost immediatly. The only way to prevent this is to run them in practice or old robots before competition.