[pfreivald]

We always have a minimum of ten "good" batteries on hand -- it's something I got caught off-guard with as a rookie mentor in 2001, and not something I intend to ever do again.

Budget for extra batteries and chargers, and build a battery charging cart. Number or name all of your batteries, and include them on your pit checklist between matches. (Keeping track of the voltage going on and voltage coming off each match can help keep you ahead of cells that are dying for one reason or another, in addition to keeping your 'bot from dying in the middle of a match.)