[Mike Marandola]

We crimp our leads. Like some others have said, with the heavy vibrations and the constant swapping of the batteries, a lead is bound to come loose eventually. To prevent this we have a checkout sheet that our pit manager fills out before every match. On this sheet there is a checkbox for making sure the battery connections are tight. So I would say the best way to make sure your connections don't loosen during a match is to check them before you head to queue.