Hello, my name is Chris Briere and I am a long time VEX participant. I am in the process of developing a product for batteries in VEX robotics and it would really help me if you wouldn’t mind filling out the following survey (see link below). It’s only 9 questions and will only take you 2 -3 minutes, and if you take the survey you will be entered in a drawing to win the first product that is completed. Thank you in advance,
Chris Briere.
http://www.surveymonkey.com/s/P77SJY3
Obviously we have no flexibility during competition as to which batteries and charger are used, that is part of the rules.
Outside of competition there are no restrictions, I use a different type of Tenergy charger (here) that allows a little more control and feedback than the standard VEX (which looks like a rebadged Tenergy anyway) charger.
There are also some pretty good battery testers available, here is one (Battery Beak) that does a nice job.
I’ve deleted one post from this thread for being unhelpful and off topic.