John,

If you use all the sensory options available, and build those into the robot and the program, I think you'll find the rechargeable battery to be the best bet.  I have found that the capacity and performance to be more consistent - and you can build a more complex robot without worrying about having to disassemble it every couple days to change batteries.

Sent from my iPad

> On Nov 25, 2014, at 5:54 AM, John Davison <[log in to unmask]> wrote:
> 
> As part of our rookie lessons learned for next season, does anyone have thoughts about the pros and cons of using rechargeable vs. regular batteries?  Early on, we found that our robot performance varied quite a bit based on how fresh the batteries were, and we seemed to be burning through lots of regular batteries.  So we switched to rechargeable batteries soon before the competition, but then had to tweak our programming because the output of rechargeable batteries is different from regular batteries!  If we stick with rechargeable batteries for our next robot design, are there any potential problems or downside that others have experienced?
> 
> John Davison
> 
> Sent from my iPhone
> 
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