Hello SoR members,
I'm building the $50 robot, no modifications, just the standard step-by-step method. An optional battery to get is the 6v 1400mAh NiMH Battery; I've a hella nice charger from when I purchased my R/C plane a while back and would like to get the optional battery. Here's the webpage selling it,
http://www.onlybatterypacks.com/showitem.asp?ItemID=10403. What kind of connector will I be needing for it?