My Code Crackers teams wants to add counter weight to the back of their robot to keep it from tipping due to a front heavy attachment. They asked if they could use a spare NXT battery since it is manufactured by Lego. In looking at rule 4 - Equipment, it depends on how batteries are classified. To clarify if this is within the rules, are Lego batteries considered electric or non-electric? "REGULAR ELEMENTS - You may use as many non-electric LEGO elements as you like, including pneumatics, rubber bands, and string, and they may be from any source or set (MINDSTORMSR/TECHNIC/DUPLOR/BIONICLET/STAR WARST/ HARRY POTTERT/etc.). Exception: Factory-made wind-up/pull-back "motors" are not allowed. Scott Rakestraw www.fllstartingpoint.com -- To UNSUBSCRIBE or CHANGE your settings, please visit https://listserv.jmu.edu/archives/vadcfll-l.html and select "Join or leave the list". -- VADCFLL administrative announcements are sent via VADCFLL-ANNOUNCEMENTS-L. Visit https://listserv.jmu.edu/archives/vadcfll-ANNOUNCEMENTS-l.html to subscribe.