I prefer the battery pack. If you make sure that the socket for the charger is exposed, you can recharge the battery without removing any parts from the robot. One thing to watch is that the rechargeable battery sticks out a little over a quarter inch on the bottom of the brick, making it thicker. All of the robot building instructions I have seen are for the brick with AA batteries. They don't quite work with the battery pack in. If you use the rechargeable battery, be sure to charge it up between meetings so that you start each meeting with it fully charged. Donna On Fri, Sep 16, 2011 at 12:01 AM, Scott James <[log in to unmask]> wrote: > Newby here with a basic question. We have the board and all the items > built so making progress. My son built the robot from the instruction > manual that came with the kit, 9797 in the lower right hand cover of the > instructions. Then he decided to take it entirely apart to take the > batteries out to replace with the rechargeable pack (not sure if it was > necessary to take all apart but that was what he decided to do). Before he > rebuilds it wanted to make sure the correct design for the robot for this > challenge was the 9797 build instructions. Also, with whatever design we > are supposed to build, are we better off with the rechargeable battery pack > installed? > > Thanks a lot for any input we can get on this, > Scott James > ------------------------------ > 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. -- Donna L. Cornwell Global InfoTek, Inc. [log in to unmask] -- 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.