Absolutely thrilled at how easy it is to program the paranormal self-investigating project Rad robot using the EZB-4 system . All I can say is for the small cost of the EZB computer and an old 1990 toy robot bought for a few dollars at a flee market,this is amazing guys! thank you so much for developing this system! i am ready for actual out door investigating at some of the most Haunted locations in Canada ! is there really an after life? I have many doubts but if I start catching evidence this summer at the crazy haunted places I go,it will be thanks to the EZ robot team! any suggestions for the best battery to use that lasts longest? lipo 11.4 volt? 12 volt lead acid wheel chair battery? my battery packs work but a huge effort to charge them all separately all the time to get the good 6 hours needed over nights.Tonight I'm out at this crazy haunted campground,let's see what happens!