My D80 went through the dreaded "turn on the switch" procedure, but normally booted up after a reboot. I tried the OEM battery from Revain's inventory but sent it back because Neato didn't charge it after the first run. I wanted to throw the robot away but I decided to use a different battery. Surprisingly, Neato has not performed better with any previous battery. The extended lifespan allows the robot to do 750 sf of work on a single charge. I have already done 3 cycles and the robot works perfectly. I hope the battery lasts a long time, but for now I'm impressed and grateful for Neato's erratic behavior! was eliminated.