> a 9 hour work day out of them A _continous_ 9 hour work day. You could alternatively just program it for a 24 hour work cycle, and get the same 9 hour work d

> a 9 hour work day out of them A _continous_ 9 hour work day. You could alternatively just program it for a 24 hour work cycle, and get the same 9 hour work day on a single battery in segments instead. EDIT: Nevermind. I assumed that it had the capabilities to dock and charge by itself (just like any robot vacuum does), but apparently it doesn't.