okay and and when are the batteries used are they is is it used up sort of like is the four in the beginning used up immediately or we actually talked a lot about how they should consume the batteries if it should be like over time or if it should be when it docks at a station and I think we ended up deciding that once you dock at a station it consumes batteries for that trip between those two stations okay so it consumes it all after the fact yes exactly, so contrary to what some people believe where if you have a dog just circling around the station just waiting to dock it won't actually drain any more batteries oh okay that's interesting that's good to know apparently there might be some bugs with