First, how long is the vacuum supposed to last. I know that it has a 12 month warranty, but what is the lifetime expectancy. With the Robovac 20, it says "years," but I am failing to find anything mentioned with the 11. Second, does the vac map your house? Also, can someone tell me how I can buy replacement parts (batteries) for it? And finally, is there any Eufy app integration with it (like with the scale and ear thermometer)? Thanks!