I was going to ask how long these robots can move without a power cord, but then I found this article from 2015 (https://www.bbc.com/news/technology-30919098) that says it's about an hour. If that was in 2015, I'm guessing they're above 2 hours now. Very interesting. If they could rapid-charge, and could just "take a break" for 15 minutes every 2 hours, they could be used alongside humans doing various manual tasks...
In some of their older videos they have Diesel engines powering them, so they definitely have the capability to make some longer ranges. I was unable to find any articles but if you watch the older videos their engines are extremely loud. Definitely not fully electric.
