I don't have any information on this, but with the roborock application, you're warned when the water runs out. This means you can top up the water in good time.

The S8 Ultra does that too and that's not helpful... No deal without a fixed water connection. When asked, Roborock itself does not know if and when the model with water connection will be sold in Europe... Nevertheless, both models are advertised via influencers, although one is not sold at all... Missed opportunity to pick up many people who are annoyed by the constant refilling of water and emptying of dirty water...