It will never replace a turbine helicopter for long flights of say 200 nautical miles or more, as battery weight verses total energy stored is quite simple, Jet-A wins, battery loses. It is all about energy density per pound and Jet A always wins. It might have an application for short hops. British Airways years ago used Sikorsky-S61s to do the short hop from Heathrow to Gatwick for passengers at great cost to British Airways. It was all about keeping the customer on connecting flights from Gatwick and not losing them to another airline.
I would not ride in this machine until I saw data on engine out performance due to battery failure or more important can they keep the aircraft stable with one or two engines out on the same side.
I’d also want to see how well the batteries handle a hard but survivable landing or controlled autorotor ground stop (and bounce).
“... or more important can they keep the aircraft stable with one or two engines out on the same side.”
That would be like an ‘everyone dies’ engine failure on an Osprey ..