Have to wonder what the recharge time is, if it takes that long to discharge.
it all depends on how much heat is generated during charging. If the internal resistance is low, then not much heat, and you can charge it at much higher currents -- that means "faster".
Part of the problem with the present generation of batteries is that they generate a lot of heat when being charged, and you dare not let them overheat, so you are limited in how fast you can charge them.
For a first approximation if it holds five times the charge it will take five times longer to “fill” at the same current.
The present limit is the current available in your household supply - the 30A 220v dryer socket equivalent.
So if the Leaf needs 8 hours for a full charge the new battery will need about 40 hours for a full, but bigger, charge.
A lot more charging infrastructure will be needed - invest in copper...:^)
One thing for certain; you won’t be charging it on 120VAC house hold current. You have to put in to a battery more than you will take out of it.
You have to put in to a battery more Kilowatt Hours than you will take out of it to push your car down the road. A battery that can store that much power will need to have at least a 220VAC power supply to charge the battery in a reasonable amount of time. No wimpy lamp cord charger is going to charge this monster.