[hhsectech]

Hate to be that pragmatic engineer...but wouldn't a decent balance between range and fast charging be nicer? I'd like to see the graph for capacity vs charging time for these cells.

I'm sure like any battery the charging gets slower over time as the battery warms up, so finding the sweet spot would be nice.

I'd quite like to buy an electric car and select an appropriate power bank based on this.

Also, why do the packs have to be permanent? Why not have the ability to add or remove modular cells as and when needed? Just add the capacity when you need it. Plug the unused cells into your solar array when you aren't using them.

That opens up a few options. Firstly, you can choose to power your house or your car, or of you need to get to work and you forgot to charge, you take the dead cells out and swap a fully charged set in. Leave the dead ones charging at home.

Have a modular system where battery swapping is possible doesnt seem to be a system that EV manufacturers have considered for some reason.