So the thing about the EV math, is you need to pay upfront for a lot of battery capacity. If you have an EV, at today's utility rate, the cost per mile on EV is going to be more depreciation than the ICE car, yet the energy cost is going to be lower for the ICE car. Also once the battery wears down to a very low range there is not much incentive to keep the car and replace the battery.
So the easiest solution is really to lease and swap the battery. Without a corporate-owned battery it is very hard to use the battery to its full potential and it is very hard not to feel attached to your own $15k investment. Nobody wants an old battery when they swap their own out, but if it is a corporate-owned battery you can swap it with no emotional attachment. You can also have a spare at home charging if you wish, while you drive your car, or go to a "gas station" for a quick swap. Imagine if you can plug in a 50lb battery and let it charge when you go to work, actually let you charge 3 50lb batteries all over your house as soon as price is low (say 7am to 10am, because everyone will charge their EV at night and nobody wants to charge the during morning commute). You don't need 240V charging if you can get all your 120V used across your house (say you have 3 separate 15A circuit breakers), 24 hours a day. You also don't need 240V if you can have a few spare in the house or in the trunk. You also don't need them to last 10 years if you can easily swap them in and out, just upgrade your battery and keep the car.
See, all the problem we think we have is just because we are not thinking outside the box, as soon as we have user swappable battery we don't need them to last 300 miles or 240V charging (actually the higher current is just as important as 240V, since P=IV, and what helps in the US is 240V are designed for high current appliance and most of them are at least 30A instead of 15A), and as soon as we have battery leasing we don't need them to last 10 years.
This is a good idea but I don't see if working this way for a bunch of reasons.
Who pays for the swap stations? Since each brands architecture is unique there can be no universal swap stations.
Who buys the packs for swapping? Packs aren't standardized - how many are you going to buy?
How do you let people know what you can swap? Sorry Im out of those batteries today
How do you make your money back on packs?
High capacity connectors are typically are only good for a very low number of i/o cycles all current batts would require serious re-architecting.
3-150LB batteries isnt getting you very far - a current model 3 pack weighs about 1200lb.
The price per KWH is falling dramatically as the both the capacity AND recharge time is improving.
I just cant see past the issues and Ive got a pretty open mind.