The increased range of up to 1000 miles is rarely necessary in everyday life and longer journeys can usually be planned in advance. However, the additional battery capacity is a weight that consumes a lot of energy in everydays life. It would therefore be extremely interesting if the car is delivered with a (permanently installed) basic battery and the additional capacities could be easily installed for different ranges (e.g. by opening the belly). If the batteries are not required, they can be used, for example, as a buffer storage for a solar system, or they can be rented for longer journeys from a local service provider.
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https://www.aptera.us/forum/main/comment/601ae0a309819d0017a3ebad removing battery also allows charging at building socket at work, hotel, etc so you can charge at places with no car charging infrastructure, although charge fillup is not as much as if there was charging infasturcture, it could be enough for a small unplanned for trip, and it can make up for "vampire drain" as exists in teslas in terms of having enough range to get somewhere
Great ideas! I think it would add another layer of complexity tying in the removable battery to the BMS and cooling circuit, but certainly not impossible. But I think one would have to evaluate where one would be driving and how well supported the roadways are with DC Fast chargers. How often would one need the 1000 mile capacity? It would be like installing too many solar panels just to break even with electricity.....really too many panels to justify the cost. I've often contemplated getting a pickup truck for the convenience of hauling loads. But when I sat down and figured it out, it was cheaper to rent or borrow a pick-up truck/van for the few times a year that I really needed it. Wasn't worth the extra insurance and maintenance for something seldom used.
Settings up a battery network for a custom battery has been tried and failed and I would assume is expensive. Certainly there really isnt any reason to get a 1,000 mile battery over a 600 mile battery especially when the charging on the road is fast. On the other hand the $10,300 difference between the 2 options for 40 kwh of battery is a whole lot cheaper than any solar battery on the market. A 10 kwh battery is around $6,000 wholesale without install, markup... If thier could be a bi-directional charger to power a house in times of emergency or an on-board small panel for a few extension cords, this could be a lot more cost effective than a battery system with a solar system. I'm a solar installer.