This is definitely possible - see Tesla’s prototype battery swap station they ran for a short while off the I5 in California. Inventory management would be a n

This is definitely possible - see Tesla’s prototype battery swap station they ran for a short while off the I5 in California. Inventory management would be a nightmare though, considering the range of physical dimensions, weight, battery specifications etc. Often none of these things are standard even across a single model range let alone the entire industry. When the batteries are often over 1000lbs and large, it’s difficult to carry a range of spares. I’d imagine it also might be a pretty tough job even in the easiest cases for a single roadside mechanic to perform, given the sizes and weights involved. There’s also the thorny issue of battery health - what if the replacement has more or less charge cycles than the existing battery? This can materially affect the resale value of a vehicle. At least cellphone batteries were tiny and cheap.