[avianlyric]

I also wonder if batteries can be commoditised the same way solar panels have been. Battery chemistry and manufacturing processes seem to be much more complex than solar panels, additionally there seems to be significantly more trade offs to be made by car manufacturers, than solar panel installers.

[epistasis]

I think that they will eventually become components not unlike current solar panels and inverters. I wouldn't underestimate the complexity of solar panels, there's massive continuous innovation just as there is with batteries.