> Batteries are scheduled to become so cheap

Wait, you can schedule price drops?

https://www.nature.com/articles/nenergy2017110 / https://www.cell.com/joule/abstract/S2542-4351(18)30583-X make the battery takeover look like a foregone conclusion, but past performance is no indication of future performance.

Also what about the systems to turn the batteries into something useable? It is telling how cheap lead-acid batteries looked on the first paper's Figure 2, yet overall system costs were vastly higher.