Ford's battery storage push is incremental at best, yet it added 40%, or $20B, to the market cap since the May 18 announcement. Using Tesla Megapack economics, Ford's hoped-for 20 GWh a year from 2028, after a $2B investment, would mean $3-5B revenue and $1-1.5B gross profit, raising gross profit dollars only 6-10%. That assumes full demand, Tesla-like efficiency and no price erosion, unlikely given battery history, Tesla's new 60 GWh Houston plant and Ford's lack of scale or balance sheet. x.comÂ