"M. Stanley Whittingham, who won a 2019 Nobel Prize for his development of lithium-ion batteries, cautions that solid-state batteries may be much more expensive to manufacture than traditional batteries. He also said solid-state batteries may not have the needed power capabilities.
He expects solid-state batteries will first come to small devices such as cell phones and smartwatches, before going into larger things. Those markets can tolerate higher costs, he said, because consumers are less likely to notice a price increase on a device with a small battery, rather than a large one where the battery makes a big contribution to the overall price."