>>276058816
I don't know. What was the reason it took that long for commercialization of Li-ion, and what are the specific factors that limit solid state battery technology? Hard to say how long it'll take as it probably depends on a lot of factors here, including luck based on almost unpredictable discoveries that remove any blocking factors. However, there is a lot more money and research today put into many things, so it wouldn't be unreasonable to expect that technology will advance quicker.