Chinese batteries are all over the place in terms of quality. Just because Tesla had problems does not mean those problems are insurmountable. They most likely

Chinese batteries are all over the place in terms of quality. Just because Tesla had problems does not mean those problems are insurmountable. They most likely would have been figured out all problems if they did not have the option to just buy batteries elsewhere. Chinese battery companies benefit from cheap labor, lax environmental regulations, and government subsidies. I think other countries aren't making many EV batteries for the same reason they aren't making much of anything else: because it isn't possible for them to compete with China on cost (yet).