$NIO Inc.(NIO)$ Nio has built over 700 swap stations so far, and there have been 5.3 million swaps already. Its battery-swap technology lets car owners get a fully charged battery in roughly three minutes. It will be working with Shell$Royal Dutch Shell PLC(RDS.A)$ to build new stations in Europe next year and install 100 new swapping stations in China within the next four years. Throw in its BaaS option, and you’re looking at a massive revenue contribution from its battery business which will only grow over time.