China's CATL is investing heavily in expanding electric vehicle battery swapping stations in the country next year. Battery swapping allows EV drivers to receive a fully-charged battery within minutes, but it requires the right technology and widespread EV adoption. China, with its high EV adoption rate and government support, is an ideal market for battery swapping. However, the technology has faced challenges in other countries due to low EV adoption and lack of infrastructure. Battery swapping could help reduce EV costs and make more sense for ride-sharing or fleet vehicles.