Chinese electric car maker Nio plans to build 4,000 battery-swapping stations worldwide by 2025, Reuters has reported, citing the company’s president Qin Lihong. Battery swapping is emerging as a quicker alternative to EV charging, which often still takes hours, making EVs less appealing to potential buyers. Yet swapping a battery could take about as little as it takes to fill a tank of gasoline, which may make this approach to charging even more popular in the future. Nio plans to start small, with 700 battery-swapping stations this year,…