NIO's two new battery swap stations, located in Xingtai in Hebei province and Taiyuan in Shanxi province, went into operation on July 18, bringing the total to 312.
The Xingtai station is NIO's second second-generation battery swap station in the city, and the third battery swap station there, located near an upscale four-star hotel.
NIO's new battery swap station in Taiyuan is its third second-generation station there and the company's fifth in Shanxi.
The second-generation battery swap station can hold 13 batteries and provide up to 312 services per day. Cars can park automatically and complete the battery swap in 3-5 minutes.
As of July 19, NIO has 312 battery swap stations, 212 Supercharging stations, 393 destination charging stations, and access to over 380,000 third-party charging piles in China.
NIO started to push the mystery box to owners in the app on July 7, and the 10 luckiest users can decide the battery swap station construction area.
Last week, the first lucky winner has appeared, an ES6 owner from Chengdu, Sichuan Province.
The second battery swap station brought by mystery box has been decided in Xining, Qinghai, NIO said on Sunday.
NIO originally planned to have 500 battery swap stations in China by the end of this year, but at the first NIO Power Day event on July 9, the company's co-founder and president Qin Lihong announced that the target had been raised to 700.
On July 9, NIO said that only 29 percent of customers currently have a battery swap station within a 3-kilometer radius, which is unsatisfactory.
By 2025, NIO hopes to have 90 percent of customers within a 3 km radius of a battery swap station.