Two and a half years after first sharing plans to implement a 150 kWh solid-state battery pack in its EVs, NIO appears poised to finally do just that. The automaker’s digital user manuals now feature specifications of the solid-state pack, supplied by WeLion – debuting on the upcoming ES6 SUV. The additional supports recent promises from NIO’s chief that customers in China will be able to select the energy-dense pack as early as this month. More…