BEIJING (BLOOMBERG) - China's power crisis is affecting electric-car owners, with automakers including Tesla and Nio suspending some charging facilities. User apps show charging stations are down in Chengdu in Sichuan province - where the nation's worst drought since the 1960s has slashed hydropower generation at the same time a punishing heatwave has sent electricity demand surging - and the nearby city of Chongqing. Nio posted temporary notices on its app's charging map page informing owners that some of its Chengdu battery-swapping stations are "off-line" because of the "severe overload on the grid under the persisting high temperatures." Tesla turned...