DUDU-Meng yes, everytime, thats why i turn on this function. So the acc power will become batt + and vice versa. This will maintain the clock setting on my previous mekede m6 pro (7260s) running DUDU OS 3 (with the old setting UI). With the DUDU 3.5 and 3.6, i only manage to experience this when purchase DUDU6 and the setting page has revamped and I couldn't find this setting anywhere, even in factory setting.