I am using wide cables, with a charger of 2.4 A, However I have ordered an usb polimeter in order to make sure how much current does the tablet get. I will tell you my updates. But my guess is that the cable should be short and wide enough to give at least around 2A to the tablet.
I have also noticed that tablet in sleep mode is consuming around 25 % of battery in 24 hours, Something tells me that CPU is not in real sleep mode, like IOS or Android tablets.
What is a “wide cable”? The short cable that came with the tablet should be fine. If it’s long (1M+) , it needs to be of good quality like the ones that are supplied with western phones (LG GX, Galaxy X etc..).