Hi, I bought this tablet online only 8 months ago and now the battery icon has disappeared…and the tablet can only work is it`s connected and fed by the external power supply.
Can anyone help, please 
?How does the warranty work?
Thanx, Laura
Go to the device manager, open the “Batteries” section, if you only have a Microsoft AC adapter, then most likely the battery is simply disconnected.
You can try to reconnect the battery or write to service@chuwi.com