@zontex Thank You So Much.

Hi @m5stack
I'm a seller in Thailand and now I have M5StickC about 10 Pcs.
And all have the same problem is battery can't be charged and display error message "Error 22"
After I've charged for all-day it still showing an error message.
Or is it possible to use it while connecting the USB cable ? (don't mind about the battery)
Thank You in Advance.