Where do they sell minibook batteries

please help me. where do they sell minibook batteries

Bought one from AliExpress but is not detected from Minibook 8. Also bought one from Batterystore. Also not detected. From Chuwi Support no answer.
Reset EC, Flash BIOS, all not working…
Then i openened the new battery, relace the Control Board with the original Chuwi Board and then everything is fine and works…
So the problem is that only the ORIGINAL Contoller is working with the Minibook.

Hope this helps

At the link bellow you can buy anything you need for Chuwi Minibook.