Chuwi hi10 pro turn off

Hi, I have a problem with mi Chuwi Hi10 pro. My tablet turn off suddenly. I change the battery, 3.7v and 7000 mha but in android and windows the tablet turn off with 90% of battery. I charged the tablet, but i dont know what happen. sorry for my english. I appreciate your help.

Hello, maybe you can try to contact, our service department will help you out with this issue. Sorry for the inconveniences caused.