Big Battery (18650) for Chuwi Hi8 (8") Tablet

This is some rough design for a battery upgrade for my Chuwi Hi8 (Windows Tablet) to build a long lasting gaming tablet (DIY Switch for windows games).

Instructable:
https://www.instructables.com/id/DIY-Switch-for-Windows-Games-With-Big-Battery/


Printed with ABS (0,2 mm Layer), 235°C, with Brim, 25% fill

https://www.youtube.com/watch?v=zH2cHnvc8ts&feature=youtu.be