Zenbook laptop does not fully charge, saying `67% available (plugged in)`

I'm using a UX330U Zenbook and I can't get my battery to be 100% charged. It keeps saying 67% available (plugged in) . I'm using Win 10 and I've completed all the forced updates by freakin Microsoft. I followed the 2 tips here - https://www.drivethelife.com/windows-10/fix-laptop-battery-not-charging-to-100-windows-10.html and none worked. Can't do tip #3 cos Zenbook battery is non-removable. Battery report via powercfg command says... 2020-07-1019:31:57 Active AC 67 % 19,115 mWh

Question by cilapo1541 on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.