This write-up documents how I fixed the Battery Charging Limit function on the MECHREVO Wujie 14XA (also known as the MechRevo Forza 14X). I did this with the help of Codex and GPT-5.6 Sol.
A bug in the charge-limit control logic was partially fixed in EC firmware version 2.08.
However, even with the "latest" firmware, the charging limit still often fails to take effect on many models. EC versions 2.12 and 2.08 are bundled with BIOS versions N.1.14MRO50 and N.1.14MRO19, respectively.