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My Battery Charging Limit Fix for the MECHREVO Wujie 14XA

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.

1. What Is Wrong with the BIOS/EC Firmware?

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.

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MECHREVO Wujie 14XA (Ryzen 7 8845HS) Reverse-engineering

This log documents ACPI calls and driver calls found through reverse engineering the MECHREVO Wujie 14XA laptop (marketed as 机械革命无界 14X 暴风雪版, or Mechrevo Boundless 14X Blizzard Edition).

I am playing with:

• BIOS version: N.1.14MRO17
• AP (control center) version: 5.56.51.17

"How did you capture these calls?"