JK BMS Snap-In Cooling Fan Mount (4010 Fan)

Summary

The JK-B1A8S20P BMS controller can get quite warm during operation, especially under higher load. To improve cooling, I designed a snap-in fan mount that fits directly into the original JK BMS casing.

This part clips into the existing housing, so no drilling, glue, or modifications are required. Installation takes only a few seconds and can be easily reversed.

The mount is designed for a 4010 fan (40×40×10 mm) and helps provide active airflow over the BMS components, improving thermal performance and potentially increasing reliability during heavy use.

Features
Snap-fit design for the JK-B1A8S20P BMS
No case modification required
Compatible with 4010 cooling fans
Quick and simple installation
Improves airflow and cooling

Hardware

1× 4010 fan (40×40×10 mm)
Fan screws (depending on fan model)