This controller isn't just about hardware; it's highly integrated with software.
Plug all wire harnesses back into their designated ports. Connect the high-voltage motor wires tightly to avoid high-resistance heat accumulation.
It is a common replacement part for scooters that have suffered water damage or display failure. You can find original replacements on marketplaces like AliExpress Firmware Identifying:
revision is critical; different versions (like V2.0 or V3.0) may have different pinouts or software coding (e.g., ), making them incompatible with certain motor controllers. kcq-yb-yx01-v4.0
: This is almost certainly the brand, which stands for KeChuangQi (Shenzhen KeChuangQi Technology Co., Ltd.), a known developer of electric scooters and controllers. They are the company behind the "KCQ Scooter" control app.
The KCQ-YB-YX01-V4.0 Go to product viewer dialog for this item.
is a 36V brushless motor controller designed for smooth, quiet operation. Rated for 350W with a 15A current limit. This controller isn't just about hardware; it's highly
kcq = Key Control Question (the spine of the checklist) yb-yx01 = our product line / project ID v4.0 = fourth major revision, fully backward-documented
Integrating or replacing a version 4.0 motherboard requires precise wire connections. The standard layout uses standard plugs to ensure clean system communication:
The robust feature set of this module makes it suitable for three primary industrial scenarios: It is a common replacement part for scooters
: A small 5-pin white composite connector tracking exact motor position.
Displays current speed, battery life, gear mode, and error codes. App Control: