However, a controller is only as good as its programming. Understanding —or specifically, the KT-series (KunTeng) controllers often manufactured by Lishui—allows you to unlock hidden speed, customize acceleration, manage battery efficiency, and tailor your riding experience.
Determines how hard the motor pulls when you first start pedaling.
For total control over motor performance (like Field Oriented Control/FOC), enthusiasts use custom firmware such as or CloneYCRS . Lishui "Open Source Firmware" project / KingMeter 5S
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Go from 25km/h to 35-45km/h. Method: Find the hex value 0x19 (25 decimal) in the firmware. Replace with 0x32 (50km/h). Re-flash. Risk: Motor may overspeed beyond its mechanical limits (bearing failure).
There are three primary ways to modify a Lishui controller, ranging from simple display settings to deep firmware flashing. 1. Display-Based Parameter Tuning
Alex used the or specialized open-source firmware (like the popular OS100 project). This is where the magic happens. In the code, Alex found variables that controlled the bike’s soul: lishui controller programming
: Some manufacturers lock these settings at the factory, in which case flashing (Option 1 or 2) is the only way to override them. Warning: Safety First
: These tools are difficult for individual consumers to find and are mostly sold to retailers or manufacturers. 2. Open Source Firmware (OSF)
After finishing P-settings, navigating further (or entering again) often reveals , which control deeper functionality. C1: Pedal Assist Sensor (PAS) Input Purpose: Selects the sensitivity of your pedaling sensor. Setting: Generally 02 or 07 for standard split sensors. C5: Current Management However, a controller is only as good as its programming
To help tailor this to your setup, what are you working on? If you can share your display model number , I can give you the exact button sequence and codes for it. Share public link
Lishui Electronics Research Institute is one of the premier manufacturers of electric bike (eBike) controllers. Renowned for their efficiency, reliability, and sine-wave technology, Lishui controllers are found in many mainstream and custom eBikes.
For these, programming requires either a bootloader exploit (rare) or replacing the entire MCU with a pre-flashed chip. The community is moving toward open-source hardware—like the Lishui-compatible "OpenESC" project—that mimics the pinout but runs VESC firmware. For total control over motor performance (like Field
You can set hard limits on top speed to stay legal in different regions.