: A specialized stick that connects your PC to the controller's display port.
You may have flashed the wrong firmware version. Reload your original stock backup file to restore functionality.
Hold the Mode or Power button to commit your changes to the EEPROM memory.
You need a specialized programming cable, often a USB-to-UART converter.
Determines how smoothly the power scales up. A longer ramp time creates a smoother, more natural bicycle feel. Throttle Mode (Current vs. Speed Control) lishui controller programming
The file that defines the parameters. 3. How to Program/Flash Lishui Controllers (.lsh)
After programming:
Factory configurations prioritize legal compliance and component longevity over raw performance. Modifying these settings allows you to tailor the ride to your specific terrain and preferences.
Determines how many pulses the motor gives per revolution. : A specialized stick that connects your PC
Use a 13S lithium-ion pack instead of 10S. Method: Modify the voltage divider resistors (hardware mod) AND change the low-voltage cutoff (LVC) in firmware from 30V to 39V. Risk: Capacitors rated for 50V may blow if your 48V pack charges to 54.6V.
Once connected, you will face a spreadsheet of hex values or input boxes. Modifying these values directly changes bike behavior. Speed and Power Limits
Improper programming can overheat your motor or fry the controller's MOSFETs. Follow these safe guidelines: Parameter Name Factory Default Recommended Safe Limit Risk of Exceeding Up to 22A (Check controller rating) Fried MOSFETs, melted phase wires Low Voltage Cutoff 30V (for 36V battery) Decreased battery lifespan / cell damage Speed Limit 25 km/h (or 32 km/h) 99 km/h (Unlimited) Motor overheating, legal infractions PAS Start Current Level 1–2 Level 1 (For smooth takeoffs) Jerky acceleration, chain snapping Troubleshooting Common Programming Failures
The simplest way to program a Lishui controller is through its paired LCD display (such as the King-Meter, APT, or Lishui-specific displays like the KD21C or LCD5). Hold the Mode or Power button to commit
E-bike controllers operate based on firmware settings that are typically calibrated at the factory to meet specific safety and regulatory standards. Key parameters include:
Connect the RX, TX, and Ground (GND) pins of your USB-to-TTL adapter to the corresponding display-port pins on the controller. Warning: Do not connect the VCC (high voltage battery wire) to your computer.
Over-programming (e.g., 25A on a 12A-rated controller) overheats MOSFETs. When they fail, they often fail "shorted," sending full battery voltage to the motor—which leads to a runaway condition and potential thermal event. Always fuse your battery at 1.25x your programmed current limit.
To wake up the controller without a display, the VCC (battery voltage) line must be safely jumped to the Key/Switch wire.
What is your (e.g., increase speed, increase torque, or adjust pedal assist)? Do you have the programming cable already?