SW-U LCD Display


Comfortable appearance with enduring popularity. The display adopts piano paint technology, with a comfortable appearance and great texture, greatly improve the assembly effect and grade of the whole electric bike.

Additional information


103.8mm * 61.4mm * 53.6mm


Battery, Headlight, Mile/KM, ODO, PAS Level, Speed, Trip, Trip Time, Walk Assistance, Watt




22.2mm, 25.4mm, 31.8mm


24V, 36V, 48V

USB Charging

5V/500mA, With, With 5V/1A, Without


CE, EN15194:2017, IPX6, RoHS



SW-U LCD Display
    Add a header to begin generating the table of contents

    SW-U eBike LCD Display_User Manual_TopEParts

    1. Preface

    Dear users,

    To ensure better performance of your e-bike, please read through the SW-LCD product introduction carefully before using it. We will use the brief words to inform you of all the details (including hardware installation, setting and normal use of the display) when using our display. Meanwhile, the introduction will also help you solve possible confusion and barriers.

    2. Appearance and Size

    2.1 Material and Color

    SW-LCD housing material: PC. And the color of the housing is white or black. Working temperature scope: -20℃—+60℃, the shell material can ensure the normal use and good mechanical performance of the products.

    2.2 Display Size and Installation Size(Unit:mm)

    SW-U eBike LCD Display_TopEParts eBike meter

    3. Function Summary and Button Definition

    3.1 Preset and Default Items

    SW-LCD user settings include wheel diameter (18-28inch); max speed; LCD backlight contrast; choice of the display unit.

    3.2 Display Figures:

    Display content: battery capacity, motor power ratio, riding speed, riding distance, power, PUSH cruise control, and error code display of the electronic control system.

    SW-U eBike LCD Display_TopEParts eBike meter

    3.3 Button Definition

    SW-LCD is equipped with a special 30-button unit. This operating button suits for both L/R hands, button instruction figures are as follows:

    SW-U eBike LCD Display_TopEParts eBike meter
    The 30-button unit is connected to the bottom of the SW-LCD display via a lead cable.

    The following introduction ‘[MODE]’ is named ‘MODE’. ‘[UP]’ is named as ‘UP’ and ‘[DOWN]’ is named as ‘DOWN’.

    4. Installation Instruction

    Fix the display and 30-button unit on the handlebar and adjust it to an appropriate visual angle. Match display connector with controller connector.

    5. Set up

    5.1 Preparation for Starting the Display

    Make sure the connector is linked properly to the motor controller on the bike.

    5.2 Start and Entry Setting State

    Press the MODE button for 1.5 seconds and start the display.

    After start-up, please hold both UP and DOWN for 2.5 seconds at the same time, LCD will enter into the setting state, and the settable parameter will flash. The parameter can be set circularly.

    5.3 Wheel Diameter

    The first setting parameter is the wheel diameter. The interface is as follows:

    SW-U eBike LCD Display_TopEParts eBike meter

    Press UP or DOWN to choose the right diameter (18-28inch) for the bike. The default setting is 26 inches. After confirmation of wheel size, press MODE to reserve it and enter it into the max speed set.

    5.4 Max Speed

    The second setting parameter is Max Speed. The interface is as below:

    Reset speed should be in accordance with the local regulation speed. If exceed your re-set figure, the bike will travel at the max speed of reset. Default max speed in factory is 25 Km/h.
    Speed option: 12-40Km/h, use UP or DOWN then confirm by MODE. Then enter into the interface of backlight brightness.

    5.5 Backlight Brightness

    The third setting parameter is backlight brightness. The interface is as below:

    SW-U eBike LCD Display_TopEParts eBike meter

    Press UP or DOWN to modify the backlight brightness. You can choose from level 1 to level 3. Level 1 is the minimum brightness. Level 3 is the maximum brightness. The default value of the backlight brightness is level 1. Press the MODE to confirm the backlight brightness, then enter into the interface of Choice of Display Unit.

    5.6 Choice of Display Unit (Metric system / British system)

    The fourth setting parameter is the Choice of Display Unit. The interface is as below:

    SW-U eBike LCD Display_TopEParts eBike meter

    Press UP or DOWN to choose a display unit.

    The unit could be MPH or Km/H. The ranging unit will change accordingly with the speed unit.

    5.7 Quit from set up

    In the setting state, press MODE for 3 seconds to confirm the input, save the current setting, and exit.

    6.  Standard Operation

    6.1 ON / OFF

    Press MODE, then the display starts to work and supply power to the controller, long press MODE then switches off power. In the status of OFF, the display and controller no longer consume battery power.

    6.2 Capacity Display

    When the battery capacity is high, the five battery segments are all light. When the battery is at low voltage, the last battery segment will flash at 1 Hz. It indicates that the battery is severely low in voltage condition and needs to be recharged immediately.

    SW-U eBike LCD Display_TopEParts eBike meter

    6.3 Speed Display (Current Speed/Average Speed/Max Speed)

    When the e-bike starts, the display will automatically show the current speed.

    SW-U eBike LCD Display_TopEParts eBike meter

    Hold UP and the display will show the MAX speed during this ride. Hold UP again and the display will show the AVG speed during this ride. Hold UP again and the display will turn to the current speed display.

    SW-U eBike LCD Display_TopEParts eBike meter

    6.4 Assisted Power Select or Throttle Level Select

    Press UP or DOWN to change the output power of the motor. The power ranges from Level 1 to Level 5. Level 1 is the minimum power. Level 5 is the maximum power.
    The default level is Level 1.

    SW-U eBike LCD Display_TopEParts eBike meter

    6.5 Distance Display (Riding Distance / Total Distance)

    Press MODE to switch between riding distance and total distance. This function is convenient for users to check the riding distance (TRIP) and the total distance (ODO).

    SW-U eBike LCD Display_TopEParts eBike meter

    6.6 Push Cruise Control

    Press DOWN for a while to get into power assist mode, and the bike will travel at a fixed speed 6Km/h.

    SW-U eBike LCD Display_TopEParts eBike meterWarning: Push cruise control mode is recommended under push state, not for riding mode.

    6.7 Turn On and Turn Off the Backlight

    Hold both UP and MODE for 3 seconds and turn on the SW-LCD backlight, when the surrounding light is not enough or it is in the evening. Hold both UP and MODE for 3 seconds again and you can turn off the SW-LCD backlight.

    When the backlight power ON, the headlight also power on (if the bike assembles with a headlight). And the function could be customized.

    SW-U eBike LCD Display_TopEParts eBike meter

    6.8 Power of the Display

    SW-U eBike LCD display will show the real-time power consumption of the riding electric bike. The interface below:

    SW-U eBike LCD Display_TopEParts eBike meter

    6.9 Error Code Display

    If there is something wrong with the electronic control system, the display will show the error code automatically. The following is the definition of the error code.

    Code number Definition
    21 Abnormal current
    22 Throttle fault
    23 Motor phase problem
    24 Motor hall defect
    25 Brake failed
    30 Abnormal communication


    Note: Here is a more general error code for different e-system for your reference.

    SW-U eBike LCD Display_TopEParts eBike meter

    Display return to normal only after the problem is fixed and the bike will not run before fixing the problem.

    7. Attention for Using

    Ride your bike in a safe way. Don’t hit or knock the display.

    Keep away from the bad environments when used, such as downpours, large snowflakes, and solarization.

    Try not to use it in under-voltage conditions. The screen will get dark along with the temperature reduction when the temperature is below -10℃. The screen will return to normal when the temperature rises again.

    8. FAQ Answers

    Q: Why can’t turn on the display?
    A: Please check if the cable is well connected with the controller.
    Q: How to deal with the error code display?
    A: Contact the e-bike maintenance station in time.

    9. Quality Warranty and Coverage

    We are not responsible for the scratched or broken shells after the products are delivered out of the factory.

    We don’t repair scratched or broken lead wires.

    The LCD display function warranty is 24 months from the delivery time of the display out of the factory.

    10. Circuit Block Diagram

    SW-U eBike LCD Display_TopEParts eBike meter

    • Red: 24V/36V;
    • Blue: lock wire;
    • Black: GND;
    • Green: RX wire;
    • Yellow: TX wire.

    Due to the use of the waterproof connector of part products, users cannot see the lead color of the internal wiring.

    11. Software Version

    This operating instruction is a general-purpose software (version V2.0). Some of the versions of the e-bike LCD may have slight differences, all with the actual use version.

    Ask For A Quick Quote

    We will email you within 1 day with the suffix “@topeparts.com”.

    Mobile: +1 (631) 780 4666