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Luna Cycle's "preprogrammed" LCD and upgraded 20 amp controller combo


Luna Cycle's "preprogrammed" LCD and upgraded 20 amp controller combo

Does anyone know if the Luna Cycle LCD and 20 amp controller combo is really a different LCD than an original (kickstarter) LCD?  Can I just buy the controller and reprogram my existing display or do I really need to buy their display too?


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I'm cleaning this up here.

There are two versions of the LCD:

  1. Aftermarket unbranded LCD - called: KT-LCD3 / Wendy LCD / Aftermarket LCD Display
  2. Branded LCD (looking the same like the aftermarket unbranded LCD but WITH Sondors logo on it see picture here: show picture)

Please note, sondors sold to every version of the bike a lcd. they are not marked but different!

Long story short: 

  • The first eBike from Sondors (distributed via the first Indiegogo campaign) is compatible with the KT-LCD3 Aftermarket LCD and the at that time distributed LCD from Sondors
  • All other eBikes from Sondors (distributed via Kickstarter / / ARE NOT compatible with the aftermarket unbranded LCD. Only with in that time distributed LCD Display (branded with Sondors Logo) from SOONDORS.


Please note: YOU CANNOT tell the difference between the branded Sondors LCD distributed with Sondors eBikes sold over Kickstarter and Sondors eBikes sold over - They look exactly the same but are not going to work on each other bike. (Kickstarter 'branded' Sondors LCD will not work with an bike from due to different communication protocols)

This is due to a change in the communication protocol. Sondors did that to stop aftermarket sales (which were cheaper than the Sondors LCD itself (around 50$ I think).


So if you have an Sondors eBike sold after the first campaign. You will need to buy Controller and the aftermarket unbranded LCD (both 100$ - will ship faster to your housedoor...) or you buy the corresponding Sondors branded LCD. (100$)


If you have any questions, please ask ask ask. There are no dumb questions. We are here to help. 


Thanks and have a great day,


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  • Similar Content

    • By RoyalTS
      Here you can find the right settings for your Sondors eBike generic LCD!
      KT LCD3 settings for Sondors
      buy a LCD here: klick
      Max. Speed: leave it, or set it to 25 km/h
      Wheel Diameter: 29 for 4.9" tires, 28 for 4.0"
      Metric and Imperial Units: your choice
      P1 = 100 (Motor Characteristic Parameter Setting Mode, 1 - 255)
      P2 = 6 (Wheel Speed Pulse Signal Setting Mode, 0 - 6)
      P3 = 1 (Power Assist Control Mode, 0 or 1)
      P4 = 0 (Handlebar Startup Mode, 0 or 1)
      P5 = 12 (Power Monitoring Mode, 0 - 40)
      C1 = 01 (Power Assist Sensor and Parameter Select Mode, 00 - 07)
      C2 = 0 (Motor Phase Classification Coding Mode, 0 - 7, 0:sin wave)
      C3 = 8 (Power Assist Ratio Gear Initialization Mode, 0 - 8 ) (C3=6 WARNING! Bike starts running forward on it’s own at power up!)
      C4 = 0 (Handlebar Function Setting Mode, 0 - 4)
      C5 = 10 (Controller Maximum Current Adjustment Mode, 00 - 10)
      C6 = 3 (Backlight Brightness Adjustment Mode, 1 - 5)
      C7 = 1 (Cruise Function Setting Mode, 0 or 1)
      C8 = 1 (Motor Operating Temperature Display Mode, 0 or 1)
      C9 = 0 (Startup Password Setting Mode, 0 or 1)
      C10 = n (Automatically Restore Default Setting Mode, n or y)
      C11 = 0 (Attribute Selection Mode, 0 - 2)
      C12 = 4 (Controller Minimum Voltage Adjustment Mode, 0 - 7)
      C13 = 0 (Brake energy recovery - recuperation - only works with the corresponding controller, 0 - 5)
      C14 = 2 (Coordination of support levels, 1 - 3, 2 = standard)
      (description of the C parameters follows)
      Step by step / Details
      What you should now to set up your KT LCD3 display:
      General Settings:
      Under power off status, hold the „power“ button long, the meter is turned on. Within 5 seconds after boot-up, hold „up“ and „down“ simultaneously for about 2 seconds. Now you are in the settings menu.
      (between each setting parameter press „power“ to save and to get to the next parameter)
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      P2 is wheel speed pulse signal setting mode. If wheel generated 1 pulse signal by a revolution, P2 should be set as1. If wheel generated 6 pulse signals by a revolution, P2 should be set as 6. If users didn’t configure the pulse signal system, and then P2 parameter setting can be 0. The setting range of P2 should be between 0-6.
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      P5 Power Monitoring Mode
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      12 = 36 V
      15 = 48 V
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      C1 Quantum power assist sensors or similar products
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      02 10 magnet sensor
      03 12 magnet sensor
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      C3 Power Assist Ratio Gear Initialization Mode
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      C5 Controller Maximum Current Adjustment Mode
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      C7 Cruise Function Setting Mode
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      C10 Automatically Restore Default Setting Mode
      C11 Attribute Selection Mode
      C12 Controller Minimum Voltage Adjustment Mode
      C13 Brake energy recovery - recuperation - only works with the corresponding controller
      C14 Coordination of support levels
      (C Parameters are following some time)
      Want a complete manual? (GENERAL Manual - not special for Sondors) Here you go: KT-LCD3 General Manual.pdf (to view/download you have to be logged in)
    • By Marty Allen
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    • By th3m3chanic
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    • By 3D-vice
      Since the LCD user manual's chapter about the parameter copy fuctionality is a bit ambiguous, here's a step by step guide about how to set up the LCDs and the wiring.
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      Disclaimer 2: I used third-party displays I had purchased from AliExpress. I DO NOT know if this works with Sondors branded LCDs or with a mixture of both, because of the various communication protocols. The user manual says that parameter copy is working with displays using the LCD3 communication protocol. As far as I know, the Sondors branded LCDs and third-party LCDs both used the LCD3 protocol.
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      It is also recommended to put an on-off-switch to the red and black lines connecting the power source, such as the bike battery or any other 36V power supply.
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      This setup should be done while the source display is still connected to your bike. In order to set up your LCD as source dislpay, you need to enter the programming mode and go to the C-parameter settings. Have a look at this post how to do this.
      Go to the "C11 Attribute Selection Mode" and set the C11 value to 2 (C11=2). Then finish the programming procedure. This enables your display to be the data source for copying parameters. If setting the C11 value to 2 is successful, the display should show the following after finishing the programming mode:

      Switch off the display and disconnect it from your bike.
      Step 3: Connect the two displays
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      3.2 Connect both LCDs using the adapter cable as shown in the image of Step 1.
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      Step 4: Perform the parameter copy operation
      4.1 Switch on the source display by pushing its on-off-button.
      4.2 Switch on the target display by holding down the on-off-botton until it activates. Within 5 seconds after activation, simultaneously press the up- and down-arrows of the target display for at least 2 seconds. Then the copying process is finished.
      The actual parameter copying process as very fast and is done in an instant. If successful, the display should now show the following:

      Step 5: Finishing touches
      After successful copy, switch off both displays and the power source and disconnet all components. Do not forget to revert the C11 value of the source display back to where it was (probably C11=0).
      Hint 1: If the source display was password protected (C9 parameter), keep in mind that the password has not been copied to the target display.
      Hint 2: The C11=2 source setting of the source display has also not been copied. It makes no sense to copy this parameter to the target display.
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