Electric Bike Controllers 17A 26A 30A Three-Mode with Learning Function & S866 LCD Display, 24V 36V 48V Brushless Hub Motor Controller for 250W-1000W E-Bike
Note: The e-brake plugs on the 1T5 cable for the products on this page are 2-pin type.
Important Notes Before Purchasing an Ebike Controller
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Confirm Brake Connector Type
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Standard kits are equipped with a 1T5 cable with a 3-pin male brake plug.
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But some electric bikes require a 2-pin female brake plug; please check and choose the right one before purchasing

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Battery Connector
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Default connector: XT60. For other connector types, please leave a note when ordering

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Motor Connector Size
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Verify the motor plug diameter before ordering to ensure compatibility.
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For example, the 30A 1000W controller uses a big 9-pin plug (Ø19.2mm).

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Headlight Power Limit
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Controllers with a 3MO waterproof headlight module support a maximum light power of 7.5W.
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Exceeding this limit will cause the headlight function to fail.

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Voltage & Power Match
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Ensure the controller’s working voltage matches your battery voltage (24V / 36V / 48V / 52V).
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Select a controller that matches your motor’s power rating:
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17A: 250–350W
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26A: 500–750W
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30A: 1000W
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40A/45A: 2000W
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Hall & Non-Hall Motor Compatibility
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All controllers are compatible with both Hall sensor and sensorless motors, but wiring must be correct.
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Learning Function
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Use the learning wire to set the motor’s forward/reverse direction before final installation.
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Waterproof Design Precautions
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These controllers are designed to be water-resistant, not fully waterproof.
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Avoid prolonged submersion or high-pressure washing.
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Display Compatibility
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To avoid compatibility issues, purchase the controller and display together.
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For NFC models (e.g., S966-NFC), ensure your phone supports NFC if you wish to use the keyless start/lock feature.
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Cable Length & Routing
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Standard 1T5 cable length: 1500mm (Julet brand).
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Display cable length: approx. 20cm (waterproof plug).
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Arrange wiring carefully to avoid pulling or crushing cables.
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Display Specifications
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Model: S866 / CS866 LCD Display
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Voltage: 24V / 36V / 48V
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Plug: 5 Pin Male SM Plug
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Holder Diameter: 22mm
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Cable Length: 160cm (SM Plug)
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Functions: Battery display, speed indicator, mileage statistics
Controller Specifications
17A Controller
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Size (L×W×H): 97×52×31mm
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Rated Power: 250W / 350W
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Mosfets: 9 Mosfets
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Voltage: DC 24V / 36V / 48V
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Speed Set: 1.1–4.2V
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Brakes: Low-Level
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Features: Forward/reverse learning function, compatible with motors with or without Hall sensors.

26A Controller
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Size (L×W×H): 150×65×40mm
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Rated Power: 500W / 750W
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Mosfets: 9 Mosfets
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Voltage: DC 24V / 36V / 48V
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Speed Set: 1.1–4.2V
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Brakes: Low-Level
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Features: Forward/reverse learning function, compatible with motors with or without Hall sensors.
30A Controller
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Size (L×W×H): 175×65×40mm
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Rated Power: 1000W
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Mosfets: 12 Mosfets
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Voltage: DC 24V / 36V / 48V
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Speed Set: 1.1–4.2V
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Brakes: Low-Level
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Features: Forward/reverse learning function, compatible with motors with or without Hall sensors.


















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