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24V/36V Round & Cylindrical E-Bike Controllers24V/36V Round & Cylindrical E-Bike Controllers 224V/36V Round & Cylindrical E-Bike Controllers 324V/36V Round & Cylindrical E-Bike Controllers 424V/36V Round & Cylindrical E-Bike Controllers 524V/36V Round & Cylindrical E-Bike Controllers 624V/36V Round & Cylindrical E-Bike Controllers 724V/36V Round & Cylindrical E-Bike Controllers 8

24V/36V Round & Cylindrical E-Bike Controllers

24V/36V 250W round and cylindrical potted e-bike controllers, IPX6 waterproof, EN15194 tested — 8 form factors for compact or in-tube mounting, wholesale supply.

At a glance

Brand
MotorEnable
Voltage
24V / 36V
Rated power
250W
Application
24V/36V hub-motor e-bikes, 250W, compact/in-tube mounting
  • FOC sine-wave drive for quiet, high-efficiency operation and longer range
  • Multiple protections — over-current, over/under-voltage, over-temperature, runaway, short-circuit, phase-loss and stall
  • Auto-sleep after 10 minutes idle to conserve battery charge
  • USB or display-configurable current limit, undervoltage cutoff, sensor type, top speed and assist ratio
  • Compatible with Hall and Hall-less motors, LED and LCD displays
  • 100% tested to EN15194
Get a Quote

Round and cylindrical potted controllers for 24V/36V 250W hub-motor e-bikes — the shape fits seat-tube, down-tube and other compact cavities where a rectangular box won’t mount. Same electronics and protection set as our box-style line, just a different housing.

These are wholesale, quote-only parts. Tell us your motor’s rated power, voltage, Hall/Hall-less sensor type and available mounting space and we’ll confirm the matching controller model and pricing.

Models & specifications

ModelDimensions (mm)VoltageRated power
LD-LS04-F⌀28×18524V / 36V250W
LD-LS11-F⌀95×2024V / 36V250W
LD-LS13-F⌀100×2024V / 36V250W
LD-LS14-F⌀100×13024V / 36V250W
LD-LS15-F⌀74×9224V / 36V250W
LD-LS23-F⌀80×9024V / 36V250W
LD-BL01-C⌀90×13024V / 36V250W
LD-BL03-F⌀82×4424V / 36V250W

All models: undervoltage cutoff DC21.5V(±0.5V)/DC31.5V(±0.5V), current limit 12A(±0.5A)/15A(±0.5A), IPX6 waterproof rating, standby draw <2W.

Highlights

  • Ultra-quiet: torque ripple minimized for noise- and vibration-free riding.
  • Higher efficiency: FOC (field-oriented control) reduces controller heat and extends battery range.
  • Multi-layer protection: over-current, over/under-voltage, over-temperature, runaway, short-circuit, phase-loss and stall protection.
  • Auto-sleep: cuts power automatically after 10 minutes idle to save battery charge.
  • Flexible configuration: current limit, undervoltage cutoff, sensor type, top speed and assist ratio adjustable via USB or display.
  • EN15194 tested: 100% pass rate on all specifications and functions.