Frisco E-Bike
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E-Bike Controllers

36V/48V 15A Dual-Mode Controller for 250W–350W Hubs (generic)

Small folding and commuter e-bikes with 250W–350W hub motors use compact 15A controllers that tuck into a frame cavity or under the rack. The dual-mode versions can run with or without hall sensors, which makes them forgiving when a hall wire has failed. Many budget bikes use a controller like this paired with a simple LED or LCD, so the catch is always the display protocol and the connector set. Buy one when your bike's original is out of stock, and be prepared to swap the display and throttle to matching parts if the protocol is unknown.

Small-motor folding and commuter e-bikesReplacing a controller in a tight frame cavityBikes with a suspect hall sensor (dual-mode runs sensorless in a pinch)

Current price and availability are shown on Amazon.

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Key considerations

  • Display compatibility is the main gamble — expect to replace the display too
  • Check that the case dimensions fit where the old controller lived
  • 15A caps power around 500W at 36V; do not pair with bigger motors
  • Connector style (Julet vs bare wires) must be checked

Pros

  • Compact
  • Runs sensored or sensorless
  • Low cost

Considerations

  • Display matching is hit-or-miss
  • Limited power
  • Documentation is thin

Features & specifications

Voltage36V/48V
Rated current15A

Specifications are manufacturer-published figures or our own notes; confirm on the current listing before purchase.

Compatibility notes

  • Intended for 250W–350W hub motors on 36V or 48V systems; confirm display protocol separately

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Replacement parts

Confirm fitment on your bike before ordering — see each part’s compatibility notes.

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Similar alternatives

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E-Bike ControllersFeatured

KT 36V/48V 22A Sine Wave Controller

KT (Kunteng) controllers are the de facto standard in the conversion-kit world, and the 22A sine wave unit is the one most people end up with for a 500W–750W hub motor. Sine wave drive is quieter than square wave and smoother off the line. KT controllers talk a specific serial protocol to KT displays (LCD3, LCD8H and friends), so if you already have a KT display this is the natural match; if you have a different display, plan to replace both. Connectors are typically the Julet/Higo waterproof style, which makes wiring tidy but ties you to matching plugs.

Best for: Replacing a dead controller on a KT-based conversion kit · Upgrading a noisy square wave controller to sine wave · Pairing with a KT LCD display

View details & where to buy

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Mechanic working on bike components
Pedal Assist Sensors

12-Magnet Cadence PAS Sensor, Dual Hall (generic)

The 12-magnet cadence sensor is the standard pedal assist pickup on hub-motor kits: a magnet disc that slides onto the crank spindle and a small sensor bracket that mounts against the bottom bracket. Dual-hall versions sense pedaling direction, so assist stops when you back-pedal. Twelve magnets give faster response than the old 5- or 8-magnet discs. Most use a 3-wire lead with either a Julet waterproof plug or a small SM plug. Installation is the fiddly part: the crank usually has to come off, and on some bikes the disc needs to be the split type.

Best for: Replacing a broken or intermittent PAS disc on a kit bike · Upgrading a slow 5-magnet sensor to 12-magnet response · Builders who want assist to cut when back-pedaling

View details & where to buy

Sold on Amazon

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