Dual-Voltage Compatibility — 36V and 48V

This KT controller supports both 36V and 48V battery systems, making it suitable for a wide range of eBike conversion kits and replacement installations. Whether upgrading an older unit or repairing an existing system, the dual-voltage capability provides flexibility across different motor and battery combinations while maintaining smooth, predictable performance.

Optimised for 250W–350W Brushless Motors

Designed specifically for brushless hub motors rated between 250W and 350W, this controller delivers the current needed for efficient acceleration, stable cruising and responsive pedal assistance. Commonly used across:

• Commuter and city eBikes
• Hybrid and trekking bikes
• DIY electric bike conversion kits
• Replacement motor systems

Smooth Power Delivery and Efficient Motor Management

The KT 17A controller regulates communication between the battery, motor, display, throttle and pedal assist sensor. Key operational benefits include:

• Smooth, consistent acceleration
• Stable motor operation under varying load
• Efficient power management to extend battery range
• Reliable pedal assist response
• Compact and lightweight 6-MOSFET design

Replacement Controller — Common Fault Symptoms

If your existing controller has failed due to wear, electrical faults or water damage, replacing it can restore normal operation. Common symptoms of controller failure include:

• Motor not responding
• Intermittent or erratic power delivery
• Pedal assist not functioning correctly
• Throttle issues or no throttle response
• Unexpected system shutdowns
• Reduced or inconsistent motor performance

A compatible replacement controller can resolve these faults and restore smooth, reliable operation.

Related Components

Browse our full range of eBike Controllers and compatible Electric Bike Conversion Kits for additional components and upgrades.

Frequently Asked Questions