SW781-117M Brushless Motor Controller, 36V 7A Rated 14A Max Electric Bicycle Controller for E-bike

SW781-117M brushless motor controller is a replacement control unit for 36V electric bicycles. It drives the brushless hub motor, manages power output, throttle signal and low-voltage battery protection, ideal for old e-bike repair and controller swap.

Key Specifications

• Model: SW781-117M
• Type: Controller for brushless motor
• Rated Voltage: 36V
• Rated Current: 7A
• Maximum Current: 14A
• Low voltage protection: 31.5V
• Throttle adjustment voltage: 1.2V ~ 4.4V

Features

✅ Aluminium alloy housing for good heat dissipation ✅ Built-in low voltage protection, prevents over-discharge of lithium battery ✅ Compatible with throttle signal 1.2V–4.4V, match standard ebike throttle ✅ Stable current output, protects motor from overload damage ✅ Pre-wired multi-color cables for easy wiring ✅ Compact size, simple installation on e-bike frame ✅ Direct replacement part for SW781-117M original controller

Application

For 36V electric bicycle / e-bike with brushless hub motor.

Package Includes

1 × SW781-117M Brushless Motor Controller (with pre-wired cables)

Notes:

• Please match your old controller model, voltage and wiring definition before purchase.
• Professional wiring is recommended. Wrong wiring may damage controller or battery.