36V 18A Brushless Motor Controller 9A Rated Current Low Voltage Protection 31V E‑Bike Replacement Controller LSW1839‑8E

Product Overview
LSW1839‑8E brushless DC motor controller is a replacement drive unit for 48V electric bicycles. It comes with full pre‑wired harnesses to connect throttle, brake sensor, PAS pedal assist and e‑bike display. Built‑in multiple safety protections keep your ebike stable during commuting and riding.
Main Specifications
Model：LSW1839‑8E
Rated Voltage：48V
Rated Current：10A
Maximum Current：20A
Low‑Voltage Protection：40V
Throttle Working Voltage：1.2V‑4.4V
Application：48V E‑bike Brushless Motor
Wiring：Complete multi‑function pre‑assembled harness
Key Features
✅ Complete wiring harness：Ready‑to‑use multi‑color wire harness for throttle, brake cut‑off, PAS sensor and dashboard connection.
✅ Multiple safety protection：Low‑voltage protection prevents over‑discharging your 48V battery, extend battery service life.
✅ Stable power output：Max 20A output delivers smooth power for daily city riding.
✅ Direct replacement part：Perfect substitute for broken original LSW1839‑8E controller.
✅ Easy installation：Plug‑and‑play design for matching ebike system, no complicated modification required.
Important Notice
Please double‑check your original controller model, voltage and wiring definition before purchasing. Mismatched protocol or pin‑out may cause display communication failure or abnormal function. This controller only fits 48V brushless e‑bike motor.