HITWAY BK9S Electric Bike - 250W Motor, High-Performance Commuter & Adventure E-Bike. ✔ 1x HITWAY BK9S Electric Bike. Why Choose the HITWAY BK9S?. 🔹 Model: BK9S. 🔹 Battery: 48V 15Ah (Removable). ✅ Three Riding Modes - Choose from pure electric, pedal-assist, or manual mode for adaptable riding.