Motor Bafang M400 UART

Bafang M400 UART Mid-Drive Electric Motor (80 Nm, 250 W) — a reliable, powerful, and proven drive system

The Bafang M400 mid-drive motor sets the gold standard in the mid-drive category for trekking, mountain, and city e-bikes. With a maximum torque of 80 Nm and a rated power of 250 W, it provides smooth yet powerful assistance exactly when you need it.

The version using the UART communication protocol ensures a wide range of display options, easy diagnostics, and broad compatibility with replacement parts.

Key Features

• High torque of 80 Nm
• Integrated torque sensor
• UART communication protocol
• Quiet and efficient operation
• Durable construction (IP65)

The Bafang M400 UART electric motor is designed to seamlessly adapt to your riding style. Unlike basic motors that rely solely on a pedal rotation sensor, the M400 uses precise torque (pressure) detection. The harder you push down on the pedals, the more assistance the motor provides. The result is an immediate response without any unpleasant jerking, and it feels as if you have twice the strength in your legs.

The UART (Universal Asynchronous Receiver-Transmitter) system uses standardized component connections. This will be appreciated by e-bike manufacturers and builders, service centers, and users alike—the UART interface offers broad compatibility with existing Bafang displays (e.g., DP C10, DP C18, C965, and others with a UART connector) and easier access to replacement parts.

The mid-drive motor placement keeps the e-bike’s center of gravity low and centered. This significantly improves handling in turns, stabilizes the bike on uneven surfaces, and provides optimal weight distribution.

Technical Specifications:

Communication protocol: UART
Rated power: 250 W
Maximum torque: 80 Nm
Rated voltage: 36 V
Sensor type: Torsion (pressure) + pedaling cadence sensor
Protection rating: IP65
Certifications: CE / EN 15194
Weight: 3.9 kg

BAFANG - the leader in electric bicycle drive systems. BAFANG Electric (Suzhou) Co., Ltd. is one of the world's largest manufacturers of powertrains and components for electric bicycles and light electric vehicles (LEVs). BAFANG invests heavily in research and development, with a focus on improving the driving experience, drive efficiency, durability and smart features. Their technologies also support smart connectivity via Bluetooth and mobile apps.

Contact: BAFANG Electric Europe B.V., Hospitaaldreef 5, 1315 RC Almere, Netherlands, e-mail: +31 (0)36 72 00 980, phone: +31 (0)36 72 00 980 website: www.bafang-e.com