Surpass Hobby BAT B3115 900KV Motor — a high-performance brushless motor designed specifically for FPV drones and other aggressive multirotor platforms. The innovative housing design ensures efficient cooling and device longevity: the removable design allows for easy cleaning of the motor from contaminants, and the porous front cover enhances heat dissipation during intensive flights.

High-quality Japanese NMB bearings are used in the motor for smooth and reliable operation. The windings are made of heat-resistant copper, capable of withstanding temperatures up to 220°C, and the use of silicon steel laminations reduces heat generation and increases overall efficiency. The motor demonstrates an impressive maximum thrust of 3218 g with a 9.0×4.5 inch propeller installed, making it an excellent choice for 10-inch frames and heavy configurations with increased load.

Specifications:

• Model: B3115 900KV
• Propellers: 9.0×4.5 inches
• Voltage: 2-6S (max. 25 V)
• Max Current: 46 A
• Max Power: 1330 W
• Resistance: 0.048 Ohm
• Weight: 112 g
• Stator Dimensions: 31×15 mm
• Thrust (max.): 3218 g
• Recommended Frames: 10 inches

Package Contents:

• B3115 900KV Motor – 1 pc.
• M3×8 Screws – 4 pcs.
• M5 Nut – 1 pc.

This model from the Surpass Hobby brand is ideal for pilots seeking a balance between power and efficiency: low winding resistance, high maximum permissible power, and reliable bearings ensure stable operation even during aggressive maneuvers. The motor is designed to operate in the 2-6S range (maximum 25 V) and withstands significant current loads up to 46 A, making it compatible with most modern ESCs and battery configurations for FPV racing and freestyle.

Thanks to the combined use of heat-resistant wires and high-quality core materials, the motor demonstrates increased resistance to overheating and wear, as well as higher efficiency in converting electrical energy into thrust. A weight of 112 g and stator dimensions of 31×15 mm make this model optimal for 10-inch frames where high thrust is required without excessive increase in platform mass.

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