1503 Brushless Motor 2750KV 3.7V–7.4V for FPV Drone & RC Quad

1503 High-Speed Brushless Motor – 2750KV | 3-Phase | 1.5mm Shaft

Take your DIY micro RC build to the next level with this 1503 3-phase brushless motor. Running at an impressive 2750KV and compatible with 3.7V (1S) and 7.4V (2S) lithium batteries, this compact powerhouse is engineered for high-speed micro crossing aircraft, circle racing machines, micro fixed-wing aircraft, FPV drones, and quadcopter builds. Made in Mainland China.

Key Features

• High KV Rating: 2750KV output for exceptional speed on lightweight micro airframes
• Dynamic Balance Corrected Outer Rotor: Neodymium magnetic steel and arc-shaped high-efficiency magnetic tiles for smooth, vibration-free operation
• Standard 1.5mm Shaft: Compatible with a wide range of micro propellers and mounts
• Thickened Step Design: The fixed outer rotor section features reinforced step construction for increased durability
• Voltage Compatibility: Operates on 1S–2S LiPo setups; recommended blade sizes for 2S include GF1635-4, GF1610-2, and GF1608-3
• Metal Construction: Robust metal build for long-lasting performance in demanding RC applications
• Recommended Age: 14 years and above

ESC Compatibility Notes

An ESC (Electronic Speed Controller) can typically handle around 10A continuously; a burst of 15–20A for up to 2 seconds is recommended. Please be aware that some brushless ESCs may have limited compatibility with ultra-high KV motors — symptoms can include difficulty ramping up/down at high speeds or minor jitter. Always begin with low-current tests and verify ESC parameters before full-throttle operation to avoid overheating.

Installation Tip

For best fit, it is recommended to install the motor in an inverted (upside-down) orientation. Front-mounting may result in a slightly looser fit depending on the airframe design.

What's in the Box

• 1 × 1503 Brushless Motor
• 1 × Electronic Speed Control (ESC) Board
• 1 × Fan Driver Board
• 1 × Servo Speed Control Board

Specifications

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Note: Product images are for illustrative purposes. Actual size is as described in the specifications above. Slight color variation may occur due to monitor settings. Manual measurement may result in minor dimensional differences.

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Frequently Asked Questions

Q: What battery configuration is recommended for the 1503 2750KV brushless motor?

A: This 1503 brushless motor is compatible with 1S (3.7V) and 2S (7.4V) LiPo batteries. For 2S operation, recommended propeller sizes include GF1635-4, GF1610-2, and GF1608-3. Always match your ESC rating to the battery and propeller combination for best performance.

Q: What ESC (Electronic Speed Controller) should I use with this motor?

A: A brushless ESC rated for approximately 10A continuous (with 15–20A burst capacity) is recommended. Note that some ESCs with limited high-KV compatibility may experience jitter or overheating. Always perform low-current startup tests and confirm ESC parameters are correctly set before full-speed operation.

Q: Is this brushless motor suitable for FPV racing drones and quadcopters?

A: Yes. The 1503 2750KV motor is specifically designed for high-speed micro crossing aircraft, FPV drones, circle racers, and DIY quadcopter builds. Its compact size, 1.5mm shaft, and dynamic-balance-corrected outer rotor make it an excellent choice for lightweight micro RC airframes.

Q: What is included in the package?

A: The package includes one 1503 brushless motor, one Electronic Speed Control (ESC) board, one Fan Driver Board, and one Servo Speed Control Board — everything you need to get started on your micro RC or FPV drone project.