3.7V 1503 BLDC Mini Brushless DC Drone Motor

3.7V 1503 BLDC Mini Brushless DC Drone Motor is a high-performance, ultra-lightweight propulsion unit engineered specifically for micro quadcopters and small unmanned aerial vehicles (UAVs). Operating efficiently on a single-cell LiPo battery (3.7V), this compact brushless motor provides impressive thrust-to-weight ratios to maximize flight agility. Consequently, drone builders can achieve extended flight times and responsive control during acrobatic maneuvers. Furthermore, its robust stator construction and high-grade N52 neodymium magnets ensure smooth operation under heavy throttle. Therefore, you can rely on this motor to power mini FPV drones, indoor micro flyers, and custom DIY airborne platforms with precision.

Key Features:

• High Power-to-Weight Ratio: Delivers exceptional thrust despite its minimal footprint, boosting overall flight efficiency and payload agility.
• Optimized for 1S Power: Designed to run on 3.7 V (1S LiPo) power sources, eliminating the need for bulky multi-cell battery packs.
• Durable Construction: Features CNC-machined aluminum end bells and high-temperature copper windings for maximum durability and heat dissipation.
• Smooth Brushless Operation: Eliminates mechanical brush wear, resulting in reduced maintenance, quiet operation, and a significantly longer motor lifespan.
• Pre-tinned Silicon Wires: Comes with flexible, heat-resistant silicone leads that simplify direct soldering to Electronic Speed Controllers (ESCs).

Technical Specifications:

• Nominal Operating Voltage: 3.7 V (1S LiPo / Li-ion)
• KV Rating: ≈ 8000 KV to 12000 KV (Variant dependent)
• Motor Type: Outrunner Brushless DC Motor (BLDC)
• No-Load Current: ≈ 0.5 A at 3.7 V
• Max Continuous Current: ≈ 6 A to 8 A (10 seconds)
• Internal Resistance: ≈ 0.15 Ω
• Recommended Propeller Size: 2 inch to 3 inch micro propellers

Mechanical Specifications:

• Stator Diameter: 15 mm
• Stator Thickness: 3 mm
• Magnet Type: High-temperature N52 Neodymium Magnets
• Bearing Type: Precision dual ball bearings
• Shaft Material: Hardened Stainless Steel

Dimensions:

• Overall Motor Diameter: ≈ 18.5 mm
• Overall Body Height: ≈ 12.0 mm
• Shaft Diameter: 1.5 mm
• Shaft Extension Length: ≈ 4.0 mm to 5.0 mm
• Mounting Hole Pattern: M2 pattern (≈ 9 mm / 12 mm PCD)
• Weight: ≈ 8.5 g (including lead wires)

Pinout and Wiring:

• Phase Wire 1: Connect to any one of the three output pads on a 1S Brushless ESC.
• Phase Wire 2: Connect to the second output pad on the 1S Brushless ESC.
• Phase Wire 3: Connect to the third output pad on the 1S Brushless ESC.
• Rotation Direction Note: However, if the motor rotates in the wrong direction, swap any two phase wire connections or reconfigure the ESC firmware direction settings.

Datasheet Reference:

• Download 1503 Brushless Motor Specification Sheet

Commonly Used in:

• Micro FPV Drones: Providing reliable propulsion for 1S toothpicks, whoops, and sub-100g micro drone frames.
• Indoor RC Aircraft: Powering small RC park flyers and indoor ultra-light fixed-wing models.
• Miniature Robotics: Serving as high-RPM power sources in specialized robotics and miniature drive mechanisms.

Applications:

• Acrobatic Flight Control: Generating fast throttle response for sharp turns and freestyle FPV maneuvers.
• Custom DIY UAV Builds: Allowing hobbyists to assemble ultra-lightweight custom quadcopters with high thrust output.
• High-Speed Airflow Systems: Driving mini impellers or compact fans for specialized cooling requirements.

Equivalent Models:

• 1404 BLDC Motor: A slightly larger motor providing similar KV ratings with higher overall torque capabilities.
• 1202.5 / 1203 BLDC Motor: A smaller outrunner alternative, however, it provides lower overall thrust compared to the 1503 stator size.
• EX1503 Series (Happymodel): A direct functional equivalent featuring similar mounting patterns and 1S/2S compatibility.

Package Includes:

• 1 x 3.7V 1503 BLDC Mini Brushless DC Drone Motor