Overview
The Surpass Hobby BAT S4218 is an FPV brushless motor designed for high-efficiency multirotor power systems. It is available in 330KV or 560KV options, with 1PCS or 4PCS purchase selections to match single-motor replacements or full drone builds.
Key Features
- Detachable design for easier cleaning and improved heat dissipation via a porous air outlet front cover structure
- NMB bearings (Japan) for smooth, wear-resistant operation
- 220°C high-temperature resistant multi-strand copper wire
- 0.2 mm silicon steel sheet (Japan) for low heat generation and high efficiency
- M6 shaft designed to fit most propellers; custom nuts help protect steel shaft threads
- 48SH rotor NdFeB magnet tiles; lightweight high-strength hole-core steel shaft
Specifications
| Series / Model | BAT S4218 |
| KV options | 330KV / 560KV |
| Slots / Poles | 12N14P |
| Motor size | φ50.4 × 64.5 mm |
| Stator size | φ42 × 18 mm |
| Shaft | φ6 mm (M6) |
| Wire | 14# × 670 mm |
| Mounting | 4 × M4 on φ30 mm pattern |
Electrical (by KV)
| KV | Max Watts (W) | Max Current (A) | No-load Current (A) | Resistance (mΩ) | Weight incl. wire (g) |
|---|---|---|---|---|---|
| 330KV | 2292.6 | 54.73 | 0.80 | 62.7 | 295.0 |
| 560KV | 3219.5 | 97.06 | 1.45 | 32.8 | 294.0 |
Thrust Test (Prop: GF1310-3)
| KV | Max Thrust (g) | Volts (V) | Amps (A) | Watts (W) | Efficiency (g/W) | Operating temperature (°C) |
|---|---|---|---|---|---|---|
| 330KV | 6499 | 41.89 | 54.73 | 2292.6 | 3.6 | 32.1 |
| 560KV | 8183 | 33.17 | 97.06 | 3219.5 | 3.6 | 37.2 |
What's Included
- Surpass Hobby BAT S4218 FPV brushless motor (quantity per selected option: 1PCS or 4PCS)
Applications
- FPV multirotor / multicopter power systems
- High-thrust drone builds using M6 propeller mounting
For product selection help (330KV vs 560KV) or build support, contact [email protected] or visit https://rcdrone.top/.
Details

Built for efficient multirotor power setups, the BAT S4218 combines a compact 50.4×64.5 mm body with a robust M6 shaft for prop mounting.

Quality internals—NMB bearings, high-temp copper wire, and silicon steel—support smooth running and reliable efficiency under load.

A detachable structure and porous front cover help simplify maintenance while improving airflow for heat dissipation.



Detailed sizing, electrical data, and thrust-test charts make it easier to match the 330KV or 560KV option to your build.
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