Product overview
The T-MOTOR U3 KV700 is a UAV propulsion motor intended for aerial photography, filming, delivery services and agricultural applications. Supplied with a hardware pack, it uses a 12N14P configuration, precision-wound oxygen-free copper coils and 0.2mm silicon steel sheet. Six upward-beveled holes support ventilation, and a special screw secures the stator and rotor assembly. Its construction is described as water-, dust- and sand-resistant. The copper coil has a stated temperature tolerance of 180°C.
The U3 KV700 measures 41.8mm in diameter by 30.75mm, with a 4mm shaft. It weighs 97g without cables and 128g with its 600mm, 18 AWG cables. It supports 3–4S LiPo batteries, with a recommended setup using a 4S ESC and 12- or 13-inch propellers. Internal resistance is 50 milliohms, and idle current is 0.5A at 10V. The published maximum continuous-power specification is 80W.
The stated maximum thrust of 1.8kg corresponds to a reported test point at 14.8V with a T-MOTOR 13*4.4CF propeller and 100% throttle: 1800g thrust, 19.4A current, 287.12W power and 7850RPM. Motor-surface temperature is recorded as 47°C after 10 minutes at full throttle. The 287.12W test point exceeds the published 80W maximum continuous-power specification; the discrepancy remains unresolved. At 11.1V with a T-MOTOR 12*4CF propeller, reported full-throttle thrust is 1000g at 123.21W. The stated mean time between failures is approximately 1600 hours, without establishing a guaranteed service interval.
Specifications
| Specification | Value & conditions |
|---|---|
| Manufacturer, model and motor variant | T-MOTOR U3 UAV motor, KV700 |
| Product purpose | UAV propulsion for aerial photography, filming, delivery service and agriculture applicationsApplication areas; aircraft suitability requires configuration-specific assessment. |
| Supplied configuration | 1 × T-MOTOR U3 motor; 1 × hardware packMotor and hardware pack supply; the listed package is a component package rather than a flight platform or airframe kit. |
| Integration recommendation | Recommended 4S ESC and 12- or 13-inch propellersManufacturer recommendation; confirm the selected ESC and propeller configuration. |
| Ventilation and rotor retention | Six upward-beveled holes; special screw for stator and rotor installation; claimed water and sand resistance |
| Winding and steel construction | Oxygen-free copper coil with stated 180C tolerance; precision winding; 0.2mm silicon steel sheet180C refers to the stated copper-coil temperature tolerance, not a published permissible operating temperature for the complete motor. |
| Maximum thrust | 1.8kgManufacturer headline maximum. The published 1800G test point uses 14.8V, a T-MOTOR 13*4.4CF propeller and 100% throttle; this is configuration-dependent. |
| MTBF | About 1600hoursApproximate manufacturer MTBF claim. The separate bearing service-life statement specifies trouble-free operation; neither establishes a guaranteed service interval. |
| Internal resistance | 50mΩ |
| Configuration | 12N14P |
| Shaft diameter | 4mm |
| Motor dimensions | Φ41.8×30.75mm |
| Wire gauge | 18# AWG |
| Cable length | 600mm |
| Weight including cables | 128gPublished motor weight includes cables. |
| Weight excluding cables | 97gPublished motor weight excludes cables. |
| LiPo cell count | 3–4SPublished LiPo cell-count range; the separate integration recommendation specifies a 4S ESC. |
| Idle current | 0.5A at 10VIdle current measured at the published 10V condition. |
| Maximum power | 500W (180S)Published maximum power carries a 180-second qualification. |
| Maximum continuous current | 25A (180S)The manufacturer's maximum continuous-current label carries a 180-second qualification; do not treat it as an indefinite rating. |
| 12*4CF test, 65% throttle | Current 4.8A; power 53.28W; thrust 550G; speed 4900RPM; efficiency 10.32G/WManufacturer test data for U3 KV700 at 11.1V with T-MOTOR 12*4CF propeller and 65% throttle. |
| 12*4CF test, 75% throttle | Current 6.6A; power 73.26W; thrust 700G; speed 5500RPM; efficiency 9.56G/WManufacturer test data for U3 KV700 at 11.1V with T-MOTOR 12*4CF propeller and 75% throttle. |
| 12*4CF test, 85% throttle | Current 9.1A; power 101.01W; thrust 870G; speed 6300RPM; efficiency 8.61G/WManufacturer test data for U3 KV700 at 11.1V with T-MOTOR 12*4CF propeller and 85% throttle. |
| 12*4CF test, 100% throttle | Current 11.1A; power 123.21W; thrust 1000G; speed 6600RPM; efficiency 8.12G/WManufacturer test data for U3 KV700 at 11.1V with T-MOTOR 12*4CF propeller and 100% throttle. |
| 13*4.4CF test, 65% throttle | Current 5.6A; power 62.16W; thrust 650G; speed 4900RPM; efficiency 10.46G/WManufacturer test data for U3 KV700 at 11.1V with T-MOTOR 13*4.4CF propeller and 65% throttle. |
| 13*4.4CF test, 75% throttle | Current 7.9A; power 87.69W; thrust 830G; speed 5300RPM; efficiency 9.47G/WManufacturer test data for U3 KV700 at 11.1V with T-MOTOR 13*4.4CF propeller and 75% throttle. |
| 13*4.4CF test, 85% throttle | Current 10.5A; power 116.55W; thrust 1000G; speed 6000RPM; efficiency 8.58G/WManufacturer test data for U3 KV700 at 11.1V with T-MOTOR 13*4.4CF propeller and 85% throttle. |
| 13*4.4CF test, 100% throttle | Current 12.6A; power 139.86W; thrust 1100G; speed 6400RPM; efficiency 7.87G/WManufacturer test data for U3 KV700 at 11.1V with T-MOTOR 13*4.4CF propeller and 100% throttle. |
| 14*4.8CF test, 65% throttle | Current 7.7A; power 85.47W; thrust 890G; speed 4500RPM; efficiency 10.41G/WManufacturer test data for U3 KV700 at 11.1V with T-MOTOR 14*4.8CF propeller and 65% throttle. |
| 14*4.8CF test, 75% throttle | Current 10.7A; power 118.77W; thrust 1060G; speed 4900RPM; efficiency 8.92G/WManufacturer test data for U3 KV700 at 11.1V with T-MOTOR 14*4.8CF propeller and 75% throttle. This complete source row consolidates the final partial specification candidate. |
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