Fardriver ND84850
High-power FOC sine wave controller for 60-84V hall motors. 850A phase current, 450A DC rated, suitable for 6-8.5kW motors. IP67 waterproof aluminum housing with 36 FET MOSFETs (S36 exterior). Programmable via PC or Bluetooth (Andro4A).
In brief: 60–84V controller. 450A continuous. FOC, dual mode, regen, field weakening, self-learning support. From $515 across 3 sellers.
Specs verified May 29, 2026
Where to Find
Prices tracked across 6 sellersQS Motor
$515.29
Contact to buy
AliExpress
$541.24
AliExpress - SIA Tech Store
$723.34 + $89.21 shipping
FarDriver
Request a quoteContact to buy
AliExpress - Zhejiang Siaecosys Technology Co., Ltd. Store
Out of stockAliExpress - SIAECOSYS Official Store
Out of stock* Shipping estimates are for the contiguous US and may vary by location.
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Price History
Price History
Price changes tracked by the crawler
Current best price $464.66. Over the past 90 days: low $429.89, high $723.34, average $555.97 — down 16% vs average.
- AliExpress - SIA Tech Store
- AliExpress - SIAECOSYS Official Store
- AliExpress - Zhejiang Siaecosys Technology Co., Ltd. Store
- AliExpress
- QS Motor
All Records
82 price records in this period
| Date | Price | Shipping | Total | Change | Coupon | Rating | Sales | In Stock | Status |
|---|---|---|---|---|---|---|---|---|---|
AliExpress(15 records) | |||||||||
| May 29, 202610:33 AM | $541.24 | — | $541.24 | $0.73 | — | — | — | Yes | active |
| May 28, 202609:01 AM | $540.51 | — | $540.51 | $0.36 | — | — | — | Yes | active |
| May 27, 202610:20 AM | $540.15 | — | $540.15 | $0.00 | — | — | — | Yes | active |
| May 25, 202601:55 PM | $540.15 | — | $540.15 | $1.46 | — | — | — | Yes | active |
| May 23, 202610:17 AM | $538.69 | — | $538.69 | $0.00 | — | — | — | Yes | active |
| May 22, 202609:01 AM | $538.69 | — | $538.69 | $0.37 | USSS05−$5.00 | — | — | Yes | active |
| May 21, 202609:07 AM | $539.06 | — | $539.06 | $0.00 | USSS35−$35.00 | — | — | Yes | active |
| May 19, 202609:09 AM | $539.06 | — | $539.06 | $1.46 | USSS35−$35.00 | — | — | Yes | active |
| May 18, 202609:08 AM | $537.60 | — | $537.60 | $1.46 | USSS12−$12.00 | — | — | Yes | active |
| May 17, 202609:01 AM | $539.06 | — | $539.06 | $0.00 | — | — | — | Yes | active |
| May 16, 202609:07 AM | $539.06 | — | $539.06 | $0.00 | — | — | — | Yes | active |
| May 15, 202609:01 AM | $539.06 | — | $539.06 | $0.72 | SRUS02−$2.00 | — | — | Yes | active |
| May 14, 202609:07 AM | $539.78 | — | $539.78 | $0.36 | SRUS04−$4.00 | — | — | Yes | active |
| May 12, 202609:07 AM | $539.42 | — | $539.42 | $3.64 | SRUS50−$50.00 | — | — | Yes | active |
| Apr 24, 202610:55 PM | $535.78 | — | $535.78 | Initial | — | — | — | Yes | active |
AliExpress - SIA Tech Store(48 records) | |||||||||
| May 29, 202601:57 PM | $723.34 | $89.21 | $812.55 | $0.00 | — | — | — | Yes | active |
| May 29, 202601:57 PM | $723.34 | $89.21 | $812.55 | $0.00 | — | — | — | Yes | active |
| May 29, 202601:56 PM | $723.34 | $89.21 | $812.55 | $0.00 | — | — | — | Yes | active |
| May 29, 202601:56 PM | $723.34 | $89.21 | $812.55 | $0.65 | — | — | — | Yes | active |
| May 28, 202612:26 PM | $722.69 | $89.09 | $811.78 | $0.00 | — | — | — | Yes | active |
| May 28, 202612:25 PM | $722.69 | $89.09 | $811.78 | $0.00 | — | — | — | Yes | active |
| May 28, 202612:25 PM | $722.69 | $89.09 | $811.78 | $0.00 | — | — | — | Yes | active |
| May 28, 202612:24 PM | $722.69 | $89.09 | $811.78 | $0.79 | — | — | — | Yes | active |
| May 27, 202601:44 PM | $721.90 | $89.03 | $810.93 | $0.00 | — | — | — | Yes | active |
| May 27, 202601:44 PM | $721.90 | $89.03 | $810.93 | $0.00 | — | — | — | Yes | active |
| May 27, 202601:43 PM | $721.90 | $89.03 | $810.93 | $0.00 | — | — | — | Yes | active |
| May 27, 202601:43 PM | $721.90 | $89.03 | $810.93 | $0.00 | — | — | — | Yes | active |
| May 25, 202605:41 PM | $721.90 | $89.03 | $810.93 | $0.00 | — | — | — | Yes | active |
| May 25, 202605:40 PM | $721.90 | $89.03 | $810.93 | $0.00 | — | — | — | Yes | active |
| May 25, 202605:40 PM | $721.90 | $89.03 | $810.93 | $0.00 | — | — | — | Yes | active |
| May 25, 202605:39 PM | $721.90 | $89.03 | $810.93 | $0.00 | — | — | — | Yes | active |
| May 25, 202605:39 PM | $721.90 | $89.03 | $810.93 | $1.76 | — | — | — | Yes | active |
| May 23, 202601:44 PM | $720.14 | $88.79 | $808.93 | $0.00 | — | — | — | Yes | active |
| May 23, 202601:43 PM | $720.14 | $88.79 | $808.93 | $0.00 | — | — | — | Yes | active |
| May 23, 202601:43 PM | $720.14 | $88.79 | $808.93 | $0.00 | — | — | — | Yes | active |
| May 23, 202601:42 PM | $720.14 | $88.79 | $808.93 | $0.00 | — | — | — | Yes | active |
| May 23, 202601:42 PM | $720.14 | $88.79 | $808.93 | $40.01 | — | — | — | Yes | active |
| May 22, 202612:26 PM | $680.13 | $88.79 | $768.92 | $0.00 | — | — | — | Yes | active |
| May 22, 202612:25 PM | $680.13 | $88.79 | $768.92 | $0.00 | — | — | — | Yes | active |
| May 22, 202612:25 PM | $680.13 | $88.79 | $768.92 | $0.00 | — | — | — | Yes | active |
| May 22, 202612:24 PM | $680.13 | $88.79 | $768.92 | $0.30 | USSS05−$5.00 | — | — | Yes | active |
| May 21, 202612:29 PM | $680.43 | $88.85 | $769.28 | $0.00 | — | — | — | Yes | active |
| May 21, 202612:29 PM | $680.43 | $88.85 | $769.28 | $0.00 | — | — | — | Yes | active |
| May 21, 202612:28 PM | $680.43 | $88.85 | $769.28 | $0.00 | — | — | — | Yes | active |
| May 21, 202612:28 PM | $680.43 | $88.85 | $769.28 | $0.00 | USSS35−$35.00 | — | — | Yes | active |
| May 19, 202612:31 PM | $680.43 | $88.85 | $769.28 | $0.00 | — | — | — | Yes | active |
| May 19, 202612:30 PM | $680.43 | $88.85 | $769.28 | $0.00 | — | — | — | Yes | active |
| May 19, 202612:30 PM | $680.43 | $88.85 | $769.28 | $0.00 | — | — | — | Yes | active |
| May 19, 202612:29 PM | $680.43 | $88.85 | $769.28 | $1.66 | USSS35−$35.00 | — | — | Yes | active |
| May 18, 202612:29 PM | $678.77 | $88.61 | $767.38 | $0.00 | — | — | — | Yes | active |
| May 18, 202612:29 PM | $678.77 | $88.61 | $767.38 | $0.00 | — | — | — | Yes | active |
| May 18, 202612:28 PM | $678.77 | $88.61 | $767.38 | $0.00 | — | — | — | Yes | active |
| May 18, 202612:28 PM | $678.77 | $88.61 | $767.38 | $41.69 | USSS12−$12.00 | — | — | Yes | active |
| May 17, 202610:22 AM | $720.46 | $88.85 | $809.31 | $0.00 | — | — | — | Yes | active |
| May 17, 202610:21 AM | $720.46 | $88.85 | $809.31 | $0.00 | — | — | — | Yes | active |
| May 17, 202610:21 AM | $720.46 | $88.85 | $809.31 | $0.00 | — | — | — | Yes | active |
| May 17, 202610:20 AM | $720.46 | $88.85 | $809.31 | $0.00 | — | — | — | Yes | active |
| May 17, 202610:20 AM | $720.46 | $88.85 | $809.31 | $0.00 | — | — | — | Yes | active |
| May 16, 202610:28 AM | $720.46 | $88.85 | $809.31 | $0.00 | — | — | — | Yes | active |
| May 16, 202610:27 AM | $720.46 | $88.85 | $809.31 | $0.00 | — | — | — | Yes | active |
| May 16, 202610:27 AM | $720.46 | $88.85 | $809.31 | $0.00 | — | — | — | Yes | active |
| May 16, 202610:26 AM | $720.46 | $88.85 | $809.31 | $0.00 | — | — | — | Yes | active |
| May 15, 202609:53 AM | $720.46 | $88.85 | $809.31 | Initial | — | — | — | Yes | active |
AliExpress - SIAECOSYS Official Store(13 records) | |||||||||
| May 29, 202603:01 PM | $696.86 | $81.42 | $778.28 | $0.63 | — | — | — | No | active |
| May 28, 202601:30 PM | $696.23 | $81.31 | $777.54 | $0.75 | — | — | — | No | active |
| May 27, 202602:48 PM | $695.48 | $81.25 | $776.73 | $0.00 | — | — | — | No | active |
| May 25, 202607:17 PM | $695.48 | $81.25 | $776.73 | $1.71 | — | — | — | No | active |
| May 23, 202602:58 PM | $693.77 | $81.03 | $774.80 | $38.54 | — | — | — | No | active |
| May 22, 202601:24 PM | $655.23 | $81.03 | $736.26 | $0.29 | USSS05−$5.00 | — | — | No | active |
| May 21, 202601:27 PM | $655.52 | $81.09 | $736.61 | $0.00 | USSS35−$35.00 | — | — | No | active |
| May 19, 202601:29 PM | $655.52 | $81.09 | $736.61 | $1.61 | USSS35−$35.00 | — | — | No | active |
| May 18, 202601:28 PM | $653.91 | $80.87 | $734.78 | $40.17 | USSS12−$12.00 | — | — | No | active |
| May 17, 202611:31 AM | $694.08 | $81.09 | $775.17 | $0.00 | — | — | — | No | active |
| May 16, 202611:37 AM | $694.08 | $81.09 | $775.17 | $0.00 | — | — | — | No | active |
| May 15, 202610:46 AM | $694.08 | $81.09 | $775.17 | $41.47 | SRUS02−$2.00 | — | — | No | active |
| May 3, 202609:08 AM | $652.61 | $88.43 | $741.04 | Initial | — | — | — | Yes | active |
AliExpress - Zhejiang Siaecosys Technology Co., Ltd. Store(5 records) | |||||||||
| May 29, 202603:21 PM | $464.66 | $70.35 | $535.01 | $0.63 | — | — | — | No | active |
| May 28, 202601:49 PM | $464.03 | $70.25 | $534.28 | $0.30 | — | — | — | No | active |
| May 27, 202603:10 PM | $463.73 | $70.21 | $533.94 | $0.00 | — | — | — | No | active |
| May 25, 202607:36 PM | $463.73 | $70.21 | $533.94 | $33.84 | — | — | — | No | active |
| May 3, 202609:08 AM | $429.89 | $69.73 | $499.62 | Initial | — | — | — | Yes | active |
QS Motor(1 record) | |||||||||
| Apr 25, 202604:38 AM | $515.29 | — | $515.29 | Initial | — | — | — | Yes | active |
Reviews
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Specifications
Type
- VESC Based
- No
- Cooling
- Air
Electrical
- Voltage Range
- 60–84V
- Continuous Amps
- 450A
- Max Phase Amps
- 850A
Motor Features
- Regen Support
- Yes
- Drive Mode
- FOC
- Sensor Mode
- Dual Mode
- Field Weakening
- Yes
- Self-Learning
- Yes
- Dual Motor Support
- No
- Controller Pairing
- No
Inputs
- Throttle Support
- Yes
- PAS Support
- No
Display
- Supports Display
- Yes
- Requires Display
- No
- Protocols
- SiAECOSYS ONE-LIN
Power Switch
- Supports Power Switch
- Yes
- Requires Power Switch
- No
- Requires Pre-charge
- No
Programming
- Via Display
- No
- Via Phone
- Yes
- Via PC
- Yes
Physical
- Weight
- 3.5 kg
- Dimensions (L×W×H)
- 222mm × 142mm × 71mm
- IP Rating
- IP67
Ports & Connectors
Power Input2-position Screw Terminal Block
Power
| Pin | Wire color | Function |
|---|---|---|
| 1 | Red | Battery + |
| 2 | Black | Battery - |
Phase Wires3-position Screw Terminal Block
Motor Phase
| Pin | Wire color | Function |
|---|---|---|
| 1 | Yellow | Phase A |
| 2 | Green | Phase B |
| 3 | Blue | Phase C |
Function Harness
Hall Sensor
TemperatureHall Sensor
| Pin | Wire color | Function |
|---|---|---|
| 1 | Red | 5V Power |
| 2 | White | Motor Temp |
| 3 | Black | Ground |
| 4 | Blue | Hall C |
| 5 | Green | Hall B |
| 6 | Yellow | Hall A |
E-Key Lock1 wire
Power Switch
| Pin | Wire color | Function |
|---|---|---|
| 1 | Orange | E-Lock / Ignition |
Display (ONE-LIN)
Display
| Pin | Wire color | Function |
|---|---|---|
| 1 | Light Blue | One-Wire Comm |
High/Low Speed
Display
| Pin | Wire color | Function |
|---|---|---|
| 1 | Yellow / White | Gear High |
| 2 | Black | Ground |
| 3 | Blue / White | Gear Low |
Backward Gear
Display
| Pin | Wire color | Function |
|---|---|---|
| 1 | Brown / White | Reverse Signal |
| 2 | Black | Ground |
Cruise/BOOST
BrakeDisplay
| Pin | Wire color | Function |
|---|---|---|
| 1 | Blue / Red | Parking / E-Brake |
| 2 | Brown | Gear Sport |
Throttle
Throttle
| Pin | Wire color | Function |
|---|---|---|
| 1 | Black | Ground |
| 2 | Green / White | Throttle Signal |
| 3 | Red / White | 5V Power |
Brake (High 12V)
Brake
| Pin | Wire color | Function |
|---|---|---|
| 1 | Gray | Brake Signal (High) |
Brake (Low 0V)
Brake
| Pin | Wire color | Function |
|---|---|---|
| 1 | Black | Ground |
| 2 | Yellow / Green | Brake Signal (Low) |
Speed Pulse
Speed Sensor
| Pin | Wire color | Function |
|---|---|---|
| 1 | Purple | Speed Signal |
Programming Port
UART
| Pin | Wire color | Function |
|---|---|---|
| 1 | Brown / Green | 5V Power |
| 2 | Red / Black | UART RX |
| 3 | Brown / Blue | UART TX |
| 4 | Black | Ground |
Alarm Power
security
| Pin | Wire color | Function |
|---|---|---|
| 1 | Black | Ground |
| 2 | Pink | Alarm Power |
Anti-theft
security
| Pin | Wire color | Function |
|---|---|---|
| 1 | Orange | Anti-Theft Key |
| 2 | Black / White | Anti-Theft Signal |
| 3 | Brown / Red | Wheel Signal |
Main Connector
