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VOTOL EM550 is VOTOL's flagship high-power 48-72V sinewave controller with 550A rated DC / 1000A boost / 1700A peak phase current (≤72kW max power). 60-72 MOSFET design for 14-18kW PMSM/BLDC motors — targeting high-performance e-moto / motorcycle conversions with QS205 / QS273-class hub motors or QS165 mid-drives. Features 200% flux weakening, IP67 waterproofing, ≥92% max efficiency. Uses VOTOL's New Version architecture: TE Ampseal 23-pin main signal connector + screw terminals for battery/phase. Dual-protocol: SIAECOSYS LIN and CAN BUS. Programmable via PC with V2 CAN USB cable.</description> <parameter name="adminNotes">Source: AliExpress DUN TECH Store + Dun Electric Store + Dun Electrical Store listings. Authoritative specs: - Rated DC 550A / Boost DC 1000A / Peak Phase 1700A - 48-72V / Max Power 72,000W / 60-72 FETs (varies by seller listing — 60 per DUN TECH, 72 per Dun Electric) - Matched motor: 14-18kW - Max Efficiency 92% / IP67 / 200% flux weakening - Weight 3600g / Size 272×154×75.5mm Flagship of VOTOL's current lineup. New Version Ampseal 23-pin architecture with V2 CAN USB cable compatibility.

In brief: 48–72V controller. 550A continuous. 1000A peak. Sinewave, sensored, regen, field weakening support. From $588 across 2 sellers.

Type

VESC Based
No

Electrical

Voltage Range
48–72V
Continuous Amps
550A
Peak Amps
1000A
Max Phase Amps
1700A

Motor Features

Regen Support
Yes
Drive Mode
Sinewave
Sensor Mode
Sensored
Field Weakening
Yes
Self-Learning
No
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, SiAECOSYS CAN BUS

Power Switch

Supports Power Switch
Yes
Requires Power Switch
Yes
Requires Pre-charge
Yes

Programming

Via Display
No
Via Phone
No
Via PC
Yes

Physical

Weight
3.6kg
Dimensions (L×W×H)
272.0mm × 154.0mm × 75.5mm

Ports & Connectors

Power Input2-position Screw Terminal Block
Power
1Battery +
2Battery -
Phase Wires3-position Screw Terminal Block
Motor Phase
1Phase A
2Phase B
3Phase C
Main Signal Connector (Ampseal 23-pin)
E-lock
Power Switch
1Battery +
2Power Switch Signal
LIN1 wire
Display
1One-Wire Comm
Mode (1,2,3)
Display
1Gear Low
2Gear Medium
3Gear High
R mode
Display
1Gear Reverse
2Ground
S mode
Display
1Gear Sport
Throttle
Throttle
15V Power
2Ground
3Throttle Signal
High Brake
Brake
1Brake Signal
P mode
Brake
1Parking / E-Brake
Program Debugging
UART
1Ground
25V Power
3UART TX
4UART RX

Included Components

Frequently Asked Questions

Other Controllers

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