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About
AUTOOL designs and builds professional automotive testing and maintenance equipment in Shenzhen.
About AUTOOL
Meet AUTOOL at AAPEX & SEMA 2026PR420Stabilized Power Supply
AUTOOL PR420 automotive programming power supply for stable high-current DC power, ECU programming, and battery charging.
- Programming Power Supply Mode
- Battery Charging Mode
- Battery Repair Mode
- Showroom Mode
- Comprehensive Safety Protections
- Rated Input Voltage
- 110V+25%
- Rated Input Power
- 1200W
- Input Frequency
- 60Hz
PR420 at a glance
- Rated Input Voltage
- 110V+25%
- Rated Input Power
- 1200W
- Input Frequency
- 60Hz
- No-Load Power Loss
- 6W
Overview
PR420 Stabilized Power Supply
The AUTOOL PR420 is a professional automotive inverter programming power supply developed by AUTOOL. It integrates stable voltage supply, smart charging, battery maintenance, and emergency start functions into one device. Equipped with programming power supply mode, battery charging mode, adjustable power supply mode, battery repair mode, and vehicle forced start mode, it delivers continuous, stable, and efficient high-current DC power.
Product Features
Programming Power Supply Mode:During ECU programming, ECU flashing, software upgrades, module matching, and online coding, the PR420 provides stable voltage and up to 120A of continuous current for the vehicle.
Battery Charging Mode:Utilizes an efficient three-stage charging mode with a 40A charging current. The charging current is intelligently adjusted based on battery status to provide the optimal charging curve.
Battery Repair Mode:Uses pulse repair technology to improve the performance of weakened batteries. Supports lead-acid, AGM, GEL, and EFB battery types, meeting the charging and maintenance needs of cars, trucks, motorcycles, and more.
Showroom Mode:During vehicle functional demonstrations in showrooms, various in-vehicle devices consume significant power. This mode provides stable power support to ensure the normal operation of headlights, multimedia systems, electronic instrument panels, and other electrical components, delivering a complete vehicle display experience.
Comprehensive Safety Protections:Includes unconnected battery protection, reverse connection protection, overvoltage protection, undervoltage protection, overheat protection, output overcurrent protection, output overvoltage protection, short circuit protection, and emergency stop.
2.8-Inch LCD Display:Features a 2.8-inch LCD color display. All functions can be operated directly through the control panel buttons. The clear operation process and easy-to-read data display significantly improve repair efficiency.
Multi-Language Support: 11 languages available — English, French, German, Italian, Spanish, Russian, Polish, Dutch, Portuguese, Turkish, and Vietnamese.
Unique Design Details:
Anti-Slip Insulated Handle
The device handle features an anti-slip insulated layer, making it easy to move while preventing electric shock risks during operation.
3m / 16mm² Red & Black Clamp Cables
The clamp cables are color-coded for easy identification: red (positive) and black (negative). Equipped with an Anderson connector for reverse connection protection. The entire output cable is 3 meters long, allowing remote contact with electrodes. The 16mm² cable diameter is designed to meet high-current output requirements.
3-Year Warranty:For equipment damage caused by non-human factors, AUTOOL provides free replacement parts within three years. If you have any questions, please feel free to contact us—we will respond within 24 hours. We are committed to being responsible for our products, our customers, and our partners.
Specifications
Technical data
PR420-110V
- Rated Input Voltage
- 110V+25%
- Rated Input Power
- 1200W
- Input Frequency
- 60Hz
- No-Load Power Loss
- 6W
- Lead-Acid Battery Charging Current/Voltage
- 20A/12V
- Efficiency
- 81%
- Programming Power Supply Current
- 120A
- Programming Power Supply Voltage Range
- 10.8~16.0V
- Insulation Grade
- F
- Enclosure Protection Level
- IP21S
- PR420-220V
- Rated Input Voltage
- 220V+25%
- Rated Input Power
- 1200W
- Input Frequency
- 50Hz
- No-Load Power Loss
- 6W
- Lead-Acid Battery Charging Current/Voltage
- 20A/12V
- Efficiency
- 81%
- Programming Power Supply Current
- 120A
- Programming Power Supply Voltage Range
- 10.8~16.0V
- Insulation Grade
- F
- Enclosure Protection Level
- IP21S
Videos
See the PR420 in action
Play video: AUTOOL PR420 Stabilized Power Supply | Stable Power for ECU Programming & 12V VehiclesAUTOOL PR420 Stabilized Power Supply | Stable Power for ECU Programming & 12V Vehicles
Support
Manuals & downloads
User manual
AUTOOL-PR420-Manual.pdf
Support library
User manuals for PR420
Support library
Software & updates for PR420

















