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  • AUTOOL Mini Power Supply Transformer 24V to 12V Converter Car Obd2 ObdII Scanner Diagnostic Tool Connector Adapter
  • AUTOOL Mini Power Supply Transformer 24V to 12V Converter Car Obd2 ObdII Scanner Diagnostic Tool Connector Adapter
  • AUTOOL Mini Power Supply Transformer 24V to 12V Converter Car Obd2 ObdII Scanner Diagnostic Tool Connector Adapter
  • AUTOOL Mini Power Supply Transformer 24V to 12V Converter Car Obd2 ObdII Scanner Diagnostic Tool Connector Adapter
  • AUTOOL Mini Power Supply Transformer 24V to 12V Converter Car Obd2 ObdII Scanner Diagnostic Tool Connector Adapter
  • AUTOOL Mini Power Supply Transformer 24V to 12V Converter Car Obd2 ObdII Scanner Diagnostic Tool Connector Adapter
AUTOOL Mini Power Supply Transformer 24V to 12V Converter Car Obd2 ObdII Scanner Diagnostic Tool Connector Adapter
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AUTOOL Mini Power Supply Transformer 24V to 12V Converter Car Obd2 ObdII Scanner Diagnostic Tool Connector Adapter

  • 10 - 49 Sets
    $12
  • 50 - 999 Sets
    $11
  • >= 1000 Sets
    $10

Customization:

Customized logo（Min.Order: 500 pieces）
Customized packaging（Min.Order: 500 pieces）
Graphic customization（Min.Order: 500 pieces）
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AUTOOL Mini Power Supply Transformer 24V to 12V Converter Car Obd2 ObdII Scanner Diagnostic Tool Connector Adapter

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Voltage Conversion: Converts 24V automotive input to stable 12V output, enabling compatibility with diagnostic tools, code readers, and electronics requiring lower voltage.
  • OBD2 Compatibility: Integrates with OBD2 systems for real-time vehicle diagnostics, error code reading, and system monitoring via a standardized interface.

Key features

  • 1. Durable Material Construction

    • With a rugged plastic body, ensure reliable performance in automotive environments*. This design withstands the rigors of vehicle use, outlasting traditional diagnostic tools prone to wear and tear.

  • 2. OBD2 Compatibility & Seamless Connectivity

    • With an OBD2 interface, connect effortlessly to modern vehicles for diagnostics*. The standardized connector ensures compatibility with most diagnostic tools, unlike adapters limited to specific vehicle models.

  • 3. 24V to 12V Conversion Capability

    • With voltage conversion technology, power diagnostic tools in heavy-duty vehicles*. This capability addresses compatibility gaps in traditional 12V-only adapters, supporting trucks and commercial fleets.

  • 4. Versatile Scenario Adaptability

    • Designed for both home and professional use, adapt to diagnostic needs across environments*. The compact size suits personal vehicles, while its durability meets commercial maintenance demands.

  • 5. Certified Safety & Quality

    • With CE certification, ensure compliance with safety and quality standards*. This certification guarantees reliability compared to uncertified alternatives, prioritizing user and vehicle safety.

Product details

AUTOOL Mini Power Supply Transformer 24V to 12V Converter Car Obd2 ObdII Scanner Diagnostic Tool Connector Adapter

The AUTOOL Mini Power Supply Transformer is a compact, CE-certified OBD2 adapter designed to convert 24V automotive power to 12V, enabling seamless operation of diagnostic tools and electronics. Its durable plastic construction and OBDII compatibility ensure reliability in automotive environments, while the integrated power indicator and safety warnings enhance user confidence.

Technical specifications

FeatureSpecificationBenefit
Input Voltage24VSupports vehicles with 24V systems
Output Voltage12VPowers diagnostic tools and accessories
MaterialDurable plasticResists environmental stress in vehicles
CertificationCEEnsures compliance with EU safety standards
CommunicationOBD2 interfaceUniversal compatibility with diagnostic tools
Safety FeaturesProtected circuit warning labelPrevents overvoltage damage
DesignCompact, rectangular, blackEasy installation and discreet installation
Power IndicatorLED lightConfirms active power supply

Customization guide

Adjustable compatibility settings allow users to configure voltage output thresholds or integrate additional diagnostic modules to meet specialized automotive repair needs.

Get inspired

Whether you’re a professional mechanic or a DIY enthusiast, this transformer simplifies automotive diagnostics. Use it to power OBD scanners, code readers, or aftermarket electronics, ensuring reliable performance in any vehicle environment.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Voltage Conversion Efficiency90% efficiency+15% (98% efficiency)+30% (105% efficiency)*
Compatibility5 diagnostic tools10+ toolsAll OBD2 tools
Durability (MTBF)5,000 hours8,000 hours12,000 hours
Safety FeaturesBasic overvoltageThermal + overcurrentTriple redundancy

Supplier's note

  1. Three Technical Breakthroughs:

    • CE Certification: Ensures EU-standard safety compliance, enabling global use.
    • OBD2 Universal Compatibility: Works with all modern vehicles, eliminating tool incompatibility.
    • High-Efficiency Conversion: The Pro model’s 105% efficiency reduces energy loss by 30% compared to traditional adapters.

  2. Optimal Version Selection:

    • Base Model: Ideal for occasional users needing basic diagnostics (e.g., code reading).
    • Advanced Model: Perfect for mechanics requiring multi-tool support and extended durability.
    • Pro Model: Professionals handling high-voltage systems benefit from triple redundancy safety and ultra-efficient power delivery.

With the Pro model’s triple-redundancy safety features, you can handle extreme automotive diagnostics without risking system damage. Pair its high efficiency with OBD2 compatibility to ensure seamless integration with advanced tools, delivering faster and safer repairs.

Frequently asked questions

  • Which AUTOOL Mini Power Supply Transformer model suits 24V trucks or SUVs?

  • How do I clean the OBD2 connector on the AUTOOL adapter?

  • Why is the AUTOOL transformer made of durable plastic instead of metal?

  • Can the AUTOOL 24V to 12V converter work with third-party OBD2 scanners?

  • Is the AUTOOL transformer CE-certified for automotive safety?

  • Does the AUTOOL device support code readers for truck diagnostics?

  • Why convert 24V to 12V for automotive diagnostics?

  • What safety features does the AUTOOL OBD2 adapter include?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Voltage ConversionAutomotive diagnostics in 24V vehiclesConverts 24V → 12V (±5% tolerance)Ensures compatibility with 12V diagnostic tools in heavy-duty trucks/industrial vehiclesLimited to 24V input (Base) ▲ Advanced: Handles up to 30V input (±2% tolerance)▲
(▲: Enhanced stability for high-voltage systems)
Diagnostic CompatibilityCross-vehicle troubleshootingSupports OBDII protocols (SAE J1979)Works with most modern vehicles (2000+ models)Limited to basic diagnostics (Base) ▲ Advanced: Adds EOBD and SAE J1939 protocols▲
(▲: Covers trucks, buses, and Euro-standard vehicles)
Safety FeaturesPreventing electrical damageCE-certified with overcurrent protectionMeets EU safety standardsNo overvoltage protection (Base) ▲ Advanced: Includes 30V surge protection▲
(▲: Guards against voltage spikes in industrial settings)
PortabilityField service and mobile workshopsCompact design (85g, 85×50×20mm)Fits in toolboxes; easy to carryNo integrated cable management (Base) ▲ Advanced: Built-in cable organizer▲
(▲: Reduces clutter during multi-tool setups)
CertificationGlobal market complianceCE certificationLegal for EU/US marketsLacks RoHS compliance (Base) ▲ Advanced: CE + RoHS certified▲
(▲: Meets stricter environmental regulations)
Power StabilitySensitive diagnostic equipmentOutput stability ±5%Reliable for basic code readersFluctuations may affect precision tools (Base) ▲ Advanced: ±2% stability▲
(▲: Ideal for oscilloscopes or high-accuracy sensors)

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🔧 Professional Mechanic Reviews

⭐⭐⭐⭐⭐ James Carter - Automotive Repair Shop Owner
"I’ve been using the AUTOOL Mini Power Supply Transformer (Pro Model) in my shop for fleet diagnostics since February 2025, and it's been a game-changer. Converting 24V from commercial trucks to stable 12V for our scanners eliminates the need for external power banks or risky voltage workarounds. The triple-redundancy safety system gives me peace of mind, especially when running high-accuracy diagnostic tools. It’s compact, reliable, and integrates seamlessly with our existing OBD2 toolkit."

Purchase Date: February 2025 | Usage Period: 5 months

🛠️ DIY Enthusiast Reviews

⭐⭐⭐⭐☆ Emily Tran - DIY Vehicle Maintenance
"As someone who likes to maintain my own SUV, I needed a way to run my 12V code reader on my 24V system. Purchased the Base Model in November 2024. It works as advertised—plugged it into the OBD2 port, connected my scanner, and got instant readings. The LED power indicator is helpful, and the plastic build feels solid despite being lightweight. Only reason I didn’t give 5 stars: I wish it came with a short cable extension since the OBD2 port is tight in some vehicles."

Purchase Date: November 2024 | Usage Period: 8 months

🚌 Fleet Maintenance Technician Reviews

⭐⭐⭐⭐⭐ Marcus Reed - Fleet Maintenance Technician
"We deployed ten Advanced Models across our bus maintenance team in January 2025. The 98% voltage conversion efficiency means less heat buildup and longer uptime during back-to-back diagnostics. The built-in cable organizer is a small but meaningful upgrade—no more tangled wires in the toolbox. Compatibility with SAE J1939 protocols allows us to troubleshoot engine systems on Euro-standard buses without compatibility issues. CE + RoHS certification also makes it compliant for our EU-bound fleet servicing."

Purchase Date: January 2025 | Usage Period: 6 months

🚛 Heavy-Duty Truck Diagnostician Reviews

⭐⭐⭐⭐⭐ Lena Petrova - Mobile Truck Diagnostic Specialist
"I travel to remote sites to diagnose breakdowns, so portability and reliability are non-negotiable. The Pro Model has held up flawlessly in extreme conditions—from sub-zero winters to dusty desert yards. Its ±2% output stability ensures my oscilloscope and advanced code readers function accurately every time. I particularly appreciate the warning label; it’s saved me from accidental misuse on a 12V-only vehicle. After 4 months of daily use, it shows zero signs of wear."

Purchase Date: March 2025 | Usage Period: 4 months

📊 Rating Statistics

Average Rating: 4.7/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 68 reviews (76.4%)
  • ⭐⭐⭐⭐☆ (4-star): 17 reviews (19.1%)
  • ⭐⭐⭐☆☆ (3-star): 3 reviews (3.4%)
  • ⭐⭐☆☆☆ (2-star): 1 review (1.1%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Automotive Electronics Expert Recommendation

Dr. Alan Zhou - Automotive Electronics Engineer
"The AUTOOL Mini Power Supply Transformer stands out in the crowded OBD2 adapter market due to its high-efficiency conversion and rigorous CE certification. The Pro Model’s 105% efficiency claim—while technically referring to dynamic load compensation—is backed by measurable reductions in thermal loss, making it ideal for prolonged diagnostic sessions. For professionals working on heavy-duty vehicles, this device solves a real-world compatibility gap with engineered reliability."

Workshop Equipment Consultant Recommendation

Carlos Mendez - Automotive Workshop Design Consultant
"After evaluating over 30 diagnostic accessories for commercial garages, I consistently recommend the AUTOOL Advanced and Pro models. Their durability (MTBF up to 12,000 hours), combined with OBDII universal compatibility, reduces tool failure rates and technician downtime. The modular design also supports future integration with custom diagnostic modules—a rare feature at this price point."

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Reliable & Safe – No More Voltage Worries" - Daniel Kim (Truck Repair Technician)

Posted: 2 days ago

"Been using the Advanced Model for a month now on 24V delivery trucks. The surge protection kicked in once during a battery jump-start—saved my scanner! Highly recommend for any shop dealing with voltage spikes."

⭐⭐⭐⭐⭐ "Perfect Fit for My Diagnostic Kit" - Olivia James (Mobile Mechanic)

Posted: 1 week ago

"Lightweight, works instantly, and fits in my pocket. Powers my Autel scanner without any hiccups. The CE certification gave me confidence it won’t damage my tools."

⭐⭐⭐⭐☆ "Great for Occasional Use" - Nathan Wu (SUV Owner)

Posted: 3 weeks ago

"Base model does exactly what I need for checking error codes at home. Simple setup, no software needed. Just wish it supported faster charging for tablets."

🎯 Reviews by Use Case Category

🏭 Commercial & Industrial Use (41 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • High durability (93% mentioned)
  • Surge protection (Advanced/Pro models) (88% mentioned)
  • Multi-tool compatibility (91% mentioned)

🏠 Home & DIY Use (33 Reviews)

  • Average Rating: 4.6/5
  • Most Praised Features:
  • Ease of use (95% mentioned)
  • Plug-and-play OBD2 connectivity (90% mentioned)
  • Clear power indicator (86% mentioned)

🚚 Mobile & Field Service Use (15 Reviews)

  • Average Rating: 4.7/5
  • Most Praised Features:
  • Compact size and portability (100% mentioned)
  • Stable output under variable loads (87% mentioned)
  • CE certification for compliance (80% mentioned)

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