CHEPQ BT309 Professional 12V/24V Car Battery Diagnostic Tester
The CHEPQ BT309 is a high-precision car battery diagnostic tool engineered for 12V and 24V automotive lead-acid batteries. Featuring a significantly upgraded 2.8-inch TFT color display, this device provides crystal-clear, intuitive results that allow technicians and DIYers to assess battery health with laboratory-level accuracy.
Whether you are managing a professional workshop or maintaining a personal vehicle, the BT309 offers deep insights into your electrical system, ensuring you catch potential failures before they lead to costly breakdowns.
Professional Diagnostic Suite
Comprehensive Battery Health: Perform high-accuracy diagnostics across a wide range of battery types. The BT309 supports multiple international standards, including CCA (100–2000), JIS, DIN, EN, and more.
12V & 24V Versatility: Designed for a broad application range, from standard passenger cars and SUVs to heavy-duty trucks and commercial equipment.
Full System Analysis:
Startup Test: Analyze the cranking voltage and time to ensure the starting system is reliable.
Charge Test: Monitor the charging system’s output to verify the alternator is performing at peak efficiency.
Load Test: Assess the battery's ability to maintain a stable voltage under heavy electrical demand.
Real-Time Waveform Monitoring: Visualize voltage fluctuations in real-time to identify intermittent electrical abnormalities that standard testers might miss.
Data Printing & Replay: Easily review previous test results or print data for professional customer reporting.
Hardware & Construction
Vivid 2.8" TFT Screen: The 320×240 resolution screen offers high-contrast visibility, even in dimly lit garage environments.
Rugged ABS Shell: Built to withstand the rigors of professional use, the durable housing ensures longevity in high-intensity workshops.
Future-Proof Updates: Features a modern Type-C interface for easy software updates, ensuring your tool stays compatible with the latest battery technologies.
Technical Specifications
Feature | Specification |
Model | CHEPQ BT309 |
Primary Use | Professional Car Battery Diagnostic |
Compatible Voltage | 12V – 24V |
CCA Detection Range | 100 – 2000 CCA |
Battery Range | 30 – 220 AH |
Display | 2.8-Inch TFT Color Screen (320×240) |
Device Size | 156 × 86 × 30 mm |
Weight | 0.31 kg |
Why the BT309 is the Smarter Choice
The BT309 removes the guesswork from electrical maintenance. By combining wide voltage compatibility with advanced waveform monitoring and data printing, it provides a comprehensive car battery diagnostic experience that is as efficient as it is accurate.
Equip your workshop with the CHEPQ BT309—the ultimate reliable partner for precision battery and electrical system analysis.
1. 14-Day Return Guarantee
We offer a 14-day return window. You have 14 days from the date of delivery to request a return for your item.
2. Eligibility Criteria
To qualify for a return, the item must meet the following conditions:
The product must be in its original, unused condition.
All original packaging, tags, and accessories must be included.
A valid proof of purchase or order number is required.
3. Return Shipping Costs
Defective or Incorrect Items: If the return is due to a manufacturer defect, damage upon arrival, or the wrong item being sent, CHEPQ will cover all return shipping costs.
Change of Mind: For returns due to personal preference or accidental orders, the customer is responsible for the return shipping fees.
4. Return Process
Email service@chepq.com to initiate your return request.
Upon approval, you will receive specific instructions and the return warehouse address.
Do not send items back without prior authorization, as they will not be accepted.
5. Refunds
Once we receive and inspect your returned item, we will notify you of the approval or rejection of your refund. Approved refunds are processed automatically to your original payment method within 5–7 business days.
6. Contact Information
For any questions regarding shipping or returns, please reach us at:
Email: service@chepq.com
