MS309 Pro OBD2 Code Reader – Live Data, Battery Voltage Monitoring & I/M Status
• Enhanced OBD2 Diagnostic Tool
The MS309 Pro is an upgraded OBD II code reader that includes all essential functions of the MS309 while adding live data stream analysis, battery voltage detection, battery voltage monitoring, and battery life assessment. It supports reading and clearing diagnostic trouble codes (DTCs), viewing freeze-frame data, checking I/M readiness status, and retrieving detailed vehicle information for more comprehensive diagnostics.
• Live Data & Battery Health Monitoring
With real-time data stream viewing and integrated battery voltage monitoring, the MS309 Pro allows users to observe vehicle operating conditions and battery status in real time, helping improve diagnostic accuracy and maintenance efficiency.
• Multilingual Support for Global Markets
The MS309 Pro supports 10 languages including English, French, German, Dutch, Spanish, Chinese, Italian, Polish, Finnish, and Portuguese, making it suitable for international workshops, distributors, and DIY users.
• Product Specifications
Model: MS309 Pro Product Net Weight: 257 g Package Size: 200 × 130 × 28 mm Packaging Quantity: 50 pcs per carton Carton Size: 43 × 36 × 31.5 cm Carton Gross Weight: 13.5 kg
• A Smart Choice for Advanced Basic Diagnostics
By combining essential OBD2 functions with live data streaming and battery health monitoring, the MS309 Pro provides a more capable solution for routine diagnostics and preventive vehicle maintenance.
- Return Policy
- Shipping Policy
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




