EV Battery Health Certification

Independent Verification of EV Battery Health

Using embedded modem data from the vehicle, JD Power and Motorq—working directly with OEMs—provide an independent, third-party measurement of EV battery health for current owners, dealers and potential used-EV buyers. This creates a trusted, data-driven view of battery performance throughout the vehicle’s life cycle.

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What the Study Measures

A Clear, Connected View of EV Battery Condition

Evaluates real-time vehicle data to independently assess battery health metrics across four key dimensions:

• Degradation trends
• Usable capacity
• Charge behavior and patterns
• Thermal performance indicators

Tracks:

• OEM-authorized embedded modem data (not retailer-reported information)

How It Works

How EV Battery Health Certification Works

• Uses OEM-authorized embedded modem data processed through Motorq’s analytics platform
• Evaluates battery health, degradation, and performance patterns
• Provides an independent, third-party assessment of battery condition
• Does not rely on retailer-reported information

Core Strengths

Greater Transparency, Stronger Trust

• Provides third-party validation from the leaders in vehicle quality and connected-vehicle analytics
• Reduces uncertainty around used EV battery performance
• Helps dealers give buyers confidence with objective, data-backed certification
• Offers fleets and finance companies clarity on long-term asset health

Business Impact

Increase Confidence, Reduce Risk

• Reduces financial uncertainty for EV owners and used-vehicle buyers
• Helps OEMs mitigate value loss and potential warranty exposure by monitoring vehicles in the field
• Strengthens dealer marketing and sales efforts with trusted certification
• Builds credibility in the used-EV marketplace with transparent battery reporting

Press Release Information

JD Power issues a national press release highlighting key findings and top-to-bottom rankings from the study.

Who should use it

Designed for Dealers and EV Resellers

• Franchise and independent dealers
• Certified pre-owned programs
• EV remarketers and auction partners
• Fleet and finance organizations managing EV assets

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Insights Available at a Touch of a Button

Subscribers to this study have full access to benchmark reporting, competitor analysis, and more with PowerSource.

Ready to power what’s next?

Whether you’re launching new models, improving dealer performance, or advancing finance and insurance strategies, JD Power is ready to help you make smarter decisions – with confidence and clarity.