Ensure access to vehicle and data
Before the battery test, the vehicle must be available for physical inspection and digital readout. This means that:
- The vehicle must be fully identifiable via registration number or VIN.
- The high-voltage battery must be active and accessible for diagnostics.
- The vehicle must be able to start and communicate with the test system.
- Any error messages or limitations should be documented in advance.
Access to correct vehicle data ensures that the test result is accurate and comparable.
Technical requirements for conducting the battery test
- The battery in the electric vehicle/plug-in hybrid matches the list* of vehicles that DEKRA can test.
- For the battery test to be carried out, the battery must be charged between 40–80 percent (State of Charge).
- Battery temperature between +10°C to +30°C (may differ significantly from the ambient temperature).
- Individual cell temperature differences within the battery <2°C.
- DEKRA’s battery test can only be performed on the batteries that DEKRA has verified and checked. Even if the make and model match, the battery in the vehicle may differ between different VIN series.
Practical preparations in the business
For companies performing tests in-house via DEKRA’s SaaS solution, the following is important:
- Ensure that responsible personnel have access to the test system.
- Use compatible diagnostic equipment according to DEKRA’s specifications.
- Perform the test in a safe working environment adapted for work with electrified vehicles.
- Plan the test in connection with, for example, trade-ins, appraisals, or delivery inspections.
The test is designed to be integrated into existing work processes without disrupting daily operations.
What the battery test includes
DEKRA’s test analyzes the battery’s health (State of Health, SoH) and identifies the battery’s current capacity in relation to its original performance. The result is presented in the form of a certificate. DEKRA Battery Readout generates a report on the battery’s estimated performance.
DEKRA Battery Test provides a reliable basis for decision-making regarding:
- Appraisal of used electric cars and plug-in hybrids.
- Sales and purchases.
- Lease returns and residual value assessment.
- Quality control in vehicle inventory.
After the completed test
After the test is completed, a documented result is generated that can be used internally or shared with the customer. The result contributes to increased transparency and strengthens trust in the transaction by clearly showing the battery’s current status.
For businesses working continuously with electrified vehicles, the battery test becomes a natural tool in the quality and sales process.
Next steps
If you would like to know more about how battery tests can be integrated into your business or how to prepare your organization, you are welcome to contact DEKRA for advice and support.