At MotorCheck, our mission has always been simple: to give dealers, consumers, finance providers, and warranty operators the trusted, accurate data they need to make confident decisions about used vehicles. When it comes to EV batteries—the most valuable component in any electric car—accuracy and independence matter more than ever.
What We Found in the Market
When we went to the market to evaluate EV battery health solutions, we took the time to understand the methodologies behind each provider.
What we discovered was that many solutions rely on a simple State of Health (SoH) readout from the vehicle’s Battery Management System (BMS).
These tests typically use low-cost tools to query the car’s onboard systems, extract the SoH value, and present it in a certificate.
While these certificates may look professional, they are ultimately repackaged versions of a single OEM-estimated number—a number that doesn’t always reflect the real, current condition of the battery.
Crucially, these tests cannot identify cell defects, imbalances, or early signs of failure that can leave a customer with disappointing range and costly repairs, even though the SoH figure appears strong.
Why That Wasn’t Enough
For us at MotorCheck, this approach did not meet the bar. Our customers depend on us for more than just data—they depend on us for trust, transparency, and vehicle provenance. A certificate that could mislead buyers into thinking a battery is healthier than it really is would put that trust at risk.
Why AVILOO Stood Out
AVILOO was different. As the global leader in independent EV battery diagnostics, they offered:
A scientifically validated methodology, with the FLASH Test calculating SoH from multiple predictors (mileage, energy counters, cell voltage spread, and more) rather than just echoing the BMS.
Built-in system checks—verifying sensors, communication signals, and calculation accuracy—to catch anomalies and ensure reliability.
A benchmarking system that compares results against the largest EV battery database in the world, giving context and meaning beyond a single percentage figure.
In short: AVILOO doesn’t just report a number. It provides an independent, comprehensive health assessment that our customers can trust.
The Analogy That Sums It Up
Think of it this way:
A simple BMS readout is like taking a patient’s temperature. If it looks normal, you assume all is well—but underlying issues could still be hiding.
The AVILOO FLASH Test is a full health check. It measures multiple indicators, cross-verifies the results, and compares them against thousands of similar cases. That way, you not only confirm the obvious—you also detect the hidden issues before they become a problem.
By choosing AVILOO, MotorCheck ensures that every EV battery certificate we deliver meets the same standard we apply to every service we provide: accuracy, trust, and transparency.
It was clear to us that only AVILOO could deliver the rigour, independence, and credibility that our customers expect when making the all-important decision to buy, fund, or underwrite a used EV.