Testing information
The method, the data and the boundaries.
A read-only battery diagnostic with a written report delivered at the vehicle during the appointment. Battery electric vehicles are tested with the CARA Approved AVILOO FLASH test; hybrid and plug-in hybrid packs are assessed with a professional hybrid battery diagnostic.
Scope
This is a battery assessment, not a full pre-purchase or roadworthy inspection.
The method, stated plainly
For battery electric vehicles, the AVILOO FLASH test reads and analyses the pack's own battery-management data down to cell level — a completely different and far more detailed thing than the range estimate or charge percentage on the dashboard. It is not a discharge test and not a stress test, and the result is not independent of the vehicle's own reporting: it is a certified analysis of that data, checked against the pack's factory specification and delivered as a written, independently verifiable certificate. The FLASH method is CARA Approved by CARA Europe — verify it on the public list.
State of Health, explained
State of Health (SOH) expresses remaining capacity as a percentage of original factory capacity, read from the battery management system's own data. The report also shows usable energy, cell voltage spread and pack temperature behaviour so the condition is not reduced to one number.
Service boundaries
- No battery dismantling, cell replacement or repair work.
- No general mechanical, structural or roadworthy inspection.
- The report includes the battery and high-voltage fault scan, not every system in the vehicle.
- The five-year projection models SOH from the tested data; it is not a mechanical warranty.
Measurements differ by vehicle
Every electric, plug-in hybrid and hybrid vehicle can be booked, including models that are not listed in our online dropdowns. What the assessment can read depends on the vehicle's own diagnostic protocol, and we explain that for your vehicle at the appointment.
We test every electric, plug-in hybrid and hybrid vehicle. Which measurements appear in your report depends on the vehicle’s diagnostic protocol, and we confirm those with you at the appointment.
The five-year outlook calculator
The public calculator demonstrates the shape of a projection using assumptions you choose; it does not test a battery. The paid report models five years from the vehicle's tested State of Health and charge-discharge behaviour, including projected distance to 70%.