We test the high-voltage battery, analyse the data your car makes available and explain what the result actually means.
AMR EV is the electric-vehicle division of AMR PRO.
Compatibility and available parameters differ from vehicle to vehicle.
Beyond the charge percentage there is data on voltages, temperatures, faults and how the battery behaves.
01 · The signal
The percentage on the dashboard shows the energy available at that moment. The state of health of the battery is a different assessment, and it depends on the information the vehicle provides and on the testing method used.
The energy available in the battery at the time of the check.
An indicator of the battery's condition relative to its reference values, according to the data and the method available.
A static test, a dynamic test and an in-depth test do not measure exactly the same thing.
Depending on the vehicle, we can analyse the information available from the BMS, the high-voltage systems and the behaviour of the battery.
Parameters reported by the battery management system.
Values and differences available between cells or cell groups.
Temperatures reported by the available sensors.
Active and stored codes relevant to the high-voltage system.
Available as part of the compatible dynamic test.
Digitally generated conceptual visualisation. Real parameters come from the vehicle and the diagnostic equipment.
The right answer is not just a number. It is the relationship between all the data available.
A stationary reading of the data available from the vehicle and the BMS. Suited to quick checks, pre-purchase or pre-sale assessments and documenting the condition of the battery.
CARA Approved The only test on this list with a CARA Approved report, for compatible vehicles.
450 lei371.90 lei + VAT · 21% VAT included
approx. 15–20 min
We monitor how the battery behaves under controlled driving conditions, to observe parameters and differences that can only become visible under load.
Requires safe conditions and a suitable route.
650 lei537.19 lei + VAT · 21% VAT included
approx. 45–60 min
An extended procedure for compatible vehicles, with specific preparation and monitoring over a longer period.
Availability is confirmed before booking.
1,250 lei1,033.06 lei + VAT · 21% VAT included
approx. 2–3 hours, or as the vehicle procedure requires
Not every method is available for every model. We check compatibility before we agree on the test.
For compatible vehicles, the SOH Blitz test generates a digital report carrying the Battery Health Check CARA Approved® mark, issued through the approved testing solution. The result is not a workshop opinion: it is a document issued through the approved testing solution.
The CARA Approved report is issued only through the SOH Blitz test. The dynamic test and the SOH Deep Test are additional technical analyses, without CARA certification. Availability is confirmed before testing, depending on the vehicle.
We have been testing high-voltage batteries since January 2026. Every row below comes from an SOH Blitz report issued by AMR EV for a car that actually went through the workshop: make, model, odometer at the time of the test, the SOH read from the BMS and the date. This is what real batteries look like at real mileage — not in a brochure.
SOH Blitz reports issued by AMR EV, January–August 2026
are listed in the table below, with the SOH percentage taken from the report
average SOH across those 100 vehicles (%)
different makes, from compact PHEVs to Porsche and Tesla
million km accumulated by the tested cars
Seven of the 100 vehicles recorded below 80% SOH. The 80% threshold is commonly used as a reference point in manufacturer traction-battery warranties. Lowest value in the list: 54%.
The SOH value is the one reported by the car’s own battery at the time of the check, not a workshop estimate. Mileage, temperature and state of charge at that moment all affect how the result should be read.
People call and ask: “fine, but what do I actually get?” Below is a real report we issued for an Audi e-tron at 145,700 km. The data is exactly as it appears in the document. The SOH percentage is only the first line.
Test conclusionThe battery pack is OK.
Result: the temperatures of all battery modules are within range.
| Module | Module voltage | T1 | T2 |
|---|---|---|---|
| M1 | 12.355 V | 14,0 °C | 14,0 °C |
| M2 | 12.355 V | 14,0 °C | 14,0 °C |
| M3 | 12.354 V | 14,0 °C | 14,0 °C |
| M4 | 12.353 V | 14,0 °C | 14,0 °C |
| M5 | 12.353 V | 14,0 °C | 14,0 °C |
| M6 | 12.353 V | 14,0 °C | 14,0 °C |
| M7 | 12.354 V | 14,0 °C | 14,0 °C |
| M8 | 12.355 V | 14,0 °C | 14,0 °C |
| M9 | 12.355 V | 14,0 °C | 14,0 °C |
| M10 | 12.352 V | 14,0 °C | 14,0 °C |
| M11 | 12.355 V | 14,0 °C | 14,0 °C |
| M12 | 12.356 V | 14,0 °C | 14,0 °C |
| M13 | 12.357 V | 14,0 °C | 14,0 °C |
| M14 | 12.354 V | 14,0 °C | 14,0 °C |
| M15 | 12.357 V | 15,0 °C | 14,0 °C |
| M16 | 12.357 V | 15,0 °C | 15,0 °C |
| M17 | 12.355 V | 14,0 °C | 14,0 °C |
| M18 | 12.354 V | 14,0 °C | 14,0 °C |
| M19 | 12.353 V | 14,0 °C | 14,0 °C |
| M20 | 12.354 V | 15,0 °C | 15,0 °C |
| M21 | 12.355 V | 15,0 °C | 15,0 °C |
| M22 | 12.352 V | 14,0 °C | 14,0 °C |
| M23 | 12.354 V | 15,0 °C | 15,0 °C |
| M24 | 12.356 V | 14,0 °C | 15,0 °C |
| M25 | 12.353 V | 14,0 °C | 14,0 °C |
| M26 | 12.351 V | 14,0 °C | 14,0 °C |
| M27 | 12.353 V | 15,0 °C | 15,0 °C |
| M28 | 12.354 V | 14,0 °C | 15,0 °C |
| M29 | 12.353 V | 14,0 °C | 14,0 °C |
| M30 | 12.353 V | 14,0 °C | 14,0 °C |
| M31 | 12.358 V | 15,0 °C | 15,0 °C |
| M32 | 12.360 V | 14,0 °C | 14,0 °C |
| M33 | 12.357 V | 14,0 °C | 14,0 °C |
| M34 | 12.356 V | 14,0 °C | 14,0 °C |
| M35 | 12.355 V | 15,0 °C | 15,0 °C |
| M36 | 12.356 V | 14,0 °C | 14,0 °C |
Result: the cell voltages of all modules are within range. Values in volts, three cells per module.
You receive the report digitally, the same day. You can forward it to a buyer, a dealer or another workshop.
The value reported by the BMS through the testing solution. The only figure a “percentage only” test gives you. Here: 91% at 145,700 km.
The spread between the highest and lowest cell in the pack: 4 mV. This is where a weak cell or module hides, long before a dashboard warning appears. A few millivolts means a balanced pack; a few dozen means we look further.
Not an average — all 108 values, module by module, exactly as the battery reports them.
36 modules, two sensors each, plus the spread between the hottest and coldest point. A wide spread points to cooling trouble or a module working harder than the rest.
Codes from the battery modules and the high-voltage systems, with an explanation of the context in which they appear.
The part that isn’t printed: we tell you what the numbers mean for your car, and whether a further check is justified or not.
SOH percentage
✓✓SOC and pack voltage at the time of the test
—✓Voltage of every cell or module
—✓Cell voltage delta
—✓Temperature of every sensor
—✓Thermal delta across the pack
—✓Active and stored high-voltage fault codes
—✓Vehicle identification, VIN and mileage in the document
—✓CARA Approved® mark for compatible vehicles
—✓Battery behaviour under load
—✓ dynamic testAn explanation of the result, from a human
—✓A recommendation for the next step
—✓Available parameters depend on the vehicle: not every car exposes individual cell voltages or every temperature sensor. We confirm what can be read before booking. The left column describes a test that reports the SOH percentage only — not any specific provider.
The method available depends on make, model, year, battery type, charge level and existing software support.
The battery health value as provided or interpreted through the testing equipment, where the vehicle makes it available.
The charge level at the time of testing and the total voltage read at high-voltage pack level.
Individual values reported by the BMS for cells or cell groups, where accessible.
The deviation between the highest and the lowest reported value — an indication of pack balancing.
Temperature sensor values reported by the system during the check.
Active and stored codes from the modules linked to the traction battery and the high-voltage systems.
Parameters on power, limits and behaviour during charging or discharging, where the vehicle exposes them.
How voltages and temperatures evolve while driving, as part of the compatible dynamic test.
Estimated or corrected range values reported by the vehicle, as supplementary information rather than a measurement.
We check whether the parameters read are coherent with each other and whether they point to something worth investigating further.
The exact list depends on make, model, year, battery type, software version and the access permitted by the vehicle's systems. Not all vehicles allow the same type of report or access to the same parameters.
You get the context you need for the next step.
The structure and parameters of the report differ depending on the vehicle and the compatible method.
The dashboard shows how much energy you have now.
The test shows what information the battery can provide.
The interpretation shows what is worth doing next.
You check the battery before making an important financial decision.
You can show the buyer documented information about the condition of the battery.
You separate possible battery degradation from the influence of temperature, driving style or conditions.
We check the systems and the available data before an expensive intervention is recommended.
Fleets and owners can track battery evolution through tests carried out under comparable conditions.
We confirm which method and which parameters are accessible on your car before booking.
We read the modules linked to the traction battery and the related high-voltage systems.
The parameters the vehicle and the equipment make available for the test performed.
Active and stored codes, with an explanation of the context in which they appear.
A document with the test data that you can keep or present to a buyer.
A digital report carrying the CARA Approved® Battery Health Check mark, issued through the approved testing solution. Available only through the SOH Blitz test, for compatible vehicles.
We explain what the data shows and what it cannot show, without forced conclusions.
We say clearly whether further checks are needed or whether the data does not justify an intervention.
We don't replace a battery before we test it.
We do not recommend replacing a battery before testing and technically confirming the problem.
Testing does not automatically constitute a guarantee of the battery's future service life.
450 lei371.90 lei + VAT · 21% VAT included
Static · approx. 15–20 min
For a fast check of the data available from the vehicle and the BMS.
Available parameters depend on the vehicle.
650 lei537.19 lei + VAT · 21% VAT included
On the road · approx. 45–60 min
To observe how the battery behaves under load, in controlled conditions.
Requires safe conditions and a suitable test route.
1,250 lei1,033.06 lei + VAT · 21% VAT included
In-depth · approx. 2–3 hours
For extended analysis of compatible vehicles, with specific preparation.
Available only for compatible vehicles and testing conditions. May require a defined charge level and access to charging infrastructure.
350 lei289.26 lei + VAT · 21% VAT included
Complementary services · duration depends on the vehicle
200 lei165.29 lei + VAT · 21% VAT included
Auxiliary battery · separate from the HV battery
The final price and the testing method are confirmed after the vehicle compatibility check. Travel costs, where needed, are confirmed separately depending on location and booking. Prices shown include VAT. We issue a fiscal invoice.
For fleets and dealers: a tailored quote based on the number of vehicles, location and testing method.
Make, model, year, powertrain and VIN help us check compatibility.
We choose the right test based on the vehicle and the reason for the check.
We connect the equipment, collect the available data and carry out the compatible procedure.
You get the digital report and an explanation of the result.
The duration of each stage is confirmed according to the vehicle and the method chosen.
For dealers, car parks, leasing companies and fleets, we organise testing across several vehicles and deliver an individual report for each car.
A tailored quote based on the number of vehicles, location and testing method.
AMR EV is the platform dedicated to battery verification and diagnostic services for electric and plug-in hybrid vehicles.
The project is developed through AMR EV and backed by the experience, infrastructure and customer relationships of AMR PRO.
Workshop in Pantelimon, Ilfov, by prior appointment.
Tests are scheduled in advance, after the compatibility check.
Every compatible test ends with a digital report and an explanation of it.
We work across several brands, within the limits of the available software support.
Services for individual owners, dealers, leasing companies and fleets.
Send us the car details. We check compatibility, recommend the right method and confirm your booking.
Submitting the form does not automatically confirm a booking. Compatibility, method, price and availability are confirmed before the test.
For certain tests we can come to you in Bucharest and Ilfov, for an additional fee confirmed based on your location and the testing method.
