BMW battery testing: an independent SOH certificate
We test 44 versions of BMW, spread across 34 model groups. Within three minutes, you will know what the battery pack is still worth.

WHAT COMES OUT OF THE BATTERY PACK
What we read out from BMWs
Over half of the BMW models on our list are plug-in hybrids. Those battery packs are small and are charged and discharged fully on a daily basis, causing them to age differently than a fully electric battery. This is precisely where two cars from the same year of manufacture can differ greatly.
The SOH percentage: the actual capacity compared to the factory value
The cell balance: the voltage difference between the weakest and the strongest cell
The charging history: how often it has been fast-charged and how deeply it has been discharged
The warranty status of the battery pack
A comparison with similar cars of the same year of manufacture
Everything comes directly from the battery management system via the OBD port. No estimation based on age or mileage. Within three minutes, the CARA-certified certificate is ready, as a PDF and as a JPEG.
Which BMWs we can test
The widest selection on our list: from the i3 to the newest i-models and a long line of plug-in hybrids. In total, there are 44 BMW variants in our list, divided across 34 model groups, including the i3, i4, and 225xe Plug-in MY16-23.
In a plug-in hybrid, the battery is small compared to its usage. The pack goes from completely full to completely empty more often than in a fully electric car, and that adds up. Two BMWs of the same year of manufacture with the same mileage can therefore differ significantly. You can't see that from the outside, nor from the odometer.
The measurement is done via the OBD port. You receive the SOH percentage, the cell balance, the warranty status, the charging history, and a comparison with similar cars, summarized in a CARA-certified certificate as a PDF and a JPEG.
Model groups that we read
i3 — 3 versions
i4 — 3 versions
225xe Plug-in MY16-23 — 2 versions
330e Plug-in MY16-24 — 2 versions
530e Plug-in MY16-22 — 2 versions
C-evolution — 2 versions
i5 — 2 versions
iX — 2 versions
225xe Plug-in MY24+ — 1 version
230e Plug-in MY22+ — 1 version
320e Plug-in — 1 version
330e Plug-in MY25+ — 1 version
and 22 other model groups, together representing 22 versions
Is your version not listed? Send us the chassis number, and we will see if we can add it.
Have your BMW tested?
With us in Blaricum or at an affiliated partner near you. Within three minutes, you will know the condition of the battery pack, with a certificate that you can immediately add to the advertisement.