Press
Material and figures for your reporting
Battery health certificates for used electric cars, calculated from the charging history instead of a single measurement.
Press contact
Georg Wächter, founder
info@akku-brief.de+49 30 23258161
Reply within 24 hours on working days. On deadline, reach me by phone.
Dataset
- 627,600
- data points
- 55
- connected vehicles
- 1,700
- measurement runs analysed
Totals across all connected vehicles, rounded down. A measurement run is one uninterrupted charge or drive, and we calculate capacity from it. As at 28 October 2026.
Figures for your story.Tell us your question and your deadline. We will run it against the anonymised fleet data and send the figures along with a note on how they came about: info@akku-brief.de
Topics
What we can speak to
Even without a current release: on these topics we provide context, figures and quotes.
- What the health figure measures.Why a number without measurement conditions says little, and how to spot a figure that holds up.
- The car's own display versus the history.What the car's own display shows, what it leaves out, and what only becomes visible across many charges.
- The Data Act in practice.Which vehicle data owners have been able to request since September 2025, and how manufacturers handle it.
- Residual value in the used market.What battery condition does to resale prices, and how valuation houses have treated it so far.
- Battery warranties.What manufacturers actually promise, where the limit sits, and how to evidence a warranty claim.
- Our validation study.Design, pre-registration, and what we deliberately publish before we know the first result.
Latest
Releases
The first one comes with the results of the validation study.
Evidence
Studies and evidence
Every claim we make sits next to a source you can check.
Media kit
Logos, sample certificate, portrait, short profiles in three lengths, and the figures to quote.
Open the media kit
