Safety evidence
HV systems need defensible evidence for protection functions, thermal management and fault response — under time pressure and audit scrutiny.
flagmeier.engineering
BMS & battery engineering from Tapfheim for the DACH region
Battery development, BMS integration and hardware testing from Tapfheim support automotive and industrial programmes across Bavaria and the DACH region.
From requirements analysis through prototyping and verification to series readiness — with hands-on expertise for STMicroelectronics, J1939 CAN bus and certification-relevant HV systems.
Why flagmeier.engineering
Why do battery programmes fail on safety, CAN bus and certification?
HV programmes rarely fail for lack of ideas — more often because of gaps between development, the test bench and release.
CAN bus integration
J1939, diagnostics and BMS interfaces must run reliably in the vehicle context — not only on the desk.
Certification hurdles
ECE R100, IEC 62619 and OEM specifications demand end-to-end traceability from requirement to test case.
Hands-on engineering instead of slide decks
Data sovereignty over test benches and measurement chains, efficient processes from requirements analysis to series readiness — backed by 10+ years in 48–800 V programmes.
The elevator pitch
10+ years of experience.
Developing, validating, and certifying high-voltage battery systems.
From 48 V to 800 V.
Automotive & Industry.
Core focus: end-to-end battery validation — from requirement capture and test planning through execution, automation, certification, and market access; bridging development, verification, and operations. Education: Bachelor of Engineering (renewable energy, Bielefeld UAS) with emphasis on automation of energy systems, power electronics, and electric drives; thesis in C# for automated programming of a pick-and-place unit (cut programming time from days to minutes). Prior apprenticeship as an electronics technician. Languages: German (native), English (fluent for business), Spanish (basic).
Process
How does a battery engineering project run?
A structured path from the first requirement to documented handover — remote and on-site across the DACH region.
- 01
Requirements analysis
Specifications, standards and interfaces are translated into a testable strategy and a realistic project plan.
- 02
Prototyping & testing
BMS hardware, CAN bus integration and test sequences are validated on the bench, HiL or on-site — with measurable evidence.
- 03
Series readiness & handover
Test reports, release documentation and knowledge transfer to your team — documented for reviews, audits and SOP.
Technologies
- BMS
- J1939
- STMicroelectronics
- AI-assisted development environments
01
Requirements analysis
Specifications, standards and interfaces are translated into a testable strategy and a realistic project plan.
02
Prototyping & testing
BMS hardware, CAN bus integration and test sequences are validated on the bench, HiL or on-site — with measurable evidence.
03
Series readiness & handover
Test reports, release documentation and knowledge transfer to your team — documented for reviews, audits and SOP.
Technologies
- BMS
- J1939
- STMicroelectronics
- AI-assisted development environments
Project example
What does a typical battery engineering project look like?
A concrete example from the DACH region — placeholder for detailed references.
Project location
Swabia / Bavaria (DACH)
- Challenge
- CAN bus integration and BMS validation under certification pressure — tight deadlines, missing test automation, inconsistent evidence.
- Outcome
- Series-ready test strategy, automated test sequences and documented release evidence for the OEM review.
References & Case Studies
Technical project outcomes with measurable impact
Test bench automation for HV batteries
Full automation of a battery test bench including climate chamber and BMS CAN communication. Test time reduced by 60%.
- -60% Test time
- +78% fault detection
- -EUR 18k license cost
Modular 48V swappable battery systems
Development of a scalable, swappable 48V battery architecture for emerging markets. From concept sizing to publication at SAE International.
- Swappable & stackable
- Passive/active cooling
- Published by SAE
Clients
Project experience with OEMs and partners
Including work on battery and high-voltage programmes for:
Volkswagen
Audi
Porsche
Daimler
BMW
Lamborghini
AVL
McLaren
Stellantis
Vinfast
FUSO
Ferrari
BFFT
VARTA
ElringKlinger
Hero
Munich Electrification
FAQ
What do OEMs ask before starting a project?
Short answers on service area, technology stack and how to get started — aligned with the structured data on this page.
Which region do on-site testing and consulting cover?
On-site testing and consulting start from Tapfheim in Bavaria. Typical coverage: Bavaria, southern Germany and the DACH region — plus remote work and international OEM programmes by agreement.
Do you support BMS development with STM32/STMicroelectronics?
Yes — from BMS architecture and firmware interfaces through hardware testing on STMicroelectronics platforms. This includes measurement chains, fault analysis and validation documentation for release.
How do we start a battery engineering project?
A short intro call clarifies requirements, timeline and interfaces. Then comes requirements analysis and a concrete proposal — via the contact form, email to [email protected] or calendar booking.