• Safion GmbH

    Research & Development Solutions for battery modeling

How to derive lean models

Identification of cell parameters

Every battery-powered application has specific requirements for its energy source. System integrators face the challenge of defining exact characteristics and performance limits in order to identify the right battery cells on the market and design their battery system accordingly.

This is where our solutions for the research and development sector come in, enabling you to derive an electrical and thermal model of your battery in a simple and fast way and thus accelerate your further development steps.

Safion GmbH Safion GmbH
A straightaway solution

Faster than ever

Model batteries

The Inspectrum performs EIS measurements at unprecedented speed during your battery cell and battery system development. A specially developed toolchain in our software enables parameterization of your batteries in the shortest possible time. Optimized for industrial use, the system represents a lean but extremely powerful solution that is easy to set up and operate without special qualifications.

Inspectrum offers a particularly cost-efficient alternative to conventional EIS measurement systems, which is at the same time more precise and more robust and which leads you - literally at the push of a button - directly to your individual results. In combination with our multiplexer you have up to 8 measuring channels. This significantly reduces the measurement effort and minimizes the typical error rate during cell contacting.

Safion GmbH

Measuring unit

  • Simultaneous measurement of up to 32 impedance points
  • Automatic calculation and validation of the impedance spectrum
  • Highly efficient switched-mode design: no active cooling, no heat sink, no maintenance
  • CAN Bus & USB Interface
  • AC output current: 10 A (p-p)
  • Frequency range: 10 mHz to 10 kHz
  • Output voltage: 0 - 5 V
  • Superimposed DC output current: +/- 1 A
Safion GmbH


  • 8 simultaneously connected EIS measurement channels
  • Sequential measurement with channel switch within 0.5 seconds
  • Plug-and-play integration with Inspectrum.C
  • Small footprint and maintenance-free design
Online EIS

Capture performance & safety

Online EIS for development

Conventional electrochemical impedance spectroscopy (EIS) methods are too slow to be usefully employed in industrial applications. Safion's online EIS method, on the other hand, uses superimposed excitation to measure up to 32 impedance points simultaneously. In this way, the measurement time is reduced from minutes to seconds. This allows, for the first time, to perform EIS measurements under dynamic operating conditions, such as superimposed charging and discharging currents, as well as under abuse conditions.

The performance and safety limits of lithium-ion batteries can thus be measured with unprecedented accuracy, providing our customers with trend-setting insights for material, cell design and battery system development.

second measurement time
simultaneous impedance measurements
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measured cells