BaSiS Battery Simulation Studio

The digital twin of your battery


Use BaSiS – Battery Simulation Studio – to simulate all relevant physical and electrochemical processes of your energy storage systems.

Monitor states – accelerate development – optimize operation.

Different types of battery systems


A suitable simulation model

BaSiS offers a suitable battery simulation for your system and your challenges. The BaSiS models offered take the special properties and functional principles of different battery systems into account.

Find the solution here that suits you best:


Lithium-ion batteries


Lead-acid batteries




Fuel cells/Electrolyzers


Metallic batteries

Add-on modules

  • MATLAB® / SIMULINK® interface

  • Python interface

  • Functional Mock-up Interface (FMI)

  • Real-time module for HIL systems

  • Parameter database for common battery storage systems

  • Individual emulator control

  • Calendaric and cyclic aging

  • HIL interfaces: EtherCAT, CAN, RS232, Ethernet

BaSiS Battery Simulation Studio

Precise battery simulations

Battery Simulation Studio

BaSiS Betteriesimulation

Use the comprehensive BaSiS solution for your individual user-oriented battery simulation.

BaSiS is a fast, real-time capable and precise simulation environment for electrochemical storage systems. It shows all dynamic processes and aging effects and supports our customers in making the operation of their storage systems more reliable, robust, durable, and efficient.

As an all-in-one solution, BaSiS provides the necessary software environment and the parameter sets for the simulation of battery systems as well as their internal and external interactions.

Battery simulations by BaSiS can be used directly in your development and test environment, enabling you to improve and accelerate your development cycles while optimizing costs.

BaSiS has been successfully used for years in the development, testing, and optimization of cells, batteries, packs, components and management systems in the field of mobile devices as well as in automotive, plant, and aerospace engineering, including in the simulation of traction batteries.


  • Adjustable accuracy and computing speed across the entire operating range

  • All-in-one solution – consisting of software and the associated parameter set

  • Simulation of all operating states, aging effects, and short-term dynamic processes

  • Prediction of terminal behavior

  • Real-time capability: used in hardware-in-the loop test benches

  • Detailed insights into the battery’s internal processes

  • Testing of state detection algorithms for control and monitoring systems, e.g. battery management systems

  • Assessments ranging from cells to systems in development and construction

  • Complete individual parameterization of cells based on a datasheet and three individual cells

  • Availability of all cell parameters

  • Available on all common operating systems

Successful in practical application

Applications of battery simulators

BaSiS has been successfully used in (inter)national industrial applications for more than 25 years and proves its worth in the sustainable development of robust battery systems on a daily basis.

Battery simulators are used in various areas, such as in the automotive industry, medical engineering, various battery systems in general, as well as sector-specific test benches.

Automotive industry

Battery systems

Medical engineering

Test benches

Your Advantage

Optimized product lifecycle

The comprehensive services offered by BaSiS allow you to optimize the development of your battery system throughout the entire product lifecycle.

  • Design | Development: Faster and more cost-effective development of your battery systems


  • Testing | Quality assurance: Use of the battery simulation for test systems


  • Operation | Service: Advance modeling and testing for more reliability in operation


  • Recycling | Lifetime: Information about the end of the product lifecycle of your battery even before it is reached


The way to your battery simulation

Three simple steps

Once you have received your individual parameter set and BaSiS, you have all important data and practical tools to obtain meaningful and comprehensive simulation results for your battery.

Do not hesitate to consult our experts for battery simulation and battery emulation!

The Battery Simulation Studio saves you time-consuming measurement series, accelerating development processes of batteries and battery systems.

Our Services

Additional Services

Advice and parameter determination

More than 15 years of expertise enables us to provide you with comprehensive advice concerning the various modeling approaches, areas of application, and the associated parameterization for your specific application.

  • Determination of aging and performance data sets

  • Characterization in the frequency and time domain

  • Long-term studies on battery aging

  • Specific adaptation to the customer’s battery

Software adaptation

We offer you individual software adaptations to our model to integrate our battery models into your specific simulation or test environment.

  • System integration into development and hardware-in-the-loop environments

  • Interface enhancements and database adaptations

  • Adaptations to visualization and user guidance

Quantification of aging processes

  • Solid electrolyte interphase (SEI) growth

  • Electrolyte oxidation

  • Gas evolution

  • Loss of active electrode material

  • Mapping of many years within hours

  • Lithium plating

Seminars and workshops

You would like to offer your team qualified advanced training in the simulation and emulation of batteries and their use in real practical applications? Get in touch with us and we will customize the seminar to your desired subject areas, your team’s previous knowledge and your goals.

  • Contract simulations

  • Workshops, training material

  • Cooperation and licensing models

  • Partner program

Background knowledge

This is how battery simulation works

What is battery simulation?

Battery simulation is used to model a battery’s electrical behavior in a virtual environment. This makes it possible to study the battery performance without requiring a real battery. The simulation allows for predicting a battery’s behavior under different conditions, contributing to improving the battery’s design and extending its life.

How is the optimum battery simulation developed?

To enable optimum modeling of a system in the battery simulation, the appropriate modeling approach and the acceptable model simplifications need to be selected. In this process, optimum alignment to the requirements of the specific objective and the respective system is crucial. In addition, cost-benefit considerations may also play a role.

After choosing the appropriate approach, the challenges in developing the optimum battery simulator are model development, testing, implementation and parameterization.

What does a battery simulation model comprise?

  • Equations or systems of equations
  • Input parameters (e.g. current and ambient temperature) and output parameters (e.g. voltage) that are calculated based on the underlying equations and the current state of the battery (e.g. SOC)
  • Parameters that differ for the specific batteries – parameters can be provided in the form of characteristics to update them during the battery simulation, for example according to temperature, or the physical processes are depicted

In the white-box approach, the physical or electrochemical processes in a battery are simulated using partial differential equations, with each model parameter having a physical meaning. This makes it possible to gain insights into the systems of the battery that would not be possible without a simulation model.

The development of such a model requires a profound understanding of the energy storage system.

The BaSiS models have been developed based on the white-box approach.

  • describes the non-linear battery behavior across the entire operating range
  • typically more computationally intensive than other approaches

In the gray-box battery simulation approach, which is typically implemented in the form of an equivalent electrical circuit diagram, only some of the model parameters have a physical meaning.

  • high computing speed
  • does not allow any insights into the battery system
  • only describes the strongly non-linear battery behavior at a certain operating point rather than across the battery’s entire operating range (SOH, SOC, current, temperature)

In the black-box approach, the battery simulation requires virtually no information about the system to be modeled. Instead, relatively comprehensive and time-consuming measurements in the laboratory are required for parameterization to obtain good simulation results.

These models are currently used relatively rarely in battery simulation.

  • high computing speed
  • does not allow any insights into the system, preventing a more in-depth understanding of the battery

From research for practice.
Discover the current research behind
BaSiS Battery Simulation Studio.

BaSiS Battery Simulation Studio


Dipl.-Ing. Philipp Brosche

Hardware-in-the-Loop Systems

  • + 49 561 7294-293


  • Fraunhofer IEE
    Joseph-Beuys-Straße 8
    34117 Kassel

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