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Battery Cell Emulator

High-Precision Bidirectional Battery Cell Emulation Unit with up to 8 V and 5 A per Cell

The 2U rack-mountable battery cell emulator (BCE) enables 12 independent and isolated battery cells to be emulated in one single unit. The stackable design allows hundreds of cells to be simulated in order to reproduce battery packs and fully test battery management systems (BMS).

Each cell features an independent programmable power source with adjustable load to allow for simulation of battery charging and discharging behavior, as well as active and passive cell balancing. With the fast and accurate on-board signal converters, the BCE can achieve both very precise voltage and current outputs and measurements. Fast current sensing enables Coulomb counting for discharging and state of charge (SOC) estimations.

The fast and deterministic data transfer to any Speedgoat real-time target machine ensures that high sample rate performance and high-fidelity control can be achieved.

Key Features

  • High-precision cell emulation and measurement with +/- 0.5 mV accuracy
  • Current sink and source from -5A up to 5 A per cell
  • Adjustable load for cell balancing
  • Connecting of up to 12 cells either in series or parallel to achieve desired voltage or current ratings
  • Available in different voltage or current ratings for greater precision or even more cells in a system
  • Measuring charging and discharging current over time (Coulomb counting)
  • Cell-to-ground isolation up to 1.6 kV
  • Easy to configure with the Speedgoat I/O Blockset
  • Seamless integration with Simulink and Simscape™
Number of cells per unit 12
Number of cells in series 

Up to 312, depending on configuration

Cell-to-Cell isolation 96 V
Cell-to-Ground isolation 1.6 kV
Power requirements

DC Voltage Input: 48 V DC ± 5%

Current Input: max. 14.4 A

Power Input: max. 480W         

Communication interface EtherCAT
Update rate Up to 1 kHz
Cell Emulation Characteristics
Voltage range

Available in different voltage ranges:

0.01 – 5 V with 18-bit resolution

0.01 – 6 V with 18-bit resolution

0.01 – 8 V with 18-bit resolution 

Voltage accuracy ± 0.5 mV
Voltage ripple  6 mVpp
Current range sink/source Up to ± 5 A (current derating above 5 V) with 18-bit resolution
Current accuracy ± 2 mA
Cell power Max. 25 W
Connections Parallel connection to increase output current or serial connection to increase output voltage
Step response 0 V – 6 V ≤ 0.5 ms without load
Step response 6 V – 0 V < 0.5 ms full load
Cell Measurement Characteristics
Voltage range 0-10 V, with 18-bit resolution (approx. 40 µV)
Voltage accuracy ± 0.5 mV

Current range ± 5 A, with 18-bit resolution (approx. 40 µA)
Current accuracy < ± 2 mA
Filter response -3 dB cutoff frequency at 15 kHz
Battery cell enable (Interlock) Global enable for all cells
Embedded protections

Overvoltage, overcurrent and overtemperature protection

Short-circuit and polarity reversal protection

Dimensions 2U 19” subrack enclosure

2x RJ45 modular Jack for communication with real-time target machine

12x 4-pin Molex Mega-Fit for Cell Emulation

2x screw connectors for Power Input



Operating temperature 5 °C – 40 °C

Relative humidity

5 to 95%, non-condensing

Standard Compliance  
Compliances CE, CB, FCC, UK CA

EMC: IEC 61326-1

Safety: IEC 61010-1



Item ID Product Name Components
301001 BCE12-0505

12-channel battery cell emulator up to 5 V and 5 A per cell (2U 19” subrack)

301002 BCE12-0605

12-channel battery cell emulator up to 6 V and 5 A per cell (2U 19” subrack)

301003 BCE12-0805

12-channel battery cell emulator up to 8 V and 5 A per cell (2U 19” subrack)


Pricing information
We do not publish pricing information on our website. Upon request by e-mail or phone, we can provide a complete price list covering our entire product portfolio in various currencies. We recommend that you contact us to discuss your specific needs. We can then quickly provide you with a tailored quotation including technical and pricing information.


Included in the Delivery

  • 2U, 19” rack mountable BCE
  • Test models
  • Seamless Simulink integration
  • Comprehensive documentation
  • Cabling to real-time target machine

Common Applications

  • HIL testing for BMS
  • Simulation of electric and thermal battery behavior down to cell level
  • Programmable power supply source

Supported target machine

  • Performance
  • Mobile
  • Baseline
  • Unit

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