We use cookies on our website.
Some of them are necessary for the functioning of the site, but you can decide about others.
MegaEIS™
ME-2ZL400
True Zero-Voltage Load & EIS Workstation
The MegaEIS™ ME-2ZL400 is a specialized 2-channel load and EIS workstation, engineered specifically for advanced large-format single-cell and small fuel cell stack testing.
Featuring a true zero-voltage load architecture, it is capable of sinking up to 400 A natively even as cell potentials approach 0 V. With two fully synchronized measuring channels, the system allows researchers to execute heavy load profiling, short-circuit simulations, and high-resolution EIS at the extreme lower limits of fuel cell operation without the voltage dropouts common in standard electronic loads.
Kolibrik MegaEIS System Introduciton
See Unboxing, introduction to features, and practical live measurement demonstration of MegaEIS System.
Key Features
- True zero-voltage load architecture: Sink maximum continuous current even at ultra-low cell potentials (down to 0 V) for short-circuit and deep discharge testing.
- Designed for advanced large-format single-cell and 2-cell fuel cell research.
- Maximum load current up to 400 A
- Stack voltage up to 75 V
- 2× dedicated measuring channels for fully synchronized, parallel EIS data acquisition.
- High-precision current sensing: Artifact-free measurement of both DC and AC components under extreme low-voltage conditions.
Deployment Scenarios
-
Deep Discharge & Short-Circuit Testing: Evaluate fuel cell behavior down to absolute 0 V. The true zero-voltage load architecture pulls up to 400 A even at ultra-low potentials, allowing for safe, controlled short-circuit simulation and deep discharge recovery analysis on massive active areas.
-
High-Current Single-Cell Characterization: Push large-format cells to their operational limits. Execute precise polarization curves and continuous heavy load profiling up to 400 A without being restricted by the minimum operating voltages that limit standard laboratory loads.
-
Ultra-Low Voltage EIS Diagnostics: Capture specific impedance shifts at the brink of cell failure. Perform high-resolution parallel EIS on both channels while operating near 0 V, instantly pinpointing severe mass transport limitations or cathode flooding under extreme stress conditions.
Technical Parameters
| Power supply | 110 … 240 V AC / 50 … 60 Hz |
| Dimensions | Modular deign for 19“ rack cabinet |
| Protection rating | IP20 |
| Input voltage for Load mode | 0 … 75 V |
| Total input current Total input current (internal + external load) |
Up to 400 A |
| Internal load current | 0 … 400 A |
| Max. internal power dissipation | 4 kW |
| Cooling | Water |
| Sampling | 24-bit ADCs, low-noise 50/60 Hz filtered sampling
Up to 1.25 Msps for EIS measurements |
| Measurement resolution | 0.001% of selected range |
| Accuracy | Voltage: ≤ 0.1% of range + 0.1% of reading
Current: ≤ 0.1% of range + 0.5% of reading |
| Acquitions methods | Constant V, I, Open circuit, Manual control, Chronoamperometry, Chronopotentiometry, Linear sweeps, Polarization curves, Current interruption, Load cycling/profiling, EIS – electrochemical impedance spectroscopy, Programmable sequences of all available methods |
| EIS frequency | 1 mHz … 100 kHz |
| EIS amplitude in PTC mode | 1 … 1000 mV, up to 50 A for < 1 kHz |
| EIS amplitude in Source mode | Up to 20% of maximum internal current for < 1 kHz |
| EIS channels | 2 |
| EIS Probes | -2 V … +10 V |
| Connection | USB 2.0 |
| Software | Control software for MS Windows
Features: measurement setup and control, data acquisition, processing and visualization, pascal or python scripting, remote control by TCP/IP server for integration with top-level control system, examples for remote control using Python or LabVIEW. |
If these variants do not suit you, please contact us, we offer customized solutions!
Documentation
Software
To run your experiments, you’ll use the application CVM Manager – our measurement and control app that manages everything from workstation setup to real-time data acquisition and visualization. Just connect the MegaEIS System, choose your method, and let the science begin.
High-Power Fuel Cell & Electrolyzer Testing
Want to learn more about the solution, use cases, and references related to fuel-cell or electrolyzer testing? In our portfolio we have a solution for all scenarios including SOFC, etc.
High-Power Battery & Packs Testing
Want to learn more about the solution, use cases, and references related to battery-oriented testing? In our portfolio we have a solution for any type of batteries including redox-flow, etc.