Five-cell performance data
i-V curve and cell-to-cell voltage
Is this the right product?
Do the data available today match your project's targets and conditions?
The five-cell short stack is available now, and the 46-cell, 30 kW full stack will be available in Q4 2026. Review measured data and design values separately for each configuration.
Choose this product when
- Integrating a 30 kW-class stack into an industrial demonstration or hydrogen production plant
- System integrators able to design their own BoP, power, control and safety systems
- Projects evaluating modular scale-up from the 15 kg H₂/day design capacity per unit
Product and supply boundary
Measured values and design targets remain clearly separate
Development partners need a clear separation between current evidence and future supply targets to assess risk and schedule.
Short-stack engagement
Supply and technical review for development work
46 cells · 30 kW
Full stack available Q4 2026
Included supply scope
- 46-cell HXS-30 full-stack design with power, electrolyte and gas connection specifications (available Q4 2026)
- Available 5-cell short-stack performance and durability data with recommended operating conditions
- Exterior/enclosure-only STEP model on request (internal parts and flow fields excluded)
Customer preparation
- A DC power supply sized for the rated operating range (80 V · 360 A design basis)
- Electrolyte circulation and temperature control matched to the product connection specification
- Gas-liquid separation and drying or purification equipment for the required purity
- Pressure and safety systems designed for up to 10 barg on the H₂ side with the anode at atmospheric pressure
Validation evidence
Measured data and test conditions
Measured results, catalogue data and design targets remain clearly separated. Full charts retain their test conditions.
Cell voltage was measured across current density on a five-cell short stack.
The voltage distribution across five cells is compared at 360 A.
Open full charts and test conditions2 datasets
MEASURED
Measured i-V curve · five-cell short stack
Cell voltage was measured across current density on a five-cell short stack.
MEASURED
Cell-to-cell voltage · 360 A (15 mV spread; the highest is a middle cell)
The voltage distribution across five cells is compared at 360 A.
Technical details
Full specifications and supply terms
Full specifications, support terms and review documents remain available without interrupting the first product decision.
Complete product specifications17 items
| H₂ production | 7,500 L/h (15 kg/day · design) |
|---|---|
| Outlet pressure | Up to 10 barg on the H₂ side |
| Efficiency (HHV) | 46-cell, 30 kW full-stack design 84% · approx. 47 kWh/kg-H₂ / measured five-cell short stack 90.7% · approx. 43 kWh/kg-H₂ |
| Recommended operating condition | 0.1 M KOH · 50 °C (adjustable) |
| DC input | 80 V · 360 A (28.8 kW) |
| Water consumption | 6.5 L/h (at rated 360 A; from a 6.3 L/h design figure at 350 A) |
| Five-cell continuous run | 585 h · 330 A · 60 °C · electrolyte flow 4 L/min (as of 27 July 2026) |
| Number of cells | 46 |
| Electrode area · reference active area | Anode electrode area 600 cm² · reference active area approx. 521 cm² |
| Electrodes | HXP-an · HXP-ca |
| Dimensions | 570 × 400 × 330 mm |
| Weight | 120 kg |
| Structure | Anode-side electrolyte circulation |
| Instrument calibration | Flow and gas analysers calibrated under KOLAS |
| End plate | SUS316L |
| Bipolar plate | Nickel-based metallic plate |
| Material change | Yes · we confirm the operating window and validation scope together |
Support, lead time and commercial terms2 items
Service & reassembly
Disassembly and reassembly require our dedicated gaskets and a hydraulic press to a 5 tonne gauge reading, so conditions are agreed with us in advance. Return service can replace only the MEA and reuse the hardware; the service scope and terms are fixed in the quotation.
Development status & lead time
5-cell and 15-cell short stacks available now · 46-cell, 30 kW full stack available Q4 2026