Utility · eFlex Series · Utility-scale Liquid-Cooled ESS · LFP
SU836E418KM
The eFlex 836 kWh liquid-cooled ESS — 836 kWh of LFP and 418 kW in a compact cabinet, with 6–8 units in parallel for scalable grid-scale storage.
- 836
- kWh nameplate capacity
- 418 kW
- Nominal AC power
- ≥94%
- Round-trip efficiency
- 6–8
- Units in parallel
Why this product
- Compact liquid-cooled cabinet — 98.4 kWh/m³ energy density and ≥94% round-trip efficiency
- Scales from 6 to 8 units in parallel with adjustable rack configuration
- Safe LFP chemistry — 314 Ah cells in a 416S2P configuration at 1331.2 V
- UL/IEC certified with Zone 4 seismic design for global safety standards
- Wide operating envelope: −30°C to +55°C, IP55, C4-M corrosion resistance, full performance to 4,000 m
- Multi-layer fire safety: dry pipe, gas detection and ventilation, aerosol and alarm system
- EMS interface with remote monitoring and full-cycle maintenance
System
- Nominal AC power
- 418 kW
- Nameplate capacity
- 836 kWh
- Round-trip efficiency
- ≥ 94%
- Energy density
- 98.4 kWh/m³
- Cooling
- Intelligent liquid cooling
- Auxiliary power supply
- AC 400 V / 3P4L 50 Hz
Battery
- Chemistry
- LFP (lithium iron phosphate)
- Cell capacity
- 314 Ah
- Configuration
- 416S2P
- Nominal voltage
- 1,331.2 V
- Voltage range
- 1,123.2 – 1,497.6 V
Environment & protection
- Degree of protection
- IP55
- Operating temperature
- −30°C ~ +55°C
- Relative humidity
- 0 – 95%
- Max working altitude
- 4,000 m
- Corrosion resistance
- C4-M
- Noise emission
- ≤ 72 dB
General
- Dimensions (W×H×D)
- 2,000 × 2,470 × 1,700 mm
- Weight
- 6.75 ± 0.2 t
- Scalability
- 6–8 units in parallel
- Fire suppression
- Dry pipe · gas detection & ventilation · aerosol · alarm system
- Seismic design
- Zone 4
- Certifications
- IEC 62619 · IEC 63056 · IEC 60730
Specifications from official Risen documentation. Always confirm against the current datasheet before specifying.