A 250 kW / 522 kWh outdoor liquid-cooled cabinet with integrated PCS, thermal management and fire suppression.
02Overview
Product · Technical data
522 kWh Liquid-Cooled Energy Storage Cabinet (250 kW)
A 250 kW / 522 kWh outdoor liquid-cooled cabinet with integrated PCS, thermal management and fire suppression.
Model-specific price, datasheet and lead time. Engineering reply within one business day.
Specification
Brochure data
- Model
- ESSL522-832-05C (250 kW / 522 kWh)
- Nominal capacity
- 522 kWh
- Rated output power
- 250 kW
- Rated voltage
- DC 832 V
- Capacity
- 628 Ah
- Voltage range
- DC 689 V to 936 V
Preliminary figures from the current brochure. Final configuration and performance are confirmed in the quotation.
03Key features
-
Configuration attributes
- Available configurations include: 522 kWh, 250 kW, Liquid-cooled.
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Specified against the duty cycle
- Cell and plate selection matched to the real operating profile.
- Capacity and autonomy sized to the load, not to a catalogue average.
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Batch control
- Incoming material control and in-process inspection on every batch.
- Traceability from plate casting through to packing.
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End-of-line testing
- Electrical testing before packing, with results available on request.
04Specification
| Parameter | Value |
|---|---|
| Model | ESSL522-832-05C (250 kW / 522 kWh) |
| Nominal capacity | 522 kWh |
| Rated output power | 250 kW |
| Rated voltage | DC 832 V |
| Capacity | 628 Ah |
| Voltage range | DC 689 V to 936 V |
| Rated current | 314 A |
| Connection | Three-phase four-wire + PE |
| AC grid voltage | 380 V (-15% to +15%) |
| Grid frequency | 60 Hz |
| Power factor | 1 leading to 1 lagging |
| Off-grid voltage | 380 V |
| Unbalanced load | 100% three-phase unbalanced load supported |
| Communication | RS485, Ethernet, 4G |
| Cell type | LFP 3.2 V / 314 Ah |
| Battery configuration | 1P52S per box, 1P260S per two clusters |
| Fire suppression | Cabinet level + in-pack level |
| Thermal management | Cooling, heating, self-test, communication |
| Operating temperature | -20 to 50 C |
| Operating humidity | 5% to 95% RH, non-condensing |
| Dimensions (W x D x H) | 2468 x 1368 x 2123 mm |
| Weight | 4.5 t |
| Protection rating | IP54 |
| Altitude | up to 3000 m |
Figures are taken from the current AllGrand product brochure. Specifications are indicative and may be revised without notice — confirm with our engineers before ordering.
Applications & selection
Size the energy-storage system around the load, not nameplate kWh alone
Typical fit
- Commercial and industrial backup
- Peak shaving and solar self-consumption
- Microgrid, telecom and remote power
Confirm before quotation
- Load profile, peak kW and required usable kWh
- Autonomy, C-rate, efficiency and temperature range
- Site location, grid interface and control requirements
Engineering guides
Commercial BESS sizing checks Turn load data, usable energy, C-rate and site constraints into a defensible specification. Battery runtime calculation See which efficiency, temperature and aging losses reduce usable AC energy. Battery storage RFQ checklist Use the same technical inputs our engineers need to price and configure a system.
Send the load and installation details for a model-specific answer.
Our engineering team normally replies within one business day.
06Downloads
07Supply & customization
Lithium battery storage supply for commercial, industrial and residential projects. Share the load, capacity and site constraints so the battery, PCS and enclosure can be specified together.
Factory supply
- AllGrand Group has manufactured batteries since 1987, with production bases in Hebei and Shandong and customers in more than 100 countries.
- Model-level supply for single products, repeat orders and project quantities.
- OEM/ODM support for configuration, labelling and export documentation.
What to send
- Required model, capacity or system size.
- Application, load profile and required backup time.
- Destination country, order quantity and target delivery window.
Documents & quote
- Datasheet and model-specific price.
- Lead time and packing details confirmed per order.
- Inspection, labelling and export documents agreed before shipment.
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03
High-Voltage Stacked Energy Storage System
A 120 kWh high-voltage cabinet with three-level BMS monitoring, for small factories, scenic areas, border posts and islands.
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Let's build the right energy solution.
Send us the application, nominal voltage and capacity target. Our engineers will specify the battery and system architecture around it.