EVE showcases 836 kWh split-unit storage, eyes overseas expansion

Chinese battery maker EVE Energy showcased its flagship 836 kWh Mr. Brick split-unit storage cabinet at the SNEC ES+2025 exhibition in Shanghai, highlighting its strategy to penetrate overseas commercial and industrial markets.

The company said that mass production began in the third quarter of 2025, with large-scale deliveries already underway.

Each cabinet delivers 836 kWh and 418 kW AC rated power, supporting both 1,000V and 1,500V configurations. Units can be combined modularly to reach 5 MWh, covering small to utility-scale projects. DC-AC round-trip efficiency exceeds 90%, supporting continuous 24/7 operation.

The system uses EVE’s MB56 lithium iron phosphate cells, 628 Ah each with 176 Wh/kg energy density. Benchmarking against the company’s Mr. Giant series suggests lifecycle potential exceeding 15 years, matching long-term investment horizons in overseas commercial projects. It operates from -30°C to 50°C, meets IP55 protection standards, and maintains noise below 70dB for urban and industrial environments.

Mr. Brick’s split-unit design separates battery and electrical modules, enabling compliance with international shipping weight limits and overcoming cross-border transport constraints. Structural optimization increases energy density per square meter by 65%, reduces footprint by 37%, and cuts installation time by more than half. In a 3.2 MWh Saudi industrial park project, the design accelerated deployment of an integrated solar-storage-EV charging system by nearly 50%.

Safety meets international standards with physical separation of battery and electrical compartments, independent coolant and circuit paths, expanded fire barriers, explosion venting, intelligent suppression systems and over 128 sensors for early fault detection, achieving sub-20 millisecond response. The system passed UL9540A thermal runaway testing.

Mr. Brick has already been deployed in Saudi and German commercial sites, enabling peak shaving and solar self-consumption. A Saudi industrial park installation reduced electricity costs by 25%, while a German logistics park linked PV and EV charging, lowering charging expenses by 30%. On the grid side, modular configurations support microgrids and utility-scale projects, including a 1.3 GWh Middle East solar-storage microgrid that boosted PV utilization to 75% and enabled millisecond black starts.

Emerging applications include green hydrogen production and heavy-duty EV charging, with single-charge ranges exceeding 300 km and integration with electrolyzers and battery swapping systems, increasing port logistics efficiency by 20%.

EVE targets Europe, the US and Middle East markets, leveraging UL9540 and IEC 62619 compliance, EMC, seismic and corrosion testing. The split-unit design and simplified integration reduce pack costs by 10% and levelised electricity cost by RMB0.03/kWh. Incremental deployment from 836 kWh up to 5 MWh eases upfront investment, while smart O&M systems cut maintenance by 70% and lifecycle costs by 30% through remote monitoring and over-the-air updates.

With global commercial storage demand projected to rise 45% in 2025, EVE has partnered with TSL Assembly to deploy 1 GWh of storage in Central and Eastern Europe between 2026 and 2030. Mr. Brick’s modular, high-safety design is set to underpin EVE’s overseas expansion and influence the sector’s move toward more flexible, transportable, and secure storage systems.