JKESS C&I All-in-One BESS | 241kWh / 261kWh Liquid-Cooled | 600-876V LiFePO4 | Optional 125kW PCS + Solar MPPT | Hybrid / Off-Grid / On-Grid

The JKESS 241kWh/261kWh Liquid-Cooled BESS is the flagship of the JKBMS commercial energy storage lineup. Where air-cooled systems manage temperature, liquid cooling controls it — delivering tighter cell temperature uniformity, higher cycle efficiency, and longer service life in demanding high-ambient or high-cycle-rate environments. Available with an optional 125kW hybrid PCS and 100kW MPPT for direct solar integration, and an optional STS static switch for seamless grid/off-grid switching.

System Specifications

Why Liquid Cooling — The Performance Difference

Superior Thermal Control — Tighter Cell Temperature Uniformity

Air cooling manages average cabinet temperature. Liquid cooling controls individual cell temperature — maintaining tighter temperature uniformity across the entire battery bank. In high-ambient environments (desert, tropical, rooftop installations) or high-cycle-rate applications, this directly translates to higher round-trip efficiency, slower capacity fade, and longer service life compared to equivalent air-cooled systems.

Optional Solar Integration — 125kW PCS + 100kW MPPT

The optional 125kW hybrid PCS and 100kW MPPT module enable direct solar PV integration without a separate inverter — creating a complete solar + storage system in a single cabinet footprint. Ideal for C&I sites with rooftop or ground-mount solar looking to maximize self-consumption and minimize grid dependency.

Optional STS — Seamless Grid/Off-Grid Switching

The optional Static Transfer Switch enables uninterrupted switching between grid-tied and off-grid modes — critical for applications where even momentary power interruption is unacceptable, such as data centers, hospitals, and precision manufacturing facilities.

Enhanced Fire Suppression — Five-Layer Protection

Beyond the standard three-layer suppression system, the liquid-cooled BESS adds gas detection and explosion-proof pressure relief vents — providing the most comprehensive fire safety architecture in the JKBMS product lineup.

Application Scenarios

•  High-ambient industrial facilities — where liquid cooling outperforms air cooling
•  Commercial buildings with solar — complete solar + storage in one system
•  Critical facilities — hospitals, data centers requiring seamless grid/off-grid switching
•  High-utilization EV charging hubs — high-cycle buffer storage with superior thermal management
•  Microgrids in demanding environments — tropical, desert, or high-altitude sites

Shipping Information

Price include the shipping fee,due to system size, weight (≤2,700kg), and lithium battery regulations, sea or rail freight is required. Air freight is not possible. Please contact us to discuss freight and logistics arrangements for your project.

OEM / ODM & Custom Configurations

Available with custom capacity, PCS power rating, MPPT configuration, and communication interfaces. Our engineering team provides 7×24 support from initial consultation through project commissioning.

 Contact us for project pricing, configuration options, and logistics arrangements.