CTECHI ESS30KW/65KWh Split-Type Commercial & Industrial Battery Energy Storage System (BESS)

KEY SPECS

True Split-Type Modular Architecture

The ESS30KW/65KWh adopts a genuine split-type configuration, physically separating the battery cabinet (housing 4 × 16S1P 314Ah LFP packs) from the 30kW hybrid inverter cabinet. This design dramatically reduces per-unit weight and footprint, making it the preferred choice for installations in space-constrained environments such as underground parking lots, small factory floors, retail basements, and rooftop equipment rooms. Each cabinet can be independently positioned up to 5 meters apart, and both can be transported through standard doorways and elevators without specialized heavy-lift equipment, significantly simplifying logistics and reducing on-site installation complexity and cost.

High-Performance 314Ah LFP Cell Platform for Maximum Longevity

At the core of the system are grade-A 314Ah lithium iron phosphate (LFP) cells configured in a 16S1P per-pack arrangement, with 4 packs connected in series to achieve a 204.8V DC bus. LFP chemistry provides inherent thermal runaway resistance — no cobalt, no risk of thermal propagation under overcharge or mechanical abuse conditions. With a depth of discharge (DoD) of 90% and a cycle life exceeding 6,000 cycles at 25°C and 0.5C rate, the system delivers exceptional long-term value. The 314Ah cell platform, shared across the entire CTECHI split-type product line, ensures proven reliability, supply chain stability, and consistent performance for over 15 years of daily cycling.

Intelligent Multi-Layer Battery Management System (BMS)

The integrated 3-level BMS architecture — spanning cell-level, pack-level, and system-level monitoring — continuously tracks voltage, current, temperature, and state of charge (SOC) for every individual cell. Active balancing maintains cell voltage deviation within ±25mV, maximizing usable capacity and extending overall pack lifespan. Comprehensive protection mechanisms cover overcharge (cell > 3.65V), over-discharge (cell < 2.7V), overcurrent and short-circuit (< 1ms response), temperature anomalies (charge: 0°C55°C; discharge: -20°C60°C), and insulation resistance degradation (> 500Ω/V threshold). This industrial-grade protection framework ensures safe, reliable operation across diverse installation environments.

30kW Hybrid Inverter with Seamless Dual-Mode Operation

The 30KW Hybrid Inverter-J supports both grid-connected and off-grid modes with seamless automatic switching in under 20 milliseconds, ensuring critical loads remain powered during grid disturbances. The pure sine wave output (THD < 3%) delivers clean, stable power suitable for sensitive industrial electronics and control systems. With a peak efficiency of 98.0% and support for both three-phase four-wire (3W+N+PE) and three-phase three-wire (3W+PE) AC output at 230/400V, 50/60Hz, the inverter integrates smoothly into existing facility power distribution infrastructure. RS485 and CAN communication interfaces enable remote monitoring, SCADA integration, and EMS coordination.

Flexible Deployment for Diverse C&I Applications

With its 30kW power rating and 64.3kWh usable capacity, the ESS30KW/65KWh is optimized for small to medium commercial and industrial applications. Ideal scenarios include small commercial buildings such as convenience stores, pharmacies, and restaurants; light industrial workshops and warehouses; telecom base station backup power; remote area microgrids and diesel generator hybridization; solar self-consumption optimization for SMEs; and EV charging station load management. The split-type design allows the battery cabinet to be placed in a secure, climate-controlled interior while the PCS cabinet operates in a utility room or outdoor sheltered area — accommodating the diverse spatial constraints of existing commercial facilities.

Comprehensive Safety and System Protection

Safety is engineered into every system layer. The IP54-rated enclosures protect against dust ingress and water spray, enabling installation in semi-outdoor or industrial environments. The air-cooling system employs intelligent variable-speed fans activated by multi-point temperature sensors at cell, pack, and cabinet levels, maintaining optimal operating temperatures. Built-in protection includes door interlocks, emergency stop functionality, and optional smoke detection. The battery packs feature front-access maintenance design, eliminating the need for rear clearance — a critical space-saving advantage for wall-mounted and corner installations.