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Performance Test

The stable operation of an energy storage system throughout its entire lifecycle relies on a rigorous quality assurance system. At Hizenergy, we uphold our “Three Strictness” quality management principle — strict selection, strict testing, and strict application — to guarantee safety, reliability, and long-term value for our clients.

Strict Selection: Premium Components for Lasting Returns

Every EnerBox system starts with carefully selected Grade A+ cells featuring a voltage deviation below 5 mV and a minimum overcapacity of 5%. This ensures consistent long-term performance, faster capital recovery, and up to 10% higher overall project efficiency.

In the Power Conversion System (PCS), we combine IP65-rated protection with high-quality components and comprehensive AC/DC safety configurations, ensuring 100% lifecycle safety for both batteries and systems.

Aging Test

Strict Testing: Full-Process Validation Across 180+ Tests

Quality is verified through a 13-category, 180-item testing program that covers every stage — from cell and pack to cluster and full system level. Each product undergoes multi-scenario validation and simulated stress testing, ensuring performance consistency before it ever reaches the field.

Final Inspection

Strict Application: Proven Reliability in 4,600+ Deployments

To date, over 4,600 EnerBox units have been successfully deployed across factories, industrial parks, charging stations, distributed PV systems, and microgrids. Each system has proven its durability under challenging installation conditions and unstable grid environments, demonstrating the strength of Hizenergy’s engineering and quality system.

Ready for Shipping

Beyond deployment volume, performance validation in real-world conditions provides the ultimate proof of our quality commitment. Field data confirms that performance has surpassed all design specifications，here's a representative example:

Case Highlight: Proven Efficiency from Real-World Data

Typical case1.5MW 3.135MWh

In February 2025, 10 ES150-2L liquid-cooled energy storage system cabinets were put into operation at a plant in Guangdong, China. Practice proves that the performance data has exceeded all design targets: 

• Average charging capacity per unit: 353.1 kWh
• Battery overcapacity: 6.7%
• Average discharging capacity per unit: 311.39 kWh
• System efficiency (including auxiliary power): 88.13%

These results prove the stability, safety, and efficiency of EnerBox — real-world performance that turns quality management into measurable value.

Hizenergy: Where Quality Powers Reliability
From cell selection to system operation, every detail is designed to deliver results — not promises.

Website：https://www.hzess.com

E-mail：overseas@huaz-tec.com