Selecting the right energy storage supplier directly determines project quality and long-term system performance. Based on industry best practices, these five indicators are essential when evaluating a manufacturer:

1. Certification System Completeness

Verify UL, IEC, TUV, CE, and UN38.3 compliance across both battery modules and system-level components.

2. Factory Scale & Automation Level

A professional ESS manufacturer should have automated production lines, strict quality control processes, and traceable battery data management.

3. Core Technology Competence

Check whether the supplier has self-developed BMS, cell sorting capabilities, thermal design expertise, and cluster-level balancing technology.

4. Proven Global Project Experience

Reliable manufacturers can provide reference cases in Europe, Africa, Southeast Asia, Middle East, and the U.S.

5. After-Sales & Technical Support Ability

This includes remote debugging, installation guidance, EMS support, and clear documentation.

A trustworthy supplier not only delivers products but also builds long-term value through continuous service and technological innovation.