Energy-storage power conversion systems connect batteries to AC grids or loads and control charge, discharge, voltage, frequency and grid support. Products range from residential hybrid inverters to megawatt container or medium-voltage PCS, with very different electrical and thermal boundaries.
Match rated and overload power, DC voltage window and grid code first. Then compare weighted efficiency, cooling, enclosure, altitude and temperature derating, communication protocols, parallel capacity, transformer boundary, certifications, cybersecurity, warranty and commissioning support.
Use the table as a first comparison, not as a substitute for a technical agreement. Ask shortlisted manufacturers to confirm the current configuration, test method, duty cycle, charging or energy-supply boundary, applicable standards, warranty, local service and spare-parts plan in writing.