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Reliable 836 Kwh Commercial Energy Storage Cabinet From China. High Energy Capacity: Nominal capacity of 836kWh with 209kw output for commercial use. Long Cycle Life: Features 8000 cycle charging life with 90% capacity retention. Advanced Safety System: Includes proactive warning and PACK level fire safety solution. Efficient Cooling: Utilizes liquid cooling method for PCS to ensure stability. High Conversion Rate: Energy conversion rate is greater than or equal to 90%. IP55 Protection Grade: Shell protection grade IP55 for reliable outdoor operation. ISO9001 Certified: Manufactured under ISO9001:2000 certification standards.