Sungrow batteries are advanced energy storage batteries used mainly with solar power systems and battery energy storage systems (BESS). They are designed to store electricity generated from solar panels or the grid, then supply it when needed — for example at night or during power outages. 

Sungrow itself, Sungrow Power Supply Co., Ltd., is a major Chinese energy technology company known globally for solar inverters and energy storage solutions. It operates in over 150 countries and has supplied large-scale energy storage systems in commercial, industrial, and residential sectors.