Solis S5-EA1P3K-L is a 5th generation of AC coupled products, designed to provide PV energy storage upgrading solutions for the built grid-tied system, so that it has energy storage and emergency power supply capabilities. Products compatible with lead-acid batteries and lithium-ion batteries and integrates battery treatment and protection functions, it suitable for any brand PV system energy storage upgrading，which making system safety, reliability, efficiency, and strong compatibility.