... are followingreasonable design , light weight, small size,power, high conversion,pure sin wave AC 220V ... automatic circuit ,high-capacity maintenance-free reserve power design;4.It is a new generation ... number LG—FD12A20W Solar power systemNoDisposal itemMaterial instructionParameter instructionLife time1Solar moduleImported polycrystalline silicon cell20WP25years2500WDC/AC converterPure sine waveDC ...