battery operated generator 1.Economic lighiting system 2.Easy to use&maintain 3.5V+6V output voltage 4, CE, IEC, ISO, SGS Portable battery operated generator FS-S3011. Our advantagesWe have patents for the essential parts of the products solar lighitng ststem ----controller and inverterAll our products are approved by CE,IEC,ROHS and ISO9001, and SGSWe can do OEM and ODM, and we have our own ...