If you have a large fountain and don't want to deal with electrical cords any longer this is the solar pump and panel kit for you. It stores solar power as well so it will run into the evening or on cloudy days too with just the push of a button. This solar pump and panel kit is perfect for converting larger outdoor fountains from electric to solar power or creating a spraying pond fountain. Water flow is 422 gph with maximum lift of 118" when a 1/2" tube is connected and conditions are optimal. The pump comes with adapters so you can make your own pond fountain or convert an electric pump to a solar pump. This pump can operate on solar power when set to the "On" position. In good sunlight conditions the pump will be powered by solar energy. In addition the battery pack will be recharged via solar energy. If it is a cloudy day or night time the battery can run the pump. Simply press the battery on/off button to run on battery power. If fully charged the batteries will power the pump for up to 4 hours. When the batteries are depleted you can press the battery on/off button to switch to sun power. The pump will then be powered by the solar panel and the pump will resume running when the sun comes out. The battery generally lasts between 12-18 months but with repeated charges and discharge cycles the battery will become less efficient and battery capacity may reduce. If the battery does appear less efficient you may try and boost charge it. In order to boost charge the battery you must leave off for 2-3 sunny days to allow maximum charge to the battery. If the boost charge does not help the battery than you will need to replace it. This kit comes with two 16' cables for the pump and LED light to connect to the solar panel.