Lightweight fiberglass outdoor wall fountain. Designed to use either solar power or battery power, on sun mode, the pump will be powered by solar energy while using part of the energy to charge the batteries. If you would like to run the pump on an overcast day or at night, simply push the On/Off button to turn on the battery mode. If the batteries are fully charged, the fountain will run for up to 4 hours. When the battery power is depleted, the system will automatically switch to be powered by the solar panel, and the solar pump will start up again when the sun comes out. This option also comes with LED lights which turn automatically at night. The LED lighting may be conveniently placed in the basin of this fountain for lighting effect. The battery life is usually 12-18 months. If you notice that your battery power is less efficient, you may try and boost charge it. To do that, leave your fountain 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. Contact us for replacement batteries.