This Rain Wizard Solar Pump works great with rain barrels and is made to work with low or no pressure systems. The pump will send water out through the pump and into your hose. It is perfect to be used with barrels with or without spigots. If the rain barrel has a spigot, the pump won't tie it up, it will leave the spigot free to be used with watering cans and buckets. The pump is self contained - no need to plug the pump into an outlet and there is no risk of electrical shock. With just 8 hours of direct sunlight charge, it can pump up to 100 gallons at PSI pressure of 13. This pump is easy to use - has a one button to turn on, off and test. Set up is easy - refer to the instruction manual and attach a hose and then turn on. This 3.5 watt solar panel comes with a ground stake and a 15 ft cord for easy placement. Works great with rain barrels and also sprinkler systems.