The solar-powered RainPerfect pump for rain barrels provides pressure for a garden hose or low-pressure sprinklers without the need for an electrical hookup. The solar-rechargeable battery operates day or night and pumps up to 100 gallons on a single charge. The unit installs on or is adaptable to most styles of rain barrels. 914.641.2000. www.rainperfectpump.com.