The Chapin Wide Mouth Battery Powered Backpack Sprayer features a 20-volt Black & Decker Lithium Ion battery with a battery charger. Enjoy 1.75 hours of continuous spraying, that's up to 50 gallons! Offers 25-30 PSI with a 35-foot maximum horizontal spray stream. 6-inch wide mouth funnel for easy filling and cleaning with a carrying handle built right into the cap. This sprayer weighs 39% less than competitive units. Santoprene seals in the pump offer maximum chemical resistance. Cushion grip shut-off with built-in, serviceable filter to assure that no debris can clog the nozzle tip. Deluxe padded straps offer comfort for prolonged use. Durable and long-lasting with regular cleaning. Additional batteries and chargers are available through Black & Decker.