Proback 12v Battery Diaphragm Pump Backpack Sprayer 4.7 Gallon 18l Agricultural Weed Pest Garden Water Tank Capacity: 18L 4.7 gallon for garden, yard, pest. More durable white tank. Battery: 12V 8A Diaphragm Pump: 12V 3.1L 0.8GPM 70PSI. Applicable for agricultural use. Battery Charger: 12V 1A Accessories: 31.5 inch longer plastic steel lance, 1m hose, plastic conical single nozzle, double nozzle,ball valve hand level for long time spraying, squeeze hand level for short time spraying.