Tackle high-volume and long distance spray jobs with our most powerful backpack sprayer: the Typhoon 3â„¢. This 3rd generation sprayer is ideal for projects that require up to 1 gallon per minute chemical output. Spray Time: Up to 3 hours Spray Distance: >30 Feet Pressure: 7-115 psi Total Output: Up to 110 gallons per charge Lithium-ion Battery: 18V/5.2Ah Flow Rate: 0.42-1.12 gpm Pump Type: Heavy-Duty Diaphragm