Motorized Backpack Sprayer can spray for up to 1½ hr.
PetraTools 4 Gallon Battery Powered Backpack Sprayer (HD4000) – Extended Spray Time Long-Life Battery - New HD Wand Included, Wide Mouth Lid, Multiple Nozzles & Battery Included : Amazon.ae: Patio, Lawn & Garden
Knapsack Motorized Power Mist Blower – Green Safety Limited
Motorized Knapsack Sprayer - 20l - Farmsquare
Motorized Knapsack Sprayer (15Litres)- Petrol Driven. - Farmsquare
Amazon.com : WOEKBON 4 Gallon Battery Powered Backpack Sprayer Electric Garden Pump Sprayer with Lithium Battery for Long Time Spray Brass Telescope Wand and Multiple Nozzles for Spraying Cleaning : Patio, Lawn
5 Gallon Gas Backpack Sprayer 435 PSI Pump for Mosquitoes Pesticides – Cardinal Sprayers
RedMax 4-Gallon Battery-Powered Backpack Sprayer – Gardenland Power Equipment