New FlowZone FlowZone Storm 2V Variable-Pressure Backpack Sprayer 2.5 Gallon The FlowZone 2.5 gallon capacity electric backpack sprayer is a compact for easy maneuverability that's also electric. Powered by 18V lithium-ion batteries, the FlowZone Pro-Series sprayers contain... MSRP: $242.00 Add to Cart