Our Professional Cordless Electrostatic Sprayer allows the user hours of spraying time (4-hours per battery charge) without the hassle of dragging a cord. In addition, it is designed to save time and labor, spray less liquid and cover more surfaces. Victory Sprayers' Patented technology provides an electrical charge to solutions, allowing them to wrap conductive surfaces with an effective and even coverage. Double-charged particles envelope all conductive surfaces shadowed, vertical and underneath. Patented electrostatic charge penetrates chemical providing a thin, even spray pattern on all surfaces Cordless convenience allows for effortless movement room to room 3-in-1 nozzle allows you to set particle size to match your application Victory 16.8-Volt lithium-ion battery allows you to run between 3 tanks to 11 tanks on a single charge (depends on nozzle setting