An electric knapsack is a portable, battery-powered sprayer designed for a variety of tasks, including pest control, agriculture, and cleaning. It provides users with the convenience of carrying a backpack-style unit while ensuring an efficient, consistent spray pattern over large areas. Typically equipped with a rechargeable battery, the electric knapsack eliminates the need for manual pumping, which reduces user fatigue and enhances productivity. The device’s design allows for extended use without the need for frequent refills, making it suitable for both professional and personal applications. The electric motor powers the pump, delivering an even distribution of liquids, such as pesticides, herbicides, or disinfectants, to ensure optimal coverage.