Designed for Makita Compatibility: Our backpack garden sprayer seamlessly is compatible with Makita 18V Lithium-ion batteries, ensuring easy battery replacement whenever needed. Additionally, we provide a 2.5Ah 21V battery and charger for continuous power, providing uninterrupted power to fuel your gardening endeavors. Long Working Time: The battery powered sprayer can work up to 4 hours of continuous operation on a single charge, enabling the electric sprayer to spray the equivalent of 18 tanks of water and solutions one time. The garden sprayer is equipped with a digital voltage display, reminding you to charge in time, ensuring optimal performance and longevity. Adjustable and Precise Spraying: This weed sprayer features an adjustable PSI knob, ranging from 0 to 100 PSI, allowing you to customize the spraying intensity according to your needs. Whether you need a gentle mist for fragile foliage or a forceful stream to reach faraway areas, this adjustable spray power ensures optimal performance and flexibility in watering tasks.