Battery Powered Backpack Sprayer Auto Mixer Compatible with Dewalt 20V

The Ecarke Battery Powered Backpack Sprayer is a cordless yard tool designed to streamline lawn care, fertilizing, and outdoor cleaning. Compatible with Dewalt 20V batteries, this bare-tool unit eliminates manual pumping entirely. It is well suited for homeowners with large lawns, gardens, or farmlands who already own compatible power tool batteries and want an efficient way to distribute liquids.

A standout capability is the integrated one-touch auto-mixing system. Rather than manually shaking the tank, pressing a single button blends powders, concentrates, and liquid fertilizers to prevent clumping and uneven application. The 4.2-gallon tank features a wide-mouth lid to minimize spills during refills, while the entire unit weighs just 7 pounds empty. Padded shoulder straps and waist support help distribute weight comfortably during extended spraying sessions.

Spray performance is adaptable thanks to a dual-mode pressure system. Users can rely on a default 100 PSI setting or turn the rotary knob to adjust anywhere from 0 to 100 PSI, moving easily from a fine mist to a targeted jet stream. The stainless steel wand extends to 42 inches, utilizes a metal interface to prevent leaks, and includes a trigger lock for continuous spraying. The sprayer also comes equipped with six swappable nozzles that fit into a built-in storage compartment on the unit.

Before buying, keep in mind that this is a bare unit and does not include a battery or charger. Each unit undergoes factory water testing before shipping, meaning residual moisture will be present inside the tank and requires a quick rinse before the first application. In rare cases, the internal fan blade might loosen during transit and require manual reattachment.

Verdict: This sprayer is a practical choice for anyone who already uses Dewalt 20V power tools and needs a high-capacity, pump-free sprayer for lawn care, gardening, or outdoor cleaning. It delivers solid pressure control, automated mixing, and versatile nozzle options in a comfortable backpack design.

• Tank Capacity: 4.2 gallons
• Empty Weight: 7 lbs
• Battery Compatibility: Dewalt 20V (battery not included)
• Pressure Range: 0–100 PSI adjustable
• Wand: Stainless steel telescopic wand extending to 42 inches
• Nozzles Included: 6 interchangeable nozzles with onboard storage
• Low Voltage Protection: 2.3V over-discharge auto shut-off
• Warranty: 1-year warranty

A great fit if you:

• Already own Dewalt 20V batteries and want a compatible bare-tool yard sprayer.
• Spray fertilizers, powders, or concentrates that benefit from automatic mixing.
• Need a large 4.2-gallon capacity to cover gardens, lawns, or farmland without frequent refills.
• Want adjustable spray pressure ranging from light misting to 100 PSI jet output.

Consider something else if you:

• Do not own a Dewalt 20V battery and need an all-in-one kit with a battery and charger included.
• Prefer a handheld or smaller capacity sprayer for quick indoor plant care.

Does this backpack sprayer come with a battery?
No, it is sold as a bare unit and requires your own Dewalt 20V battery to operate.

Why is there moisture inside the tank right out of the box?
Every unit is tested with water at the factory to verify leak-proof performance before shipment. Simply rinse the tank prior to your first use.

How many tanks can it spray on a single charge?
When powered by a 4.0Ah Dewalt 20V battery, the sprayer can deliver more than 30 full tanks of continuous spraying and mixing per charge.

What types of nozzles are included with the sprayer?
The package includes six interchangeable nozzles suitable for garden care, lawn treatments, farmland tasks, car washing, and pet bathing, all stored in an onboard compartment.