Greenworks 40V Cordless Backpack Sprayer - 4 Gallon Capacity

Our review of the Greenworks 40V Cordless Backpack Sprayer finds it best for homeowners and small-property managers who need a comfortable, battery-powered sprayer for tasks like weed control, fertilizing and light cleaning. The single biggest reason to consider this tool is its combination of a 4-gallon tank and a long 25ft spray range, which together deliver extended coverage without the physical effort of a pump sprayer. It is a practical, user-friendly option when paired with a compatible Greenworks 40V battery and is especially appealing to those who value comfort for longer jobs.

Key Features

• 70 PSI Max Pressure: Provides strong spray performance for reaching taller plants and longer distances to cover more ground per pass.
• 25ft Spray Range: Allows users to stand back from treatment areas for safe, efficient application over lawns and beds.
• 4 Gallon Tank: Holds enough solution for extended sessions so users can spray up to a large area before refilling.
• 120 Gallons Per Charge: When used with a Greenworks 2.0Ah battery, it can spray up to 120 gallons per charge, reducing interruptions during a project.
• Ergonomic Double-Padded Straps: Adjustable, double-padded shoulder straps ease fatigue and support the back for more comfortable all-day use.
• Five Interchangeable Tips: Includes double, single, fan, 4-hole and adjustable tips to match the spray pattern to the job for better results.

Who It's For

This sprayer suits homeowners, gardeners and lawn-care enthusiasts who need a cordless alternative to hand pump models and want a balance of comfort and capacity for routine tasks like spot weed treatment, mosquito control and foliar feeding. It is especially useful for people who value adjustable spray patterns and longer reach without moving a ladder or wand frequently.

It is not ideal for those who do not already own a Greenworks 40V battery and do not want an additional battery purchase, or for heavy commercial crews who need continuous runtime beyond what a single 2.0Ah charge typically provides. If complete leakproof performance under all conditions is essential, users should be aware of occasional reports of leakage and inspect seals regularly.

Pros & Cons

Pros

• Comfortable to carry for extended periods thanks to the double-padded, adjustable straps.
• Good coverage from the 4-gallon tank and a long 25ft spray range for efficient work across lawns and beds.
• Versatile application options with five interchangeable spray tips for different tasks.
• High-pressure output at up to 70 PSI delivers effective spray performance for various treatments.

Cons

• Battery is sold separately, and customer reports show mixed experiences with battery life and occasional failure to recharge.
• There have been some customer notes about leakage; careful setup and maintenance are advisable.

Specifications

Brand	Greenworks
Power	Compatible with Greenworks 40V battery (sold separately)
Max Pressure	70 PSI
Spray Range	25 ft
Tank Capacity	4 gallons
Estimated Output Per Charge	Up to 120 gallons per charge with Greenworks 2.0Ah battery
Included Tips	5 tips: double, single, fan, 4-hole, adjustable

Our Verdict

The Greenworks 40V Cordless Backpack Sprayer is a sensible choice for homeowners and gardeners who need a comfortable, capacious cordless sprayer with a long reach and versatile nozzles. It represents good value when you already own or plan to buy a Greenworks 40V battery, delivering efficient coverage and reduced effort compared with manual pump models, though buyers should plan for battery purchase and routine seal checks.

Frequently Asked Questions

Is the battery included?
The sprayer is tool-only and requires a compatible Greenworks 40V battery, which is sold separately.

How long does one charge last?
Greenworks states up to about 120 gallons per full charge when used with a 2.0Ah battery, but actual runtime varies with pressure setting and spray pattern.

Are replacement tips available?
Yes, the unit uses interchangeable tips and the included set covers common patterns; additional or replacement nozzles can be sourced from Greenworks accessories.