Mayoki 3-Gallon Backpack Sprayer Compatible with DEWALT 20V — Includes 2.0Ah Battery, Up to 79 PSI

The Mayoki 3-gallon backpack sprayer is a battery-powered, DEWALT 20V-compatible pump system that delivers adjustable pressure up to 79 PSI for gardens, lawns, and light commercial spraying without manual pumping.

This electric backpack sprayer pairs a spacious 3-gallon translucent tank with a 2.0Ah DEWALT-compatible battery and fast charger, giving you cordless operation and clear fluid visibility. Built for homeowners and pros who need portability and consistent output, the unit offers multiple nozzle choices, two wand options, and safety features that protect battery life and components.

How long will the battery run and how many tanks can I spray on one charge?

With the included 2.0Ah battery, the sprayer is optimized for long runtimes so you can finish larger jobs without swapping power sources. Mayoki rates the system to spray up to 11 full 3-gallon tanks (about 33 gallons total) on a single charge under typical conditions.

• Includes a DEWALT 20V-compatible 2.0Ah battery and 2A fast charger.
• Single-charge capacity of up to ~33 gallons (11 full tanks) in normal use.
• Low-voltage protection automatically stops the motor below 14.4V to prevent over-discharge.

What spray options and reach does this sprayer offer?

Adjustable pressure up to 79 PSI combined with a 0.33 GPM flow rate gives you both high-pressure and low-pressure application modes for different tasks. The kit includes seven nozzle tips and two wand choices—stainless steel for durability and a plastic wand for lighter use—so you can switch patterns and reach up to about 25 feet.

• Pressure range: low mode (45 PSI) and high mode (79 PSI).
• Flow rate around 0.33 gallons per minute and spray reach up to 25 ft.
• Nozzle set: seven interchangeable tips plus 1.58 mm brass and 2.0 mm plastic large-aperture options.
• Two wands included: stainless steel and plastic for different chemical compatibilities.

Is the sprayer comfortable for extended use and easy to maintain?

The Mayoki backpack frame uses extra-wide padded shoulder straps and a ventilated back pad to reduce fatigue during longer shifts. The translucent tank makes chemical level monitoring straightforward, while the lock-on trigger and factory leak-testing simplify everyday operation and care.

• Ergonomic backpack with padded straps and ventilated back pad for comfort.
• Translucent 3-gallon tank for instant fluid level checks and easy refills.
• Lock-on trigger for sustained spraying without hand strain.
• Factory-tested for leaks; lifetime component support and a 5-year warranty.

Can I use this sprayer for delicate biologicals like beneficial nematodes?

Yes — the sprayer’s nozzle selection and low-pressure mode make it suitable for applications that require gentler delivery. Large-aperture nozzles reduce clogging risk and the low-pressure setting helps preserve live biological agents during application.

• Includes 1.58 mm brass and 2.0 mm plastic large-aperture nozzles for minimal clogging.
• 45 PSI low-pressure mode recommended for sensitive products like nematodes.
• Interchangeable tips allow you to tailor droplet size and coverage for safe application.

Who is this for: The Mayoki 3Gal battery backpack sprayer fits homeowners, landscapers, and small-scale commercial users who want cordless convenience, adjustable pressure, and robust runtime. It’s ideal for lawn and garden care, targeted pesticide or fertilizer application, disinfection tasks, and any situation where mobility and consistent output matter. Buyers seeking a DEWALT 20V-compatible power platform with ergonomic support and parts backing will find this sprayer a practical, serviceable choice.