Field King battery-powered pump sprayer 2‑Gal White — lithium-ion compressor, steady 20 psi

Field King 190571 is a 2-gallon battery-powered pump sprayer that uses an internal lithium-ion compressor to maintain 20 psi for steady, hands-free spraying of water-soluble herbicides, pesticides, fertilizers, and cleaning solutions.

This sprayer replaces manual pumping with a built-in electric air compressor that pressurizes the tank above the liquid, pushing solution through the hose and out the nozzle for an even application. The compact, teardrop-shaped polyethylene tank lowers the center of gravity for better balance, includes onboard nozzle storage, and accepts a variety of spray tips for professional results. Designed for homeowners, landscapers, and light commercial technicians, the Field King 190571 focuses on consistent output, chemical resistance, and user safety.

How does the compressor-based system improve spray consistency?

The internal lithium-ion powered compressor keeps tank pressure constant at 20 psi so spray pattern and flow remain uniform from start to finish, avoiding the fluctuating output common with manual pumps. No repeated hand pumping saves physical effort and speeds up routine jobs.

• Maintains steady 20 psi pressure for uniform application
• Eliminates manual pumping—saves approximately 20% of task time
• Battery-driven compressor ensures continuous flow until the tank is empty

What materials and components protect the sprayer from chemical wear?

Field King selected Viton seals in the wand shut-off and chemical-resistant components to withstand common water-soluble pesticides, herbicides, and fertilizers. The 21-inch poly wand and in-line filter extend service life by blocking debris and resisting deterioration from aggressive liquids.

• Viton seals in shut-off for improved chemical resistance
• 21-inch poly wand for durable, long-reach spraying
• Easy-to-clean in-line filter reduces nozzle clogs and maintenance

Which accessories and safety features make routine use easier?

The sprayer ships with four nozzle options—brass adjustable, two flat-fan tips, and a foaming nozzle—plus compatibility with Tee Jet nozzles to match application needs. Safety features include a pressure release valve for safe depressurization and a commercial-grade shut-off with a lock-on option to reduce hand fatigue during extended spraying.

• Includes brass adjustable, two flat fans, and a foaming nozzle
• Commercial-grade shut-off with comfortable grip and lock-on feature
• Pressure release valve allows safe depressurization before opening

How does the design support portability and storage?

The teardrop-shaped 2-gallon tank lowers the center of gravity for stability when carrying or setting down, while built-in nozzle storage keeps tips protected and organized. The compact footprint and rechargeable battery system make it a practical choice for jobs around yards, gardens, and small commercial properties.

• Teardrop tank shape improves balance and reduces tipping
• Integrated nozzle storage protects tips and simplifies transport
• Rechargeable lithium-ion battery for cordless mobility

Who is this for: The Field King 190571 suits homeowners who want an easier, more consistent way to apply lawn and garden treatments, landscape pros who need a lightweight cordless sprayer for frequent spot treatments, and property managers seeking a reliable small-capacity tool for targeted applications. It’s ideal where precise, steady spray patterns and chemical resistance matter but large-capacity commercial tanks are unnecessary.