Field King Lithium Ion Powered Backpack Sprayer - Pro Max
Best battery-powered sprayer for professionals managing large-scale landscape maintenance.
The Field King™ Pro Max backpack sprayer by Smith Performance Sprayers™ redefines efficiency for landscape applications by eliminating manual pumping. Powered by an 18 Volt lithium-ion battery, this unit delivers consistent 40 PSI pressure for up to 4 hours on a single charge. It features a durable 4-gallon tank, a poly wand, and a powder-coated steel frame for longevity. For versatile coverage, it includes four distinct nozzles: brass adjustable, two flat fans, and a foaming option. Comfort is ensured with a padded shoulder harness, making demanding spraying tasks significantly easier and more reliable.
$205.50
Owner Satisfaction
4.5
/ 5
Category Rank
98
/ 486
#98 in Lawn & Garden Sprayers
Price vs Category Average
-35%
Below average
Battery
182.1
/ Volt lithium-ion amp hour
Who it's for
- Commercial operators requiring equipment that withstands harsh chemical exposure
- Forestry workers needing consistent, fatigue-free chemical application
- Field professionals working long shifts in rugged terrain
Who should skip it
- Casual users or hobbyists on a limited budget
- Remote workers worried about proprietary battery dependency
- Users preferring lightweight gear or simple mechanical repairs
Performance breakdown
Operational Efficiency
Battery-powered pressure eliminates the fatigue of constant manual pumping.
Spray Consistency
Maintains steady 40 PSI output for uniform chemical application across sites.
Build Durability
Powder-coated steel frame withstands the rigors of demanding forestry environments.
Ergonomic Comfort
Padded harness system significantly reduces strain during extended field sessions.
Application Versatility
Four included nozzle types adapt easily to diverse landscape spraying needs.
Field Endurance
Four-hour battery life supports long shifts without needing a mid-day recharge.
Key Specs
Battery
18 Volt lithium-ion 2.1 amp hour
Tank Capacity
4 Gallon
Pressure
40 PSI at 0.2 GPM (with 8002 nozzle)
Spray Duration
Up to 4 hours or 50 gallons
Charger Time
3.5 hours
Wand Material
21" Poly
Frame Material
Powder coated steel
Nozzles Included
4 types
Features
- Eliminates manual pumping with battery power
- Maintains consistent pressure during use
- Durable construction with steel frame
- Offers up to 4 hours of continuous spray time
- Includes four versatile nozzle types
- Padded harness enhances user comfort
- Designed for efficient landscape applications
What customers say
This backpack sprayer earns high praise for its efficiency and reliable performance. Users consistently highlight the powerful, consistent pressure delivered by the lithium ion battery, which significantly cuts down application time. The extended battery life supports multiple large jobs on one charge without pressure loss. Comfort is another key benefit; the ergonomic design and harness reduce fatigue during extended use. While the initial price is higher, customers feel the substantial gains in efficiency and the perceived high quality of the durable components justify the investment. Overall, satisfaction is high for this professional grade tool.
Know before you buy
The 18-volt lithium-ion battery provides up to 4 hours of continuous spraying, which equates to approximately 50 gallons of liquid on a full charge.
Unlike manual pump sprayers, this unit maintains a consistent 40 PSI throughout the duration of the battery life, ensuring uniform application without the need for constant adjustments.
The sprayer comes with four versatile nozzle options: a brass adjustable nozzle, two flat fan nozzles for broader coverage, and a foaming nozzle for specialized applications.
Yes, the unit is designed with a padded shoulder harness to help distribute the weight of the 4-gallon tank, making it significantly more comfortable for long sessions compared to standard strap systems.
The 18-volt battery requires approximately 3.5 hours to reach a full charge from empty.
The unit features a powder-coated steel frame designed for longevity and a robust 4-gallon tank, making it well-suited for the demanding conditions of forestry and professional landscape maintenance.
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$206