Neptune 15L Backpack Sprayer – Manual & Battery-Powered Options

Durable, versatile, and built for comfort—perfect for pest control, fertilizing, and large-scale garden care.

The Neptune 15L Backpack Sprayer is designed for reliability and ease of use, whether you prefer a manual pump sprayer or the convenience of a battery-powered model. Its 4-gallon heavy-duty tank minimizes refills on bigger jobs, while the ergonomic harness system with padded straps keeps you comfortable during extended use.

Choose the version that fits your needs:

• Manual sprayer with adjustable pressure (1–3 bar) for traditional, precise spraying.

• Electric sprayer with a universal adapter, compatible with DeWalt or Milwaukee batteries (battery not included), delivering hours of hands-free, consistent spraying.

Key Features

• 15L (4-gallon) tank capacity – Large enough for bigger jobs with fewer refills.

• Two versions available – Manual pump or electric (works with DeWalt/Milwaukee batteries).

• Adjustable fiberglass wand – Extends 24″ to 47″ for flexible spraying angles.

• Herbicide shield attachment included – For safe and targeted application.

• Heavy-duty tank with 5-year guarantee – Built for long-term durability.

• Pressure regulator (manual version) – Adjustable from 1 to 3 bar for precision control.

• Visible fluid strip – Easily monitor liquid levels as you work.

• Ergonomic padded harness – Designed for comfort during extended use.

Product Details

• Capacity: 15L / 4 gallons

• Wand: Fiberglass, extendable 24″–47″

• Runtime (electric version): ~9–10 hours with 5-amp battery

• Battery compatibility: DeWalt or Milwaukee 18V (not included)

• Warranty: 5 years on tank

Why Gardeners & Pros Choose Neptune

From pest control and weed management to fertilizer and chemical application, the Neptune 15L Backpack Sprayer delivers consistent performance for both home gardeners and professional landscapers. The manual version offers control and simplicity, while the electric version provides effortless, pump-free operation—ideal for larger properties and commercial use.

Usage & Care Tips

• Electric sprayer: Fully charge your DeWalt/Milwaukee battery before use for maximum runtime.

• Manual sprayer: Prime the pump thoroughly for even pressure.

• Maintenance: Rinse after each use, especially with fertilizers or chemicals.

• Storage: Keep in a cool, dry place away from direct sunlight.

⚠️ Note: All Neptune sprayers are pressure tested before shipping. You may notice a small amount of residual water in the tank—this is normal and ensures proper function.