Ecarke Battery Backpack Sprayer — Makita 18V Compatible, 4.2‑Gallon Auto‑Mix Brushless

This cordless backpack sprayer combines a high-capacity tank, brushless motor control, and an integrated mixing system to make garden, lawn, and cleaning jobs faster and neater. Designed as a bare unit to accept Makita 18V batteries, it shows real-time voltage, protects batteries with automatic shut-off and delivers adjustable pressure from a low mist to a strong jet. Every sprayer is water-tested at the factory for leak-proof performance and ships with a set of nozzles and on-board storage.

How does the one-touch auto mixing improve prep time?

The exclusive one-touch mixing button instantly agitates liquids and soluble powders so you don't have to stir manually. That keeps concentrates fully suspended, reduces clumping and saves time when filling and applying treatments.

• Single-button mixer blends fertilizers, cleaners and concentrates uniformly.
• No separate agitation tool required; fewer spills and less mess.
• Consistent mixture means predictable spray coverage.

What kind of run-time and capacity can I expect on a charge?

The sprayer tank holds 4.2 gallons, allowing large coverage per fill while the system is engineered for efficient battery use. When paired with a typical 4.0Ah Makita 18V battery, you can expect many full-tank cycles per charge depending on pressure setting and usage patterns.

• 4.2-gallon seamless tank minimizes refills for bigger jobs.
• Digital voltage readout gives live battery status and helps avoid deep discharge.
• Auto shut-off at 2.3V prevents battery over-discharge and extends battery life.

Which spray patterns and controls are available for precise application?

A dual-mode pressure system plus an adjustable knob let you dial between a fine mist and a powerful stream for varied tasks. The stainless-steel telescopic wand reaches up to 42 inches and includes a metal connection to eliminate leaks and wobble.

• 0–100 PSI adjustable knob for misting, spot spraying, or jet cleaning.
• Trigger lock for continuous spray during long passes.
• Six interchangeable nozzles cover garden, lawn, vehicle and pet-safe applications.

How is comfort and durability addressed for extended use?

The unit is engineered to stay light and wearable while loaded: it weighs approximately 7 lbs empty and includes padded shoulder straps and waist support to spread weight evenly across your torso. Durable construction and metal wand fittings are intended to withstand the wear of regular outdoor use.

• Padded straps and waist belt for all-day comfort and balanced load distribution.
• Seamless tank design resists cracking and is easy to rinse after use.
• Factory water-test ensures leak-free performance; rinse before first use.

Who this sprayer is for: Homeowners and small-scale landscapers who need a portable, battery-driven sprayer with fast mixing and adjustable pressure will benefit most from this model. It's especially suitable for people who already own Makita 18V batteries and want a lightweight, high-capacity unit for fertilizing, weed control, cleaning, and similar outdoor tasks. If you want an easy-to-carry sprayer with reliable battery protection, multiple nozzle options, and a telescoping wand for reach, this Ecarke backpack sprayer is built to fit those needs.