4-Gallon Backpack Sprayer

About this product

OGERY's battery powered backpack sprayer puts an electric pump and a 21V battery on your back, so you can cover a lawn or a fence line without stopping to work a pump handle. The tank holds 4.2 gallons (16L) and is semi-translucent with gallon markings, so you can see at a glance how much mix is left. Thickened, adjustable shoulder straps spread the load during longer sessions.

Two wands for two kinds of liquid

The kit includes two wands, and using each one for its intended liquid helps the sprayer last. The telescopic stainless steel wand is for water and neutral solutions. The plastic wand handles diluted acids and alkalis in the pH 4 to 9 range.

Picking a nozzle

Six nozzles come in the box:

Two single-head nozzles for spot-treating weeds
A fan nozzle for wide, even coverage across a lawn
A stream nozzle for a long jet toward high branches
An F-type dual nozzle with an adjustable angle for rows
A windproof nozzle meant to cut drift on breezy days

The pressure knob runs from a gentle mist for delicate plants up to a strong jet for tough surfaces, and OGERY rates the flow at 3.1 L/min.

Battery and charging

A full charge on the 21V 2.6Ah lithium battery is rated for about 90 minutes of continuous spraying, and the included fast charger refills it in about 2.5 hours. When voltage drops too low, the sprayer shuts itself off to protect the battery from over-discharge. If you already own Makita 18V batteries, OGERY lists them as compatible, which gives you a ready spare for big jobs.

Who it suits

It suits a season-long yard list, from spring lawn feeding and summer pest control to fall weeding along the driveway and patio. If the same weekend also means shaping shrubs and edging the lawn, the 2-in-1 Hedge & Grass Shears is the other yard tool in the OGERY range.

Before you order, and after each use

The Shop now button opens the blue version. After every job, flush the tank, pump, and the wand you used with clean water, and keep anything outside the neutral range off the stainless wand.

Who it's for

Shoppers comparing OGERY options in OGERY Backpack Sprayers who want the main specs of 4-Gallon Backpack Sprayer in one place.

Yard and garden shoppers — this is part of OGERY's outdoor range but is not tent-sleep gear.

Before you order, match the runtime, battery and accessories of the option in your cart to the size of the job.

How it differs in the lineup

It is currently the only pick in OGERY Backpack Sprayers.

For the key numbers on the 4-Gallon Backpack Sprayer and OGERY's other yard and kids' gear, read our OGERY review.

Key specs

4.2-gallon (16L) semi-translucent tank with gallon markings.
21V 2.6Ah lithium battery with a fast charger in the box.
Separate stainless steel and plastic wands.
Six nozzles plus an adjustable pressure knob.

Pros

The second wand keeps mild acids and alkalis away from the stainless wand.
Low-voltage auto shutoff helps protect the battery.
Works with Makita 18V batteries you may already own.

Cons / watch-outs

A full 16L tank is heavy to carry, so fill only what the job needs.
The plastic wand is meant for pH 4 to 9 mixes; stronger chemicals fall outside its range.