Best Gas Weed Eaters: 4-Cycle Models Compared

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People searching for a gas weed eater usually want to cut edges, fence lines and rough ground that a mower cannot reach. The six trimmers below are all electric, either battery powered or corded, so none of them has an engine. Before comparing models, sort them by what actually ships in the box. Some are complete kits with a battery and charger, while others sell the bare tool and leave the rest to you. That difference changes both the real cost and the setup time, so it comes first.

Next, look at the figures that decide whether a trimmer will feel manageable on your lawn: power source, cutting width, overall weight and how the line feeds. Where a model does not give one of these figures, mark it as unknown rather than guessing. Check the dimensions against your storage space too, since a long shaft that fits a garage wall may not fit a shed corner.

At a glance: the 6 listed picks, by their own spec fields

Pick	Power source	Weight	Cutting width	Battery/charger included?
BLACK+DECKER 2-in-1 (6.5-Amp)	Corded Electric	6.3 lbs	14 inches	N/A — corded, needs outlet
21V Cordless String Trimmer & Edger	Battery Powered	6.2 lbs	12 inches	Yes — 2.5Ah battery + fast charger named in title
Worx WG163.9 20V 2-in-1	Battery Powered	4.6 lbs	12 inches	Listing suggests it may ship without battery/charger — verify
Greenworks 24V Trimmer & Blower Combo	Battery Powered	Not stated	12 inches	Title mentions 2.0Ah battery, but listing text suggests it may ship without — verify
HEINPRO (DeWalt 20V MAX compatible)	Battery Powered	4.2 lbs — lightest	12 inches	No — explicitly battery and charger not included
ALSO GO 21V Wheeled Trimmer	Battery Powered	Not stated	6 inches — narrowest	Not stated in this excerpt

Specs are from each product’s Amazon listing, checked 2026-10-10. None of these six picks is a Ryobi, a 4-cycle engine, or the S430 model named in this guide’s title — the listed options are corded or battery-powered string trimmers from BLACK+DECKER, Worx, Greenworks, HEINPRO, and others. Confirm battery and charger inclusion on the current listing before buying.

Quick answer

Choose the BLACK+DECKER if you have an outlet within reach and want a corded trimmer with a 14 inch cutting width. Choose the RAXONE if you want a 21V cordless trimmer whose title names a 2.5Ah battery and fast charger. Choose the WORX if you want a battery-powered 12 inch 2-in-1 trimmer and edger at 4.6 pounds. The Greenworks, HEINPRO and ALSO GO fit narrower situations: the Greenworks comes as a trimmer and blower combo, the HEINPRO is listed without a battery or charger and is compatible with Dewalt 20V MAX batteries, and the ALSO GO has wheels and a 6 inch cutting width. Confirm every battery-and-charger line, because several listings distinguish a complete kit from a tool-only purchase. A feature a listing does not give is unknown, not a promised capability.

What matters for this gas weed eater search

Power source and platform

Start with the power-source field. It reads Corded Electric for the BLACK+DECKER and Battery Powered for the other five. A cordless trimmer that names a battery family, such as the HEINPRO with its Dewalt 20V MAX compatibility, is a different purchase from a corded model or from a package that leaves the battery out. Settle this before anything else.

Working output

Use the cutting width each listing gives. The BLACK+DECKER lists 14 inches, the RAXONE, WORX, Greenworks and HEINPRO list 12 inches, and the ALSO GO lists 6 inches. Cutting width is a different measure from the 270 CFM airflow of the blower that comes with the Greenworks, so do not combine the two into one score.

What arrives in the box

Read the included-components lines and every tool-only warning. The RAXONE title names a 2.5Ah battery and fast charger, the Greenworks title mentions a 2.0 Ah battery, and the HEINPRO lists Battery and Charger not Included. A statement that a battery is compatible does not mean one is supplied.

Weight and dimensions

Compare item weight, which runs from 4.2 pounds on the HEINPRO to 6.3 pounds on the BLACK+DECKER where a listing gives one, and overall size with how you carry and store the tool. The Greenworks lists 48.97 inches long by 10.27 inches wide and the ALSO GO lists 41 inches long by 6.7 inches wide. The other four listings give no length or width, so check the product page.

Trimmers that fit the search

Best overall match

The BLACK+DECKER is the corded trimmer here. Its listing gives Orange, Black for color, 6.3 pounds for item weight and 14 inches for cutting width. It is described as a 2 in 1 trimmer and edger with a wheeled edge guide that you rotate to convert from trimmer to wheeled edger, and the automatic feed spool is said to remove bumping for hassle-free line feeding. Choose it if you have an outlet within reach and want the widest cutting path in this guide; skip it if you need to trim away from an outlet.

Best complete cordless kit

The RAXONE is a 21V cordless trimmer and edger. Its listing gives Crimson for color, 6.2 pounds for item weight and 12 inches for cutting width. The bullets describe an upgraded high-speed motor reaching 9500 RPM and a 12-inch cutting path that covers more area in less time, and the title names a 2.5Ah battery and fast charger. Choose it if you want a cordless set that is ready to charge and use; skip it if you want one of the lighter trimmers, since it weighs 6.2 pounds.

Best light 2-in-1

The WORX is a 20V cordless 2-in-1 string trimmer and electric lawn edger, model WG163.9. Its listing gives Black and Orange for color, 4.6 pounds for item weight and 12 inches for cutting width. The bullets say it converts to an edger in seconds and has a Command Feed spool system for instant line feeding. The listing text suggests it may be sold without a battery and charger, so check the package. Choose it if you want a light 12 inch trimmer and edger; skip it if you need a battery included.

Best trimmer and blower combo

The Greenworks is a 24V trimmer and blower combo. Its listing gives Green for color, 12 inches for cutting width and 48.97 inches long by 10.27 inches wide for product dimensions. The bullets describe a lawn care kit with a 24V 12 inch brushless string trimmer and a 270 CFM brushless leaf blower for trimming and clearing debris and leaves. The title mentions a 2.0 Ah battery, but the listing text suggests it may be sold without a battery and charger, so check what is in the box. Choose it if a blower next to the trimmer is useful; skip it if you want a trimmer on its own.

Best tool-only choice

The HEINPRO is the tool-only trimmer here. Its listing gives Battery Powered (Battery and Charger not Included) for power source, Black (Battery and Charger not Included) for color, 4.2 pounds for item weight and 12 inches for cutting width. The bullets say it is compatible with DeWALT 20V MAX lithium-ion batteries, so it adds to a tool kit without buying extra batteries, and they repeat that the battery and charger are not included. Choose it if you already own Dewalt 20V MAX batteries; skip it if you need a battery and charger in the same box.

Best wheeled trimmer

The ALSO GO is a 21V electric weed wacker with wheels. Its listing gives Bright Red for color, 6 inches for cutting width and 41 inches long by 6.7 inches wide for product dimensions. The bullets describe a 3-in-1 cutting system with three quick-change blades: a 6-inch saw blade for thick branches, stainless steel blades for tough weeds and reeds, and plastic blades for gentle lawn mowing. The telescoping pole adjusts from 92cm to 122cm to match your height. Choose it if you want wheels and an adjustable pole; skip it if you want a wide 12 inch cutting path.

How to choose among these string trimmer configurations

First, eliminate any trimmer whose power source does not match your yard or your battery platform. Next, separate kits from bare tools by reading the included-components lines. Then compare like with like: cutting width against cutting width and weight against weight. Finally, use size to settle a close call, such as how the 48.97 inch Greenworks fits your storage space compared with the 41 inch ALSO GO. A big number on an unrelated specification should not steer this gas weed eater search.

Fit check: compare two listed string trimmer figures

Consider a buyer choosing between the BLACK+DECKER at 6.3 pounds and the RAXONE at 6.2 pounds. Subtracting step by step gives 6.3 pounds – 6.2 pounds = 0.1 pounds, and adding back confirms it: 6.2 pounds + 0.1 pounds = 6.3 pounds. A second check agrees: 6.3 pounds – 0.1 pounds = 6.2 pounds. A gap of 0.1 pounds is too small to matter in the hand, so that choice should rest on corded versus battery power. The gap between the 6.3 pounds of the BLACK+DECKER and the 4.2 pounds of the HEINPRO is 2.1 pounds, because 6.3 – 4.2 = 2.1, and that is the weight difference worth weighing.

Common gas weed eater mistakes

1. Treating a compatibility statement as proof that a battery and charger are included. The HEINPRO is compatible with DeWALT 20V MAX batteries and still lists Battery and Charger not Included.
2. Comparing unlike output measures as though they describe the same yard task. The 270 CFM airflow of the Greenworks blower says nothing about its 12 inch trimmer cutting path.
3. Ignoring a tool-only warning while focusing on a voltage or cutting-width headline. A 20V or 24V label does not mean a battery ships with the tool.
4. Assuming a missing weight or dimension has a favorable value. The Greenworks and ALSO GO listings give no item weight, so check before you buy.
5. Letting one high specification outweigh the package contents and platform. A wide cutting path does not help if the battery you need is not in the box.

Related yard-tool guides

Compare this string trimmer choice with Ryobi 40 Volt Weed Eater Reviews when the adjacent task overlaps. The Ryobi 18 Volt Lithium Weed Eater guide helps if you are weighing a second battery platform, while Ryobi One Plus Weed Eater String addresses weed eater string.

Why mower rules do not define this string trimmer

Federal rules define a walk-behind power lawn mower as a grass-cutting machine with a minimum cutting width of 12 in (305 mm) that uses an engine or motor. A string trimmer is a different equipment category, so this gas weed eater guide does not transfer mower-specific performance claims to these products.

FAQ

Does this gas weed eater shortlist include batteries and chargers?

Only the RAXONE title names a battery and charger, a 2.5Ah battery and fast charger. The HEINPRO states that the battery and charger are not included, and the WORX and Greenworks listings suggest they may be sold without them. The BLACK+DECKER is corded and needs neither. Read the included-components line on the current listing before ordering.

How should I compare voltage for gas weed eater?

Use the voltage as each listing presents it: 21V for the RAXONE and ALSO GO, 20V for the WORX and 24V for the Greenworks. Voltage is not a performance score, so first confirm that the battery platform fits equipment you own, then compare cutting width and package contents.

Which gas weed eater is easier to store?

The one whose size fits your space. The Greenworks lists 48.97 inches long by 10.27 inches wide and the ALSO GO lists 41 inches long by 6.7 inches wide. The other listings give no length or width here, so check the current product page rather than guessing size from a picture.

Can I choose a gas weed eater by weight alone?

Weight can separate similar trimmers, from 4.2 pounds on the HEINPRO to 6.3 pounds on the BLACK+DECKER, but it does not replace the power-source and package checks. A battery changes what you carry, and the listings here do not say whether the stated weight includes it, so confirm that before deciding.

What if two gas weed eater specifications conflict?

Do not rely on either figure. Check the current product page and the manufacturer's manual for the exact configuration. A conflict between a title, a bullet and a specification field can change compatibility or fit, so resolve it before choosing a trimmer.

Is a tool-only gas weed eater sensible?

A tool-only trimmer such as the HEINPRO makes sense when you already own the exact compatible battery and charger, here Dewalt 20V MAX. It is a poor match when your battery platform differs or you want a complete package.

Which working figure matters most for this gas weed eater search?

Use the figure tied to your job. For string trimmers that is mainly cutting width: 14 inches on the BLACK+DECKER, 12 inches on four of the models and 6 inches on the ALSO GO. Compare the same measure across models, and do not rank an unrelated figure, such as blower airflow, against it.

Bottom line

Choose the BLACK+DECKER if you have an outlet and want the widest cut here, the RAXONE for a complete cordless kit, and the WORX for a light 12 inch trimmer and edger. Choose the HEINPRO only if you own Dewalt 20V MAX batteries, the Greenworks if you also want a blower, and the ALSO GO for wheels and a telescoping pole. Skip any trimmer whose battery, charger or compatibility line is still unclear on the current listing.

Sources

• Federal walk-behind mower definition: clarifies that mower-specific rules should not be applied to a different yard-tool category.