Best Ryobi ONE+ String Trimmers Compared

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A string trimmer is best judged by the job it must handle, such as edging along walks, trimming around fences or clearing a small patch. If you already own Dewalt 20V MAX batteries, a bare tool such as the HEINPRO may be the sensible buy, so check battery compatibility first. If you do not, confirm the kit includes a battery and charger before you compare anything else.

Next, compare the stated weight, shaft design and cutting head, and whether a guard or attachments are included. A lighter trimmer is easier for long edging sessions, while a longer shaft reaches under fences but adds balance strain. Where a listing leaves out a weight or shaft figure, mark the gap and confirm it with the seller before ordering.

At a glance: the six trimmers compared

Trimmer	Brand / platform	Power	Weight	Cutting width
BLACK+DECKER 14-Inch	Black+Decker	Corded, 6.5 Amp	6.3 lb	14 in
21V Cordless Trimmer	Unbranded/generic — 2.5Ah battery and charger included	Battery powered	6.2 lb	Not stated as a separate field
Worx WG163.9	Worx (20V)	Battery powered — may ship without battery/charger	4.6 lb	12 in (title only, no separate field)
Greenworks 24V Combo	Greenworks	Battery powered — may ship without battery/charger; 2.0Ah named in title	Not stated	12 in
HEINPRO	Compatible with DeWalt 20V MAX — not DeWalt-branded	Battery powered, tool only	4.2 lb (lightest of the six)	Not stated
ALSO GO 21V Wheeled	ALSO GO	Battery powered	Not stated	6 in (narrowest of the six)

Figures are exactly as stated in each listing, checked 2026-10-10. Important: despite this guide’s title, none of the six picks is a Ryobi ONE+ product — the brands covered are Black+Decker, Worx, Greenworks, HEINPRO (DeWalt-compatible), and ALSO GO. If you specifically need Ryobi ONE+ platform compatibility, none of these six trimmers provides it.

Quick answer

Start with the BLACK+DECKER if you want a corded trimmer with a 14 inch cutting width and have an outlet within reach. The 21V cordless trimmer is the alternative when you want a battery-powered set, since its title names a 2.5Ah battery and fast charger. Use the Worx, Greenworks, HEINPRO and ALSO GO for narrower situations shown by their weight, cutting width or included components. Do not transfer a capability from one trimmer to another. Before choosing, write down the one requirement that would make the trimmer unusable if missed, such as the battery platform or the cutting width, and compare it against the exact kit you select. If the page does not give the limit you need, ask the manufacturer or skip that trimmer.

What matters when buying a string trimmer

Exact product type

The title and feature lines should describe the job directly. A trimmer and edger combination, a trimmer and blower combo and a trimmer on wheels are different products, so keep your search intent intact and reject a variant whose own wording changes the product type.

Fit and operating context

Fit is the first pass or fail test. Match the power source, voltage platform, cutting width and included components to the job. The BLACK+DECKER is corded, the HEINPRO is built for Dewalt 20V MAX batteries, and the other four are battery powered. Do not assume battery compatibility, runtime or reach when the listing does not give it.

Controls and adjustment

A feature matters only when it changes daily use. The BLACK+DECKER title mentions Auto Feed, and the ALSO GO title mentions wheels. Consider which of these you would use, and prefer explicit feature wording over a guess from a photograph.

Installation and included pieces

Separate the trimmer from what arrives with it. The 21V cordless trimmer title names a 2.5Ah battery and fast charger, the Greenworks title names a 2.0 Ah battery, and the HEINPRO lists Battery and Charger not Included. Count a battery, charger, guard or line only when the exact variant includes it.

Stated limits

Missing information is a real limit. None of the six trimmers here gives a battery runtime in the details above, and several give no weight or dimensions. Decide whether that gap affects your use; if it does, choose a trimmer whose listing is more explicit.

Related guides

Use this nearby string guide for the line side of the job. Compare this 18V battery trimmer guide before committing to a battery platform. Review this 40 volt weed eater guide if you are weighing a larger battery system. Each guide answers a different purchase question, so its products should not be treated as interchangeable.

The six string trimmers

BLACK+DECKER corded trimmer: best overall

The BLACK+DECKER is the corded trimmer. Its power source entry states Corded Electric, its color entry states Orange, Black and its item weight entry states 6.3 pounds. The title describes a 14-Inch 2 in 1 string trimmer and lawn edger with Auto Feed and a powerful 6.5-Amp rating. Choose it if you have an outlet within reach and want a wide cutting path. Skip it if you need cordless freedom or a battery you already own, since it has no battery.

21V cordless trimmer: best cordless kit

The 21V cordless trimmer is the battery-powered set. Its power source entry states Battery Powered, its color entry states Crimson and its item weight entry states 6.2 pounds. The title names a 21V cordless string trimmer and edger with a 2.5Ah battery and fast charger. Choose it if you want a cordless trimmer you can charge and use straight away. Skip it if you want one of the lighter trimmers, since it weighs 6.2 pounds.

Worx 2-in-1 trimmer: best light 2-in-1

The Worx is a 20V cordless 2-in-1 string trimmer and electric lawn edger, model WG163.9, with a 12 inch size in its title. Its power source entry states Battery Powered, its color entry states Black and Orange and its item weight entry states 4.6 pounds. The listing text suggests it may be sold without a battery and charger, so check the package. Choose it if you want a light 2-in-1 trimmer and edger. Skip it if you need a battery included.

Greenworks trimmer and blower: best combo

The Greenworks is a 24V trimmer and blower combo. Its power source entry states Battery Powered, its color entry states Green and its cutting width entry states 12 inches. The title names a 12 in string trimmer with a 270 CFM blower and 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 alongside the trimmer is useful. Skip it if you want a trimmer on its own.

HEINPRO tool-only trimmer: best for Dewalt owners

The HEINPRO is the tool-only trimmer. Its power source entry states Battery Powered (Battery and Charger not Included), its color entry states Black (Battery and Charger not Included) and its item weight entry states 4.2 pounds. The title says it is compatible with Dewalt 20V MAX batteries. Choose it if you already own those batteries and a charger. Skip it if you need them in the same box.

ALSO GO wheeled trimmer: best wheeled format

The ALSO GO is a 21V electric weed wacker with wheels. Its power source entry states Battery Powered, its color entry states Bright Red and its cutting width entry states 6 inches. Choose it if you want a wheeled trimmer. Skip it if you want a wide cutting path, since 6 inches is the narrowest cutting width here.

Measured details worth comparing

The BLACK+DECKER lists an item weight of 6.3 pounds and a cutting width of 14 inches. Its speed field gives 8000 rpm and its manufacturer warranty description reads 2 Year. The title describes a 2 in 1 trimmer and edger, and a feature line gives 6.5-Amp as the rating. Another feature line repeats the 14 in cutting path, so it is not a second measurement. The 21V cordless trimmer lists an item weight of 6.2 pounds and a cutting width of 12 inches. Its speed field gives 9500 rpm, and its item highlights name a 12 Inch cutting path, which repeats the same width. Its size field reads 2.5 Ah, a detail that applies only to that trimmer.

Compare only like attributes. A 21V or 24V label does not establish runtime, the 270 CFM of the Greenworks blower does not establish cutting reach, and an overall dimension does not establish cutting width. Use the unit tied to the requirement that controls your job.

Three ways to narrow the shortlist

When space or access is tight

Define the work area and access path before comparing cutting width. The ALSO GO has a 6 inch cutting width and wheels, while the BLACK+DECKER cuts 14 inches but is corded. Account for fences, corners, cord routing and the movement needed during operation. A trimmer can match the task name yet remain awkward for the actual area, so favor the one whose size and controls are explicit.

When the task changes often

Prioritize clearly stated compatibility and the ability to switch jobs. The BLACK+DECKER, the Worx and the 21V cordless trimmer are all described as trimmer and edger combinations, so one tool covers both tasks. Extra features with no defined use should not outweigh a missing essential specification.

When one requirement is nonnegotiable

Use a pass or fail screen before comparing secondary details. That requirement might be a power source, a battery platform, a cutting width or an included battery. Eliminate every trimmer that does not meet it, then compare convenience features among the survivors.

Narrowing a shortlist

Narrow the six trimmers in two passes. In the first pass, check what ships in the box: the HEINPRO lists Battery and Charger not Included, while the 21V cordless trimmer's title names a 2.5Ah battery and a fast charger. In the second pass, compare working figures such as cutting width, which runs from 6 inches on the ALSO GO to 14 inches on the BLACK+DECKER, and weight, which runs from 4.2 pounds on the HEINPRO to 6.3 pounds on the BLACK+DECKER among the trimmers that list one. The Greenworks lists a 12 inches cutting width and the Worx lists 4.6 pounds. Fit and included pieces come first because a lighter or wider trimmer does not help if the battery platform is wrong.

Common mistakes to avoid

Treating the category name as proof of fit

A broad label can hide differences. Two trimmers can both be called cordless and still use different batteries. Use the exact variant details.

Comparing unlike measurements

Keep every number with its unit and field. Do not rank a weight against a cutting width, or the 270 CFM of a blower against the 12 inches of a trimmer.

Borrowing a feature from another trimmer

Each trimmer stands on its own wording. The wheeled edge guide on the BLACK+DECKER or the Dewalt compatibility of the HEINPRO does not carry across the table.

Ignoring a missing limit

Silence is not confirmation. If your use depends on a runtime, a compatibility statement or an included battery that the listing does not mention, pause the purchase.

Forgetting the selected variant

Changing a size, pack or color can also change specifications and included pieces. Review the final selection immediately before ordering.

Use and care boundaries

Follow the manufacturer’s instructions for assembly, guards, batteries, charging, cords, line, inspection and storage. Wear the protective equipment named in the manual and keep bystanders away from the work area. Do not infer weather resistance or battery interchangeability. Disconnect the power source, whether the cord or the battery, before clearing a jam or changing the line. If a guard, cord, battery enclosure or line head is damaged, stop and follow the maker’s service guidance.

FAQ

What should I check first when comparing string trimmers?

Start with the requirement that would make a trimmer unusable: power source, battery platform, cutting width or an included battery. Remove any trimmer that does not clearly meet it. Then compare convenience details among the rest.

Can I rely on the product title alone?

No. Use the title to confirm the basic type, then read the selected variant’s specifications. The HEINPRO title says Compatible with Dewalt 20V MAX Battery, but its power source entry says Battery and Charger not Included, so the title alone does not tell you what is in the box.

How should I handle a missing specification?

Treat it as unknown. If that fact controls compatibility or fit, such as a battery platform or a cutting width, do not infer it from photos or another model. Choose a clearer listing or ask the manufacturer.

Are all measurements directly comparable?

Only measurements describing the same attribute in compatible units should be compared. Keep weight, cutting width and speed separate, so a 14 inch cutting width is not set against a 6.3 pound weight or an 8000 rpm motor speed.

Why does the exact variant matter?

A kit, voltage or color selection can change specifications or included pieces. Reopen the details after choosing the final variant, especially for trimmers such as the HEINPRO where the battery and charger are not included.

When should I skip a trimmer?

Skip it when an essential requirement is missing, contradicted or attached only to a different variant. A longer feature list cannot make up for a failed pass or fail check.

How many trimmers should reach the final comparison?

Keep only the trimmers that pass your essential requirement. A short comparison of viable trimmers is more useful than ranking all six despite unresolved battery or compatibility questions.

Bottom line

Choose the BLACK+DECKER if you have an outlet and want a 14 inch corded trimmer, or the 21V cordless trimmer for a battery-powered set with a 2.5Ah battery and fast charger. Choose another trimmer only when its own power source, cutting width or included pieces fit better, such as the HEINPRO for Dewalt 20V MAX owners. For a string trimmer, work in this order: the power source and battery platform first, the cutting width and weight second, convenience third. Reject any trimmer that requires you to invent a critical specification.

Sources

• Safety and use guidance: general guidance used for tool selection and operating boundaries.