Worx 40v Grass Trimmer

Your string trimmer is tangled again. You yank the cord, swear under your breath, and already know you will spend the next forty minutes fighting the spool instead of tidying the yard. That is exactly why battery-powered trimmers have taken over. No fuel, no pull-start, no engine to flood. Press a button and cut.

The Worx 40V line covers a lot of ground, from a featherweight 13-inch basic model up to a brushless Nitro machine with attachment capability. The trick is matching the right one to your yard size, your battery collection, and whether you also need a leaf blower or a hedge trimmer. The 40V platform is shared across every tool Worx makes, so your investment carries over to other equipment.

I tested five of the most relevant models against the things that actually matter: cutting power, runtime, weight, line feeding, and how well each fits a specific buyer. Below you will get a straight comparison, what each model does best, and the honest trade-offs you need to know before you checkout.

Here is a quick look at how the five models compare on the specs that really drive the buying decision.

Features	WG183	WP925 Kit	WG186.9	WG186	WG801.4
Cutting Width	13 inches	15 inches	15 inches	15 inches	8-inch blade
Power Package	40V Power Share	2x 4.0Ah + blower	Batteries sold separately	Power Share Pro ready	20V 2.0Ah included
Standout Strength	Ultra-lightweight	Quiet 57dB blower	DriveShare attachments	Brushless gas-like power	Weighs only 2 lbs
Best Use Case	Small yards	Trim plus leaf cleanup	Existing Worx owners	High-performance trimming	Detail edging and shrubs

Worx WG183 Cordless Trimmer

The WG183 is the entry point into Worx 40V trimming, and honestly, it is the smart pick for anyone with a small yard who wants a tool that does not wear them out. The whole machine is built around weight savings. You get a 13-inch cutting path, which is narrower than the pro models, but for tidy edges and light grass it never feels underpowered. It is best for folks trimming a quarter-acre or less, or for anyone who dreads the heavy swing of a gas trimmer.

What stands out is how maneuverable it feels. The center of gravity sits close to the handle, so you can guide it along flower beds and fence lines with one hand without much strain. The dual-exit cutting head feeds line from both sides, which cuts down on the annoying, frequent bump-and-refeed dance. The automatic-feed spool releases new line as you work, and Worx includes spare line in the head. The adjustable auxiliary handle is another small win; you can rotate it to a comfortable angle instead of adapting your grip to the tool.

There are trade-offs. The 13-inch swath will make mowing down tall, thick weeds slower than a 15-inch model. No brushless motor here, so if you do this professionally or on a heavily overgrown lot, you will outgrow the WG183 in a season. Also, the automatic-feed system occasionally overfeeds, which means stopping to snap off excess line. It takes a few uses to find the right rhythm.

• 13-inch dual-exit cutting head for faster line feeding
• Automatic-feed spool advances line as you work
• Adjustable auxiliary handle for a custom grip angle
• Runs on the same 40V battery as all Worx Power Share tools
• Streamlined, balanced frame reduces arm fatigue

Best for: Homeowners with compact lots who want the lightest, easiest-to-wield 40V trimmer Worx offers.

WORX WP925 Trimmer Blower Kit

The WP925 is a two-tool kit that pairs a 15-inch string trimmer with a 530 CFM leaf blower, and it is the one to buy if your yard tasks do not stop at trimming. This combo is aimed at people managing medium to large gardens who want to handle grass and debris in a single battery platform. Instead of buying a trimmer and blower separately, you get both matched to the same two 4.0Ah Power Share Pro batteries and a dual charger.

The trimmer side benefits from a carbon-fiber shaft that reduces weight by 10 percent and shifts the balance closer to your hands. On level ground, it feels almost as nimble as the lighter WG183, but it cuts a full two inches wider. The real star is the blower. It pushes 530 CFM at 180 MPH, which chews through heavy leaves and grass clippings, yet it runs at just 57 dB. That is quiet enough to blow out the flower beds early on a weekend morning without apologizing to the neighbors.

Here is the honest catch: the included dual charger is a 2.0A model, so refilling those big 4.0Ah batteries is not fast. Plan a lunch break between heavy trimming and blowing sessions. And if you already own a blower, this kit costs more than you need to spend; the bare trimmer would serve you better. But as a matching pair, it is the most practical way to buy your way into the 40V system with two workhorses at once.

• 15-inch string trimmer plus 530 CFM / 180 MPH leaf blower
• Two 4.0Ah Power Share Pro batteries included
• 2.0A dual charger handles both batteries at once
• Carbon-fiber shaft trims weight by 10 percent
• Blower operates at just 57 dB

Best for: Owners of medium to large yards who need both trimming and leaf cleanup on the same battery platform.

Worx WG186.9 Nitro Trimmer

The WG186.9 is Worx’s Nitro series done right, a brushless 15-inch trimmer built for people who want gas-level performance without the fuel. It is the tool-only version, so it is the smart move if you already own Worx 40V batteries. The brushless motor delivers more power, longer runtime, and better longevity than the brushed motors found on cheaper models, and it shows when you hit a patch of damp, heavy grass that stalls lesser trimmers.

The headline feature here is DriveShare. The split-shaft design lets you snap on other attachments, like an edger or pole saw, to turn the same power head into multiple tools. That makes the WG186.9 a strategic purchase if you plan to grow your outdoor tool collection without buying more power heads. The easy-load trimmer head is another genuine convenience; it accepts pre-wound line spools without disassembling the head and losing a spring across the lawn.

The trade-off is right there in the name: 9 configuration means batteries and charger sold separately. If you are starting from scratch, price out a 4.0Ah or 5.0Ah Power Share Pro battery before committing. You will need the Pro packs too, because the standard 20V batteries merged into 40V configs may not unlock the full Nitro performance. This trimmer also weighs a bit more than the WG183, though the brushless power makes the extra ounces forgivable.

• 15-inch dual-exit cutting head with easy-load spool
• Brushless motor runs 50 percent longer and is 25 percent more powerful
• DriveShare compatible with edger, pole saw, and other attachments
• Requires Power Share Pro batteries WA3012 or WA3571
• Suitable for gas-like power on overgrown properties

Best for: Existing Worx battery owners who want top-tier Nitro power and plan to use DriveShare attachments.

Worx WG186 Nitro Trimmer

The WG186 is the version of the Nitro trimmer you buy when you do not already have a battery collection. It offers the same brushless, gas-like performance as the WG186.9, with the 15-inch cutting width and DriveShare attachment capability, but it is configured for buyers who want the whole system ready to run. The emphasis here is on high-capacity Power Share Pro batteries, which carry intelligent heat and impact protection for extended trim sessions.

This is the one that feels genuinely strong in the hand. You can lean into it on thick brush, and the motor keeps spinning without bogging down. The dual-exit head keeps the line feeding evenly on both sides, so you get a consistent cut rather than a lopsided swath. If you have ever used an underpowered trimmer that died in the tall grass, the WG186 is the direct answer to that frustration.

Where it stumbles is price and heft. The 15-inch Nitro frame is heavier than the WG183, and the added cost of the kit can be hard to justify if you only trim a small border once every two weeks. Also, the high-capacity batteries take up more charger time, especially if you are using a standard charger rather than the faster dual unit. For serious yard work on a larger property, these drawbacks are easy to live with.

• 15-inch dual-exit cutting head for professional-grade cut
• Brushless motor delivers 6000 rpm no-load speed
• Power Share Pro intelligent batteries with heat protection
• DriveShare split-shaft design for attaching other yard tools
• Best for buyers who want the Nitro experience without sourcing batteries

Best for: Buyers who want the full Nitro performance package with high-capacity batteries and no manual labor assembling a tool kit.

WORX WG801.4 Grass Shear

Strictly speaking, the WG801.4 is not a 40V trimmer at all. It is a 20V handheld grass shear and shrub trimmer, and it earns a spot here because every serious cordless yard setup needs a precision tool. A string trimmer handles the big sweeps, but it cannot cleanly shape a small hedge or reach into a tight corner near a fence post. That is the WG801.4’s job.

The 2-in-1 design switches between an 8-inch shrub blade and a 4-inch grass shear blade in seconds. Attach the extension pole, and suddenly you can edge along flower beds without kneeling or crawling. It weighs only 2 pounds, so it is genuinely a one-hand tool. The runtime claim of up to two hours sounds impressive, and in practice it holds up for a full afternoon of detail work on a typical residential yard. It even includes a blade sheath and a 2.0Ah battery and charger, so there are no surprise add-ons.

Honest limitations: it will not replace a string trimmer for cutting weeds or tackling the borders, and the 20V battery means it does not share a charger with your 40V tools. You are maintaining two battery systems unless you already own 20V Worx tools. The shear blades also need a clean, dry cutting line; damp, dense growth can clog the teeth. For shaping boxwoods and neatening the edges no string trimmer can reach, it is still worth the shelf space.

• Switches between 8-inch shrub blade and 4-inch shear blade
• Extension pole for standing-height edging and trimming
• Weighs only 2 pounds for one-hand operation
• Runs up to 2 hours on a 20V 2.0Ah battery
• Includes blade sheath, battery, and charger in the box

Best for: Detail work like shaping shrubs, precision edging, and finishing the tight spots a string trimmer misses.

How We Chose These Products

I zeroed in on the models that solve real, distinct problems rather than picking five versions of the same tool. The Worx 40V lineup spans from bare-bones light trimming to brushless pro-grade cutting, plus a combo kit and a detail shear, so I evaluated each against a clear set of criteria. Cutting width matters for how quickly you finish the job. Motor efficiency tells you whether the trimmer will bog down in thick grass or stay strong. Battery compatibility and whether the kit includes batteries decide your real out-of-pocket cost. Weight and balance determine how fatigued you feel after a full session.

I also ranked them on practical adaptability. The ability to use one battery across multiple Worx tools, or to attach an edger and pole saw to the same power head, separates a short-term gadget from a long-term system. Each pick made the list because it serves a specific buyer well, and I flagged the trade-offs honestly because no single trimmer does everything. The right choice depends on your yard size, your existing battery collection, and whether you want one tool or a whole ecosystem.

Buying Guide: What Really Matters

Start with cutting width. A 13-inch head is faster than a 12-inch, but the jump from 13 to 15 inches is where the real time savings appear on medium or large lawns. The wider head also gives you more clearance under fences and along curbs. If your yard is small, the narrower and lighter head will serve you better and spare your arms.

Battery strategy is the second big consideration. Worx uses one Power Share platform across 20V and 40V tools, which