Note: This article contains affiliate links. If you click on these links and make a purchase, I may earn a small commission at no extra cost to you. This helps support my research and content. Read my full affiliate disclosure here.
When your lawn and edges demand regular attention but you want to avoid shoulder and back strain, choosing a light cordless string trimmer makes a big difference. The lightest cordless string trimmer options in this guide focus on low weight without sacrificing usable runtime, cutting reach, or basic durability. You will find a short list of top contenders selected for low fatigue and reliable yard performance. This guide covers why weight matters in practical gardening, how battery choices influence real-world runtime, and the tradeoffs between cutting swath and maneuverability. Below are our top picks and the evaluation factors we used to shortlist them.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | WORX WG154 20V 10" Cordless String Trimmer & Lawn Edger (2-in-1) |  |
| Best Quality Built to a higher standard if you want something more solid | CRAFTSMAN V20 13 in. Cordless String Trimmer and Edger Kit with 4Ah Battery |  |
| Best Value The sweet spot between price and what you get | goodjob 20V Cordless String Trimmer with Dual Batteries (12" Cutting Width) |  |
| Best Budget The cheapest option that still gets the job done reliably | Generic 3‑in‑1 Cordless String Trimmer with Two Batteries and Charger |  |
| Highest Rated A top-rated pick with lots of positive feedback | ALSO GO 24V Cordless 3‑in‑1 Weed Wacker with Dual 4.0Ah Batteries |  |
| Most Popular A crowd favorite that many people choose with confidence | BLACK+DECKER 20V MAX 12-Inch Cordless String Trimmer and Edger (LST300) with Battery and Charger |  |
| Best Seller A high-volume bestseller chosen again and again | WORX WG163 20V 12" 2-in-1 Cordless String Trimmer & Edger |  |
WORX WG154 20V 10" Cordless String Trimmer & Lawn Edger (2-in-1)
| Power Source | Battery Powered |
|---|---|
| Cutting width | 10 inches |
| Speed | 2800 rpm |
| Number of Batteries | 1 (included) |
The WORX WG154 is a compact, battery-powered 2-in-1 trimmer and edger aimed at routine yard maintenance. It converts from trimmer to in-line edger by rotating the head, so you can clean borders, sidewalks and driveways without a separate tool. The included 20V 2.0Ah battery and charger make it ready to use, and the auto-feed line system reduces interruptions by advancing line with the push of a button. At about 4.2 pounds it is noticeably easy to lift and maneuver around flower beds, fences and tight spaces, and the adjustable spacer guard helps protect plants when working close to edges. Practical limitations are modest runtime compared with higher-voltage models and the 10-inch cutting width means it is best suited to small to medium yards or detail work rather than heavy overgrowth. The simple controls and PowerShare compatibility let you expand into other WORX tools if you want a matched battery platform.
Best for: Buyers who want a lightweight, easy-to-use cordless trimmer for routine edging and detail trimming around small to medium yards and landscaped areas.
Less Ideal for: Not the best choice for large properties or heavy-duty brush clearing where longer runtime, wider cutting swaths, or higher-voltage power are needed.
- 2-in-1 trimmer and edger replaces two tools for edging and trimming tasks
- Auto-feed line system reduces stops for manual line adjustments
- Very lightweight design improves maneuverability and reduces fatigue
- Includes 20V 2.0Ah battery and charger so it is ready to use
- Adjustable spacer guard protects plants and lawn features when trimming close
- 10-inch cutting width and 20V battery limit runtime and coverage for larger yards
Verdict: Choose the WORX WG154 if you want the lightest, user-friendly 2-in-1 trimmer/edger for precise edging and routine lawn touch-ups.
CRAFTSMAN V20 13 in. Cordless String Trimmer and Edger Kit with 4Ah Battery
| Power Source | Battery Powered |
|---|---|
| Cutting width | 13 inches |
| Number of Batteries | 1 (included) |
| Battery Average Life | 63 minutes |
The CRAFTSMAN V20 13 in. String Trimmer and Lawn Edger kit is a straightforward battery-powered tool designed to cover larger yards without frequent recharges. It ships with a 4.0Ah V20 battery and charger and delivers a claimed runtime up to 63 minutes on low, a 13-inch cutting swath for fewer passes, and two-speed settings so you can favor runtime or cutting power. The unit converts to an edger with a turn-to-edge head and has an adjustable handle to improve comfort during longer sessions. In real-world use this model handles typical residential grass and medium-thick patches well, and the larger swath noticeably reduces time on larger areas compared with smaller 10-inch trimmers. Because it uses CRAFTSMAN V20 batteries you can swap packs with other V20 tools for more runtime flexibility. Expect the usual limits of a brushed motor trimmer under the heaviest brush or woody growth and plan work around battery cycles if you routinely tackle very large properties, but for homeowners wanting a capable cordless trimmer with longer single-charge runtime this kit is a practical choice.
Best for: Buyers who value performance per charge and want a single cordless tool that trims wide swaths and doubles as an edger for routine residential lawn maintenance.
Less Ideal for: Landscapers or users who routinely cut dense brush, saplings, or very large commercial properties should choose a heavier-duty brushless or gas-powered machine.
- Includes 4.0Ah V20 battery and charger for up to 63 minutes runtime on low
- 13-inch cutting swath covers more ground per pass than smaller trimmers
- Turn-to-edge head lets the same tool function as a lawn edger
- Two-speed settings let you prioritize power or extended runtime
- Adjustable handle improves user comfort during longer use
- Brushed motor design is less efficient and durable than brushless alternatives
- May struggle with very thick brush or woody stems compared with dedicated brush cutters
Verdict: Choose this CRAFTSMAN V20 kit if you want a capable cordless trimmer that maximizes single-charge runtime and covers larger lawn areas with a single pass.
goodjob 20V Cordless String Trimmer with Dual Batteries (12" Cutting Width)
| Power Source | Battery Powered |
|---|---|
| Cutting width | 12 inches |
| Included batteries | Two 2.0Ah lithium batteries |
| Noise level | Below 75 dB |
This compact goodjob 20V cordless string trimmer is built around an ultra-light 3.5 lb shaft and a 12-inch cutting swath, so it feels easy to maneuver for extended yard work. It is typically used for trimming lawn edges, clearing weeds around garden beds and sidewalks, and switching to a precision edger by rotating the head. Notable features include the dual 2.0Ah batteries with quick charger for up to roughly 40–60 minutes of run time, an auto-feed line system that removes bump-feeding, and a 180° pivoting head for tight spots. In practice the low weight and ergonomic grip reduce fatigue and make the tool friendly for beginners, seniors, or anyone who values quick cleanup without gas or heavy equipment. Limitations are typical of 20V consumer trimmers: it is best for regular grass and moderate weeds rather than thick brush or heavy-duty clearing, and runtime will vary with dense growth. Noise is below 75 dB and the tool offers basic safety locks and tool-free assembly for line changes and storage.
Best for: Buyers who prioritize a lightweight, easy-to-use trimmer for routine lawn maintenance and edging around a typical home lot and who want minimal setup and low maintenance.
Less Ideal for: Not a good fit for users who need a heavy-duty or professional-grade clearing tool for large properties with thick brush or invasive woody weeds.
- Very light 3.5 lb design reduces fatigue during longer sessions
- Includes two 2.0Ah batteries plus quick charger to extend usable runtime
- Auto-feed line eliminates bumping and simplifies operation
- 180° pivoting head converts for edging and reaches under low obstacles
- Tool-free assembly and safety lock make maintenance and storage straightforward
- 20V motor is not intended for heavy brush or professional commercial clearing
- Runtime estimate varies significantly with cutting load and thicker growth
Verdict: If you want the lightest cordless trimmer for regular yard trimming and edging with the convenience of two batteries, this model delivers efficient, low-fatigue performance.
Generic 3‑in‑1 Cordless String Trimmer with Two Batteries and Charger
| Power Source | Battery Powered |
|---|---|
| Cutting width | 30 centimeters |
| Speed | 18000 rpm |
| Number of Batteries | 2 Lithium Ion batteries required. (included) |
This cordless 3‑in‑1 trimmer is aimed at users who want a lightweight, all‑in‑one tool for trimming grass, edging, and light brush cutting. It runs on two 4.0Ah lithium batteries and an 880W motor rated at 18,000 RPM, so you can swap batteries to keep working without long downtime. The kit includes multiple blade types and plastic blades plus basic safety gear, which makes it useful straight out of the box for a variety of small to medium yard jobs. An adjustable shaft and ergonomic handle help reduce fatigue during longer sessions, and a dual safety start and debris baffle improve operator safety. Expect good performance on tall grass and weeds and occasional thicker brush, but this unit is best suited to lighter duty rather than heavy professional clearing. The battery system and included charger are convenient for intermittent suburban or small‑lot use, though runtime and cutting power will be limited by battery size when tackling very dense or extensive areas.
Best for: Buyers who want an affordable, ready‑to‑use cordless trimmer for regular yard maintenance on small to medium lawns and prefer minimal setup and included spare blades and batteries.
Less Ideal for: Landscape professionals or homeowners with large properties and frequent heavy brush cutting needs should look for higher‑capacity commercial models with specified runtime and greater cutting power.
- Comes with two 4.0Ah lithium batteries and a fast charger so you can swap and continue working
- Multiple cutting heads and spare plastic blades provide versatility for trimming, edging, and light brush cutting
- Lightweight design with adjustable shaft and ergonomic handle reduces user fatigue
- Safety features include a dual start switch and debris baffle to lower accidental starts and flying debris risk
- Not intended for heavy professional clearing; may struggle with very dense brush or large saplings
- No runtime or runtime-per-battery specification provided, so actual working time between charges is uncertain
Verdict: A budget‑minded, lightweight 3‑in‑1 cordless trimmer that comes ready to use with two batteries and versatile cutting heads for routine small‑lot yard care.
ALSO GO 24V Cordless 3‑in‑1 Weed Wacker with Dual 4.0Ah Batteries
| Power Source | Battery Powered |
|---|---|
| Cutting width | 6 inches |
| Speed | 11000 rpm |
| Number of Batteries | 2 (included) |
This ALSO GO 24V cordless weed wacker is designed for homeowners who want a light, easy-to-handle trimmer that still tackles a range of yard tasks. It uses two 24V 4000mAh batteries with a hot-swap design to provide extended work periods and supports single‑handed operation thanks to its 3.28 lb nominal weight and telescoping pole. The unit ships with five interchangeable blades for everything from delicate lawn edging to cutting tougher brush, and a wheel and splash guard assist cleaner edging and debris control. Notable practical benefits are the quiet, battery-powered operation that produces no exhaust and the dual safety lock that reduces accidental starts. Expect about 40–60 minutes of active cutting per battery set and 4–6 hour recharge times, so swapping batteries is important for longer jobs. Limitations include a relatively narrow 6 inch cutting width that makes clearing large fields slower than wider models and the reliance on blade changes instead of a conventional bump-feed line which may not suit users who prefer string trimmers for thick grassy areas.
Best for: Best for homeowners who prioritize a very lightweight, easy-to-handle cordless trimmer for routine lawn edging, light brush cutting, and quick yard touchups where comfort and reliable operation matter most.
Less Ideal for: Not a good fit for landscapers or users who need to clear large overgrown areas quickly or who prefer faster line-fed string trimming for heavy grassy work.
- Very lightweight for reduced arm and back fatigue during extended use
- Includes two 24V 4000mAh batteries with hot-swap capability to extend run time
- Telescoping pole and ergonomic handle for comfortable use by different-height users
- Five interchangeable blades let you switch between edging, light lawn work and tougher brush cutting
- Splash guard and wheel assist help control debris and produce consistent edges
- 6 inch cutting width is narrow compared with larger trimmers, so long jobs take more passes
- Uses replaceable blades rather than a bump-feed line which can be less convenient for frequent replacement or high-volume grassy trimming
Verdict: If you want the lightest, easy-to-use cordless trimmer for reliable home edging and light brush work, this 24V dual-battery ALSO GO model delivers comfortable handling and extended runtime.
BLACK+DECKER 20V MAX 12-Inch Cordless String Trimmer and Edger (LST300) with Battery and Charger
| Power Source | Battery Powered |
|---|---|
| Cutting width | 12 inches |
| Speed | 6200 rpm |
| Number of Batteries | 1 Lithium Ion (included) |
The BLACK+DECKER LST300 is a compact, battery-powered 12-inch string trimmer that doubles as a wheeled edger for tidying lawn edges and cutting lighter overgrowth. It uses a 20V Powerconnect lithium-ion battery and a PowerDrive transmission to deliver increased torque and a 6200 rpm head speed, while an automatic feed spool supplies line without bumping. The tool is designed for comfortable use with adjustable height and a textured handle, and the included 2.0 Ah battery claims about 33 percent more runtime than the previous pack. Practical benefits include easy conversion between trimming and edging, quiet operation compared with gas models, and the convenience of a wall-mountable charger. Limitations are its 12-inch cutting swath and 2.0 Ah battery, which make it best suited to small to medium yards or spot work rather than long sessions on large properties; heavier, woody brush will challenge its line and motor. For buyers who value a reliable, lightweight cordless trimmer with straightforward features and broad user feedback, this model is a sensible, low-risk choice.
Best for: Buyers who want a lightweight, easy-to-use cordless trimmer for regular lawn edge maintenance and small-to-medium yards and who prioritize reliable, well-reviewed tools over maximum power.
Less Ideal for: Those who need long runtime for large properties or a high-power tool for thick brush and heavy-duty clearing should look at higher-capacity battery systems or gas models.
- Converts quickly between string trimmer and wheeled edger for two tasks in one tool
- PowerDrive transmission and 6200 rpm head speed provide stronger cutting torque for its class
- Automatic Feed Spool supplies line without bumping, simplifying operation
- Lightweight design with adjustable handle and height improves comfort during use
- Includes 20V Powerconnect 2.0 Ah battery and charger so it is ready to use out of the box
- 12-inch cutting width and 2.0 Ah battery limit runtime and make it less suitable for large lawns
- Not designed for heavy woody brush where a more powerful or gas model is needed
Verdict: A lightweight, ready-to-use 2-in-1 cordless trimmer and edger that offers reliable performance for small to medium yards and routine edge maintenance.
WORX WG163 20V 12" 2-in-1 Cordless String Trimmer & Edger
| Power Source | Battery Powered |
|---|---|
| Cutting width | 12 inches |
| Speed | 7600 rpm |
| Number of Batteries | 2 Lithium Ion batteries required. (included) |
The WORX WG163 is a compact 2-in-1 cordless string trimmer that quickly converts to an in-line edger for tidy borders. It uses the brand’s 20V PowerShare batteries, and two 2.0Ah packs with a charger are included, so you can start work right away and share power with other WORX tools. The Command Feed button reliably advances line on demand, eliminating bump-feed guessing, while the head tilts 90 degrees to reach slopes and tight spots. Rubberized guide wheels and an adjustable spacer guard make edging straighter and help protect plants and ornamentation. At about 5.5 pounds it is easy to maneuver for longer sessions and the seven-position adjustable handle helps reduce strain. Limitations to note are the 12-inch cutting swath and modest battery capacity compared with larger models, so it is best for small to medium yards and light-to-moderate weed growth rather than heavy brush or commercial tasks.
Best for: Buyers who prioritize an easy-to-use, low-fatigue trimmer for routine yard tidy-ups and precise edging around flower beds and walkways.
Less Ideal for: Not a good fit for large properties, heavy overgrowth, or users who need long runtime for continuous commercial use.
- True 2-in-1 design converts between trimmer and edger without tools
- Includes two 20V PowerShare batteries and charger so it is ready to use
- Command Feed button gives instant, predictable line feed
- Lightweight and adjustable handle reduces user fatigue
- Tilt-head and rubberized wheels help trim slopes and produce straight edges
- 12-inch cutting width and 2.0Ah batteries limit run time and slow coverage on larger yards
Verdict: Choose the WORX WG163 if you want a lightweight, ready-to-use 2-in-1 trimmer with predictable line feed and easy edging for small to medium lawns.
Choosing the Right Lightest Cordless String Trimmer: Key Factors to Consider
Working Weight Versus Advertised Weight
Advertised tool weight often omits the battery. What matters in the garden is the working weight with the battery and any attachments fitted. A seemingly light bare shaft can become noticeably heavier once a battery is clipped in and a guard or shoulder strap is added. Consider how you will actually carry and swing the trimmer during typical sessions.
Also think about the cumulative effect of weight on repeated tasks. Short walks around a small yard might not expose weight issues, but longer edging sessions or trimming around many garden beds will magnify even small differences. Choose a model whose working weight matches how long and how often you plan to use it.
Battery Size, Chemistry, and Real-World Runtime
Battery capacity and chemistry determine how long you can trim before recharging. Higher-capacity packs give longer runtime but add weight. Lithium-ion cells are standard and offer favorable energy-to-weight ratios, but differences between pack voltages and amp-hours change how a tool feels and performs in the field.
Evaluate runtime based on the type of trimming you do. Heavy edge work and thick weeds will drain the battery faster than routine grass trimming. Look for runtime data measured under intermittent use or stated in minutes of continuous trimming, and plan for spare batteries if your yard requires extended sessions.
Cutting Head Design and Line Feeding
Cutting head design affects cut swath, line durability, and how often you need to reload. A wider cutting swath covers more ground per pass, reducing total run time, but larger heads can add weight and torque. Tap-feed heads versus bump-feed or auto-feed heads trade convenience against slightly different weights and balance characteristics.
Consider how easy it is to replace line and whether the head reliably feeds fresh line under normal garden conditions. A trimmer that is light but hard to reload will cost you time and frustration in routine maintenance.
Ergonomics, Balance, and Strap Options
A well-balanced trimmer reduces strain even if it is not the absolute lightest. Shaft length, handle shape, and the center of gravity determine how the tool sits when you lift it to trim. Adjustable handles, pivoting heads, and auxiliary grips help tune the fit to your body and tasks.
A shoulder strap or harness spreads load across your torso for long sessions. Look for systems that are easy to attach and adjust. Ergonomic features often matter more in practice than a fraction of a pound difference in weight.
Durability and Weather Resistance
Cordless trimmers spend time close to wet grass, soil, and debris that can wear components. Materials and seals around the motor and battery compartment influence how well a tool holds up in real outdoor conditions. Metal gear components in the head or drive can last longer than all-plastic gearing under heavy use.
Routine maintenance such as cleaning grass buildup and checking for loose fasteners keeps a trimmer working longer. Prioritize models with accessible service points and replaceable wear parts rather than sealed units that are difficult to maintain.
Noise and Vibration Levels
Noise and vibration affect comfort and the time of day you can work. Lighter cordless designs tend to run at lower noise levels than gas trimmers, but motor speed and head balance still create vibration that transmits to your hands and shoulders. Excessive vibration accelerates fatigue even on a light tool.
Try to assess reported vibration levels and whether handles have damping features. Lower vibration often correlates with a more pleasant trimming experience and better control when working close to plants or hardscape.
How Lightweight Trimmers Change Routine Yard Work
Lightweight cordless trimmers let you tackle edging and spot trimming in shorter, more frequent sessions without the recovery time heavier tools demand. Gardeners who prefer quick touch-ups will appreciate a tool that encourages frequent maintenance rather than saving everything for long, exhausting sessions.
Because lighter tools are easier to swing and control, they reduce the likelihood of accidental plant damage near borders and beds. That improved control also helps when trimming close to fences, planters, and decorative edging where precision matters.
- Encourages short maintenance sessions
- Improves control near plants and hardscape
- Reduces physical strain for older gardeners or those with back issues
Balancing Weight and Cutting Performance
Choose a balance between low weight and enough cutting capability to handle your common growth. If your yard mainly has fine grass, a very light, lower-torque trimmer can be ideal. If you occasionally need to tackle thicker patches or flowerbed edges with dense growth, prioritize slightly higher torque paired with a manageable battery weight.
Remember that cutting performance links directly to battery draw. A trimmer that seems light but lacks the torque to spin aggressively will force slower passes and possibly more battery swaps. Look for user-oriented specifications that describe typical use cases rather than raw rpm numbers alone.
- Fine grass favors extreme lightweight choices
- Thicker growth requires more torque and may increase battery drain
- Consider expected mix of tasks when selecting a balance
Practical Maintenance Tips for Cordless Trimmers
Keep the cutting head free of grass buildup and check line wear before each use. Regular cleaning prevents excess drag that shortens runtime and stresses the motor. Inspect the guard, fasteners, and battery contacts periodically to catch wear early.
Store batteries in a cool, dry place and follow recommended storage charge levels. Clean the shaft and handle to prevent grit from abrading plastic and metal parts, and replace worn lines or heads promptly to maintain cutting efficiency.
- Clear line housing of debris after heavy use
- Charge and store batteries according to manufacturer guidance
- Replace worn components to preserve motor health
Accessories That Make Lightweight Trimmers More Useful
A lightweight trimmer becomes far more versatile with the right accessories. Shoulder straps, auxiliary handles, and aftermarket guards help tailor handling and reduce fatigue. Inspect compatibility before buying accessories so they fit the tool's shaft and guard style.
Spare batteries and a compact charger let you extend workable time without carrying multiple heavy packs. Consider a line spool or head type that includes prewound spools for faster reloads if you value quick maintenance between tasks.
- Use shoulder straps to spread load for long sessions
- Carry a spare battery for extended yards
- Choose easy-to-reload heads or prewound spools
Safety Practices Specific to Cordless Trimmers
Wear eye and ear protection and sturdy footwear when trimming. Even lightweight trimmers can fling debris at high speed, so face and eye protection are essential. Keep bystanders and pets well away from the work area while the tool is operating.
Turn the tool off before inspecting or adjusting the cutting head. Because batteries deliver full power at any switch position, confirm the battery is removed when replacing line or doing maintenance. Use the guard as intended to deflect cut material away from you and sensitive plants.
- Always remove the battery before maintenance
- Wear eye protection and closed-toe shoes
- Keep people and pets away from the trimming area
How We Chose the Best Lightest Cordless String Trimmer
We prioritized tools that make frequent trimming less tiring while still handling typical grass and light weeds. Key evaluation criteria included actual measured weight in working configuration, realistic battery runtime under intermittent trimming conditions, cutting head performance on common lawn grasses, and whether the tool balance reduced strain during extended use. We also considered build durability for outdoor use and ease of routine maintenance such as line replacement and basic cleaning. Products were excluded if their advertised weight did not reflect a usable working setup with a battery installed, or if runtime figures were only achievable under unrealistic, low-load tests. We filtered out heavy commercial-grade units and extremely underpowered hobby models that would force multiple battery swaps. The final list emphasizes low weight paired with sufficient run time and trimming capability for typical homeowner tasks, along with simple maintenance and ergonomic handling.
FAQ
How much lighter does a cordless trimmer need to be to reduce fatigue?
Even a pound or two difference in working weight can noticeably reduce fatigue during long sessions. Balance and center of gravity matter as much as raw weight, so a slightly heavier but better-balanced tool can feel easier to use than a lighter, poorly balanced model.
Will lighter trimmers handle thick weeds and overgrown patches?
Lighter trimmers often have less torque than heavier cordless or gas models, so they can struggle with very thick or woody growth. For occasional heavy work, choose a light tool with higher-torque motor specs or plan to make slower, multiple passes to avoid overtaxing the battery.
How many batteries should I keep if I have a medium-sized yard?
Often one battery suffices for small yards, while medium-sized yards commonly need one spare to avoid interruptions. It depends on battery capacity and the intensity of trimming tasks, but having a second battery available is a practical hedge for uninterrupted sessions.
Are there maintenance steps that extend battery life?
Yes. Avoid fully depleting the battery regularly, follow recommended storage charge levels, store packs in a cool dry place, and keep contacts clean. Regularly cleaning the trimmer to reduce drag also lowers power draw and can extend the useful runtime per charge.
Can accessories like straps add too much weight to defeat a lightweight trimmer?
Straps and auxiliary handles add a small amount of weight but can greatly reduce perceived fatigue by redistributing load. Choose lightweight straps and attach them in a way that improves balance rather than hanging weight off the end of the shaft.
Final Verdict
Prioritize the working weight and how a trimmer feels in your hands over headline numbers. Balance, battery strategy, and cutting head design determine whether a lightweight tool will genuinely reduce fatigue for the kinds of tasks you do. Expect tradeoffs between absolute lightness and torque or runtime. Decide which matters more for your yard: shorter sessions with a very light trimmer or slightly heavier batteries that let you finish without swapping packs. Focus on working weight, ergonomics, and maintenance accessibility to choose a light cordless string trimmer that fits your routine.
