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.
If you want a trimmer that lets you finish edging, trimming under shrubs, and tidying fence lines without tiring your arms, choosing a very light cordless string trimmer matters. Lighter tools reduce fatigue and let you work longer without frequent rests, which is especially useful if you have stairs, raised beds, or tight spaces where balance and reach matter. This guide covers the top shortlisted lightweight cordless string trimmers designed for easy handling in small to medium yards. We evaluate each on real gardener concerns like battery runtime, cutting torque, and overall ergonomics so you can pick the right tool for your landscape and body type.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | goodjob 20V Cordless 12" String Trimmer with Two Batteries |  |
| Best Quality Built to a higher standard if you want something more solid | BLACK+DECKER 20V MAX 12" Cordless String Trimmer and Edger (LST300) |  |
| Best Value The sweet spot between price and what you get | WORX WG154 20V 10" Cordless 2-in-1 String Trimmer & Edger |  |
| Highest Rated A top-rated pick with lots of positive feedback | ALSO GO 21V Cordless Electric Weed Wacker with 12" Cutting Swath and 2×2.0Ah Batteries |  |
| Most Popular A crowd favorite that many people choose with confidence | RAXONE 21V Cordless String Trimmer with 2.5Ah Batteries and Fast Charger |  |
| Best Seller A high-volume bestseller chosen again and again | WORX 20V 12" 2-in-1 Cordless String Trimmer & Lawn Edger (WG163) |  |
goodjob 20V Cordless 12" String Trimmer with Two Batteries
| Power Source | Battery Powered |
|---|---|
| Cutting width | 12 inches |
| Included batteries | Two 2.0 Ah lithium batteries |
This cordless 20V string trimmer is built around an ultra-light 3.5 lb design and comes with two 2.0 Ah batteries plus a charger, so it is aimed at reducing fatigue during trimming sessions. It trims with a 12" cutting swath and a .065" line that handles regular lawn grass and common weeds, and the head pivots 180 degrees to reach under fences and around obstacles. The auto-feed line system eliminates frequent bumping and makes line replenishment simpler while the tool converts to an edger with a quick twist for tidying borders. Battery runtime is advertised at roughly 40 to 60 minutes depending on load, and swapping the included batteries keeps work moving without waiting to recharge. It runs quietly for a power tool and uses a safety-lock switch to prevent accidental starts. Important limitations are that runtime will vary with thick vegetation and heavy-duty jobs may require slower passes or more frequent battery swaps, and the lighter build means it is less suited for dense brush or commercial tasks.
Best for: Seniors or anyone who prioritizes a lightweight, low-vibration trimmer for routine yard maintenance and edging, especially those who value easy battery swapping and simple controls.
Less Ideal for: Users who need a commercial-grade trimmer or who regularly tackle dense brush and very thick weeds should consider a more powerful model.
- Very light 3.5 lb design reduces user fatigue for longer sessions
- Includes two 2.0 Ah batteries and a charger for extended, continuous runtime
- Auto-feed line head removes need for bumping and simplifies line management
- 180° pivoting head converts to an edger and reaches tight spots
- Runtime estimate (40–60 minutes) depends heavily on grass thickness and may be shorter in heavy use
- Not intended for heavy brush or professional landscaping tasks
Verdict: A featherweight, battery-powered trimmer with dual batteries and auto-feed that keeps seniors trimming longer with less fatigue.
BLACK+DECKER 20V MAX 12" Cordless String Trimmer and Edger (LST300)
| 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 2-in-1 string trimmer and wheeled edger designed for routine yard maintenance and edging tasks. It uses a 20V Powerconnect lithium-ion battery (included) and a PowerDrive transmission to deliver higher torque at the cutting head, while a 12-inch cutting swath makes it easy to navigate around garden beds and sidewalks. The automatic feed spool keeps line length correct without bumping, and adjustable height plus a textured handle improves comfort for longer sessions. Because it is cordless and lightweight it starts quietly and avoids the fuss of gas tools, and the included wall-mountable charger simplifies storage. Expect solid performance on standard grass and moderate overgrowth; however the 12-inch head and single included 2.0 Ah battery limit runtime and may require slower passes or a second battery for large yards or very thick weeds. For homeowners focused on convenience and everyday trimming, this model balances ease of use with enough cutting power for typical light-to-moderate jobs.
Best for: Homeowners who want an easy-to-use, low-noise cordless trimmer for regular lawn touch-ups and clean edging around sidewalks and beds and who value simplicity and proven performance.
Less Ideal for: Those with several acres, dense brush, or frequent heavy clearing needs should look at higher-voltage cordless or gas-powered trimmers instead.
- Converts quickly between string trimmer and wheeled edger for two common tasks
- Automatic Feed Spool (AFS) keeps line fed without bumping
- PowerDrive transmission increases torque for stronger cutting at the head
- Lightweight with adjustable handle and height for comfortable use
- Includes 20V lithium-ion battery and charger so it is ready to use out of the box
- 12-inch cutting swath and single 2.0 Ah battery limit runtime and may be slow on large yards or very thick weeds
- Not suited for heavy-duty brush cutting compared with more powerful gas or higher-voltage cordless models
Verdict: A lightweight, easy-to-use 2-in-1 cordless trimmer that is ideal for everyday light-to-moderate lawn trimming and edging tasks.
WORX WG154 20V 10" Cordless 2-in-1 String Trimmer & Edger
| Power Source | Battery Powered |
|---|---|
| Cutting width | 10 inches |
| Speed | 2800 rpm |
| Number of Batteries | 1 (included) |
The WORX WG154 is a compact, easy-to-use 2-in-1 cordless trimmer designed for routine edging and trimming on small to medium yards. It converts quickly from string trimmer to in-line edger by rotating the head, so you can tidy borders, sidewalks, and driveways without switching tools. The included 20V 2.0Ah battery and auto feed line system reduce interruptions during typical yard sessions, while the long shaft, auxiliary handle, and flower guard improve reach and control around beds and ornaments. At about 4.2 pounds it is noticeably lighter than full-size trimmers, making it straightforward to use for extended periods and easier to maneuver in tight spaces. Limitations are its 10-inch cutting width and modest 2800 rpm speed, which mean heavier or overgrown areas will take longer and may need follow-up passes or a more powerful model. The PowerShare battery platform is helpful if you already own or plan to expand WORX tools, but buyers wanting heavy-duty performance or very long continuous run times should consider higher-voltage alternatives.
Best for: Someone who prioritizes a lightweight, easy-to-handle tool for regular maintenance and neat edges around flower beds, walkways, and fences and who values tool interchangeability within a single battery platform.
Less Ideal for: Owners with large lawns, dense weeds, or frequent heavy-duty trimming needs should choose a higher-voltage or higher-speed trimmer for faster results.
- Lightweight design (about 4.2 lbs) reduces fatigue for longer trimming sessions
- 2-in-1 quick conversion between trimmer and edger for versatile yard use
- Auto feed line system reduces downtime for line adjustments
- Includes 20V 2.0Ah battery and charger compatible with WORX PowerShare tools
- 10-inch cutting width and 2800 rpm motor limit efficiency on thick or overgrown vegetation
Verdict: Buy this if you want a genuinely lightweight, easy-to-maneuver 2-in-1 trimmer that makes regular edging and trimming around small to medium yards quick and comfortable.
ALSO GO 21V Cordless Electric Weed Wacker with 12" Cutting Swath and 2×2.0Ah Batteries
| Power Source | Battery Powered |
|---|---|
| Cutting width | 12 inches |
| Speed | 9500 rpm |
| Number of Batteries | 2 (included) |
This ALSO GO 21V cordless weed wacker is designed for straightforward yard maintenance, combining a 9500 rpm motor, 12 inch cutting swath, and two 2.0Ah batteries to handle routine trimming and edging around a small to medium yard. It converts from trimmer to edger by rotating the head 90 degrees and allows vertical adjustment for slopes and corners, which makes precise edge work easier without switching tools. The automatic line feed advances the 1.4mm line as it wears, reducing stops to reload, and the package includes ten spare spools so you can keep going. At roughly five pounds and with an adjustable auxiliary handle, it is easy to maneuver and causes less fatigue during longer sessions. Important limitations are modest battery capacity compared with higher-end cordless models and a 12 inch cutting width that is ideal for light to moderate growth but will require more passes on very dense or overgrown areas. The unit is practical for everyday lawn upkeep where ease of use and low weight matter more than professional-level runtime or heavy-duty cutting power.
Best for: Best for seniors or anyone who prioritizes a lightweight, easy-to-handle trimmer for regular lawn maintenance and precise edging around walkways and garden beds.
Less Ideal for: Not a great choice for users who need long continuous runtime or who regularly trim very dense, overgrown brush on large properties.
- Lightweight design eases handling and reduces operator fatigue
- Includes two 2.0Ah batteries and a fast charger for quick swap-and-go use
- Automatic line feed with spare spools minimizes interruptions for reloading
- 2-in-1 trimmer and edger head plus vertical adjustment improves precision on edges and slopes
- 12 inch cutting width balances control and coverage for typical yard tasks
- Battery capacity is modest so continuous runtime may be limited on larger yards
- 12 inch cutting swath and 2.0Ah batteries are not optimal for very dense or overgrown vegetation
Verdict: A lightweight, easy-to-use cordless trimmer with automatic line feed and included batteries that makes routine trimming and edging simple for seniors and casual users.
RAXONE 21V Cordless String Trimmer with 2.5Ah Batteries and Fast Charger
| Power Source | Battery Powered |
|---|---|
| Cutting width | 12 inches |
| Speed | 9500 rpm |
| Number of Batteries | 2 (included) |
This RAXONE 21V cordless string trimmer is built for routine yard maintenance on small to medium lawns. It uses a high-speed motor rated up to 9500 RPM and a 12-inch cutting diameter to cover borders and open areas quickly, while an automatic line feed keeps the head ready without frequent manual adjustments. The package includes two 2.5 Ah batteries and a fast charger, so you can swap packs for extended runtime during longer jobs. The head rotates to switch between trimming and edging and tilts to reach slopes and corners, which makes it versatile around beds, fences, and walkways. At just over six pounds listed weight and described as ergonomic, it is easy to handle for users who want a lighter tool that minimizes arm fatigue. Important limitations are that it is intended for grass and moderate weeds rather than woody stems or heavy brush, and battery runtime will depend on cutting conditions. For someone after a dependable, easy-to-manage electric trimmer for regular lawn upkeep, this model delivers practical, user-friendly features.
Best for: Buyers who prioritize a reliable, easy-to-use cordless trimmer for routine lawn care and edging on small to medium yards and value minimal fuss with battery swaps and auto-feed line.
Less Ideal for: Those who need a heavy-duty brush cutter for thick brush or commercial-scale properties should choose a more powerful gas or professional-grade trimmer.
- Includes two 2.5 Ah batteries and a fast charger for extended run time between charges
- Automatic line feed reduces interruptions for reloading line during use
- 2-in-1 rotating head and tilting capability for quick switching between trimming and edging
- High-speed motor with up to 9500 RPM and 12-inch cutting width covers ground efficiently
- Lightweight ergonomic design aimed at reducing arm fatigue during extended use
- Not designed for woody stems, thick brush, or heavy-duty clearing
- Actual runtime will vary with grass density and may be limited for large yards
Verdict: A lightweight, user-friendly cordless trimmer that reliably handles regular grass trimming and edging with included spare battery capacity for longer sessions.
WORX 20V 12" 2-in-1 Cordless String Trimmer & Lawn Edger (WG163)
| 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 converts quickly to a wheel-guided edger for straight, clean borders. It uses a Command Feed spool so you only advance line when you want to, and the head tilts 90 degrees to reach slopes and tight areas. Rubberized support wheels help guide edging for consistent results and the adjustable spacer guard protects flowers and landscaping during trimming. Included with the tool are two 20V PowerShare batteries and a charger, which makes it ready to work on small to medium yards and lets you swap batteries across other WORX 20V tools. At about 5.5 pounds it is easy to maneuver and less fatiguing for longer sessions. Limitations to consider are the modest 12-inch cutting swath and single-speed motor, so it is not the fastest option for very large properties or heavy brush. The Command Feed system reduces bump-feed interruptions but you will still need to keep replacement line on hand for sustained use.
Best for: Buyers who want a lightweight, easy-to-use 2-in-1 trimmer and edger for small to medium lawns and value included batteries and proven features backed by many user reviews.
Less Ideal for: Not well suited for homeowners with large acreage, dense brush, or who need variable-speed power for heavy-duty cutting tasks.
- Converts quickly between trimmer and wheel-guided edger for two tools in one
- Command Feed spool provides on-demand line advance without bumping
- Two 20V PowerShare batteries included so you can work longer and use batteries across other WORX tools
- 90° tilting head and adjustable spacer guard improve access and protect plants
- Lightweight design eases fatigue during extended use
- 12-inch cutting width and single-speed motor limit efficiency on large yards or thick vegetation
Verdict: Choose the WORX WG163 if you want a lightweight, battery-ready 2-in-1 trimmer and edger that is easy to use and works well on small to medium lawns.
Choosing the Right Lightest Weight Cordless String Trimmer: Key Factors to Consider
Overall Weight and Balance
Overall weight drives how long you can comfortably work. A lighter trimmer reduces shoulder and wrist strain, but balance is equally important. If the battery or motor is located far from the center, the tool can feel front- or rear-heavy and fatigue you faster even if its scale weight is low.
Consider how the weight distributes along the shaft and whether the handle positions let you maintain a neutral wrist. Adjustable shafts and secondary straps can help distribute load, but they add complexity. For gardeners who trim frequently or have mobility issues, prioritize a model that feels steady in both horizontal trimming and vertical edging positions.
Battery Capacity and Runtime
Battery capacity determines how long a lightweight cordless trimmer remains useful before you must recharge. Batteries with higher amp-hour ratings usually run longer but add weight. The goal is finding a battery and motor pairing that gives enough runtime for your typical jobs without pushing the tool's weight beyond comfortable limits.
Also consider recharge speed and whether the battery platform is compatible with other yard tools you own. If you often need longer sessions, look for higher-capacity batteries that still keep the overall system within an acceptable weight range. Runtime claims vary with grass density and cutting mode, so plan for reduced run time in thicker or damp vegetation.
Cutting Power and Line Feed
Cutting power affects how easily the trimmer slices through different grasses and weeds. Very light trimmers may use smaller motors that struggle with dense patches or thick-stemmed plants. Check the motor wattage or stated cutting diameter and understand that lower power units are best for fine grass, light weeds, and edging.
Line feed type matters for continuous work. Bump feed heads are common and simple, while automatic feed heads reduce interruptions but can add a bit of weight. Choose the line thickness recommended for the motor to keep cutting efficient and avoid bogging down the battery.
Ergonomics and Controls
Ergonomics covers handle shape, trigger placement, shaft length, and vibration control. These features influence control and comfort during extended use. A straight shaft can be lighter and provide reach, while curved shafts are often easier to handle for close-in trimming. Adjustable handles let you customize reach and balance depending on task and user height.
Look for easy-to-reach controls that you can operate with gloves and intuitive on-off switches. Reduced vibration lowers wrist fatigue and improves cut consistency. For frequent trimming, consider models with soft-grip handles and user-adjustable mounting points for the auxiliary handle.
Maintenance and Durability
Durability determines how long a light trimmer remains useful under regular outdoor conditions. Materials, sealed motor housings, and robust bump heads will extend service life. Lightweight plastics are common to keep weight down, but check for reinforced mounts and a simple repair path for wear items like bump heads and spools.
Maintenance ease matters because frequent line changes or battery swaps interrupt work. Choose designs with tool-free head access and straightforward battery removal. Corrosion-resistant fasteners and clear access to the gearbox or motor area simplify seasonal care and inspection.
Noise and Vibration Levels
Noise and vibration affect usability in residential settings. Lighter cordless trimmers tend to be quieter than gas models, but motor design and head balance influence noise and feel. Lower vibration reduces hand fatigue and improves control during precision edging and trimming tasks.
If you work in noise-sensitive neighborhoods or have nearby sleeping children or pets, choose a trimmer with documented lower decibel levels and smooth-running motors. Also check whether the head balance minimizes wobble, which can translate into perceived vibration even when the motor is quiet.
Why Choose a Light Cordless Trimmer for Small Yards
A light cordless trimmer is ideal if your property has lots of tight corners, steps, or raised garden beds. The reduced weight makes it easier to move between lawn areas, carry up and down stairs, and trim close to delicate plantings without risking damage from a cumbersome tool.
Battery power gives freedom from cords, and lighter batteries permit faster direction changes and better one-handed control for edging. For small yards, a balance of modest cutting power and long-enough runtime usually delivers the best combination of performance and ease.
- Improved maneuverability around obstacles
- Less fatigue for repeated short sessions
- Simpler storage and transport
Shaft Types and Reach Considerations
Straight shafts typically provide longer reach and can keep the motor and battery closer to the centerline of the tool, which helps balance. Curved shafts are often slightly shorter and put the cutting head at a more ergonomic angle for many users.
Think about where you do most of your trimming. If you need to reach under low shrubs or along long fence lines, prioritize reach and a shaft that lets you maintain a natural posture.
- Straight shaft for reach and balance
- Curved shaft for close-in control and lighter feel
Battery Platforms and Interchangeability
If you already own cordless tools, select a trimmer that uses the same battery platform to avoid extra chargers and batteries. Interchangeable batteries let you swap a drained pack for a fresh one quickly and can be the difference between finishing a job in one go or having to wait.
Also consider the availability of higher-capacity battery options on the same platform so you can scale runtime without changing the tool donor system.
- Compatibility reduces gear redundancy
- Higher-capacity packs add runtime but also weight
Line Types and Cutting Diameter
Line diameter and shape affect cutting efficiency. Thicker or twisted line gives better performance in coarse weeds but increases load on the motor, shortening runtime. Thinner line is lighter on the motor and battery but will wear faster and may struggle with dense vegetation.
Choose a line and head combination that matches your common vegetation. For yard grass and light weeds, a moderate-diameter line usually balances cut and runtime.
- Thicker line for tougher weeds
- Thinner line for lighter grass and longer runtime
Storage, Winter Care, and Longevity
Store batteries in a cool, dry place and keep the trimmer clean of grass build-up to prolong life. Remove batteries for winter storage and perform light inspection on the head and guard before season start. Small maintenance tasks now prevent bigger repairs later.
A lightweight trimmer with easy-to-service parts will typically remain useful longer because homeowners are more likely to perform routine upkeep when tasks are simple.
- Remove batteries for long-term storage
- Clean debris from head and guard after use
How We Chose the Best Lightest Weight Cordless String Trimmer
We focused on practical criteria that matter when the primary goal is minimal weight without sacrificing useful performance. Our selection prioritized trimmers that balance light weight with usable battery life, adequate cutting torque, and comfortable handling. We looked at battery system energy capacity and run time estimates because a light tool is only useful if it lasts long enough for typical trimming sessions. Cutting power and line feed consistency were considered to ensure the tool can handle common grasses and light weed growth. Ergonomics and balance were evaluated since a light machine that is poorly balanced can still feel heavy in use. Build durability and ease of maintenance were included so the trimmer holds up over seasons. We excluded industrial or heavy-duty pro models and any designs that required extensive assembly or unusual fuels. Filters applied included maximum overall weight, reported runtime for comparable batteries, clear torque or wattage data for motor comparison, and visible ergonomic features such as adjustable shafts and loop handles. We also removed units that sacrifice basic cutting capability for weight alone or that depend solely on proprietary accessories that limit homeowner use.
FAQ
How long will a lightweight cordless trimmer run on a single battery?
Run time depends on battery capacity, cutting load, and motor efficiency. For light grass and edging, expect shorter 20 to 40 minute windows from smaller packs and longer 40 to 60 minute sessions from higher-capacity batteries. Thicker weeds will cut runtime significantly.
Is a lighter trimmer less powerful than heavier models?
Often lighter trimmers use smaller motors, so they may struggle on dense or woody growth. They are usually sufficient for lawn grass, light weeds, and edging. If you face heavy vegetation, consider a model that balances weight with a stronger motor and higher-capacity battery.
Can I use the same battery as other cordless garden tools?
Many manufacturers share battery platforms across tools. Using the same battery reduces the number of chargers and spares you need. Check compatibility and whether higher-capacity packs are available on that platform to extend runtime.
How do I maintain the cutting head on a light cordless trimmer?
Regularly remove grass build-up and replace the spool or line when performance drops. Keep the head free of debris and ensure the bump feed or automatic feed functions smoothly. Periodic inspection of the guard and trimmer head fasteners helps avoid unexpected failures.
Are straps or harnesses necessary with a light trimmer?
Straps are optional but can help distribute load for longer sessions and stabilize the tool when you reach awkward angles. For very short tasks, a well-balanced light trimmer may not need a strap, but they are useful for users with limited upper-body strength or when working on sloped terrain.
Will a light cordless trimmer work well for edging?
Yes. Lightweight trimmers are excellent for edging because they are easier to tip and control for vertical cuts. Look for models with a head that rotates or a design that supports clean edging positions without strain.
Final Verdict
When lightness is the priority, focus on balance, battery pairing, and the type of vegetation you will trim most often. A very light cordless string trimmer that is well balanced and uses a compatible battery platform will make routine maintenance faster and less tiring. Prioritize enough cutting power and runtime for your yard size, and prefer ergonomic controls and easy maintenance features. Choosing a tool that matches your typical tasks gives the best trade-off between comfort and useful performance.
