5 Best Lightweight Battery String Trimmer Picks for Easy Yard Work

The best lightweight battery string trimmer should be easy to carry without sacrificing enough cutting power for normal grass, lawn edges, and light weeds. For most homeowners, I prefer models around 4–6 pounds with a lithium-ion battery, adjustable shaft, simple line-feed system, and 10- to 12-inch cutting swath.

My top recommendation is the WORX WG163 20V PowerShare 12-Inch String Trimmer & Edger. At roughly 5.3–5.5 pounds, it combines excellent maneuverability with a 12-inch cutting path, CommandFeed line advancement, telescoping shaft, pivoting head, and wheeled edging system.

If minimum weight is your priority, consider the LiTHELi U20 Handy+ 20V Cordless String Trimmer. The tool weighs only about 3.1 pounds without its battery and roughly 4.85 pounds as a working kit, making it particularly easy to maneuver for quick trimming and edging.

For buyers who want a slightly larger battery while keeping weight low, the Greenworks 24V 12-Inch Cordless String Trimmer & Edger is another strong option. The current 4.0Ah configuration is listed around 5.2 pounds and provides a 12-inch cutting width in a compact 24V platform.

5 Best Lightweight Battery String Trimmer

1. WORX WG163 20V PowerShare 12-Inch String Trimmer & Edger- Best Overall

The WORX WG163 earns my top position because it delivers one of the best combinations of low weight, useful cutting width, ergonomics, edging capability, and proven buyer acceptance.

WORX lists the machine at approximately 5.29 pounds, while current retail product data puts the complete configuration around 5.5 pounds. Either way, it is dramatically easier to carry than many high-powered 40V and 56V cordless trimmers that can reach 10 pounds or more with their batteries installed.

That weight advantage becomes noticeable during repetitive trimming.

You are rarely holding a string trimmer completely stationary. The tool is constantly moving from side to side while you work along fences, trees, garden beds, retaining walls, and landscaping.

Every extra pound contributes to arm and shoulder fatigue.

The WG163 uses a 20V PowerShare battery system and a 12-inch cutting diameter. Its motor spins up to approximately 7,600 RPM and uses 0.065-inch line, which is a sensible combination for normal residential grass and light weeds.

The line-feed system is one of its best usability features.

Instead of repeatedly striking a bump head against the ground, CommandFeed advances additional line with a button. This makes the trimmer easier for beginners and eliminates one of the most common annoyances associated with inexpensive string heads.

The telescoping shaft is another reason it works well as a lightweight trimmer.

You can adjust the working length according to your height and posture rather than adapting your body to a fixed shaft.

Its auxiliary handle is adjustable as well.

That matters because actual comfort depends on more than the number shown on a scale. A 5-pound tool with poor balance can feel worse than a slightly heavier tool with properly positioned handles.

The head pivots through 90 degrees, making it easier to reach slopes and awkward sections.

When you want a clean line beside a sidewalk or driveway, the machine converts to an edger and uses support wheels to help guide the head.

WORX also includes two 2.0Ah batteries with the common WG163 configuration. That lets you keep one available as a backup rather than stopping the entire job when the first pack reaches the end of its charge.

Buyer history is unusually strong.

Recent marketplace tracking showed approximately 27,000+ ratings for this WG163 configuration and thousands of monthly sales, making it much more established than many newer ultra-light trimmers.

There is a trade-off.

The thin 0.065-inch line and 20V power system are designed around ordinary lawn maintenance, not brush clearing.

If your property contains waist-high weeds, woody stems, and heavy neglected vegetation, you need a more powerful trimmer.

For a maintained small or medium residential yard, though, that lighter-duty engineering is exactly what keeps the WG163 comfortable.

For the average homeowner prioritizing low fatigue, simple controls, edging, adjustable ergonomics, and proven reliability, this is my best overall choice.

2. LiTHELi U20 Handy+ 20V Cordless String Trimmer- Lightest Pick

If the central requirement is simply “make the trimmer as light as possible,” the LiTHELi U20 Handy+ deserves serious consideration.

LiTHELi lists the bare tool at just 3.1 pounds.

The included 20V 2.0Ah battery adds roughly 0.9 pound according to manufacturer specifications, while a recent complete retail configuration was listed around 4.85 pounds.

That is exceptionally light for a full cordless string trimmer.

It makes the U20 particularly easy to lift when trimming around flower beds, working beneath bushes, or rotating the head into edging position.

The motor runs at approximately 7,500 RPM, with a compact 10-inch cutting diameter in the manufacturer’s primary specification.

A 10-inch cutting path is smaller than the 12-inch WORX and Greenworks heads.

That sounds like a disadvantage—and for a large property, it is.

But compact heads provide excellent maneuverability.

If your lawn contains narrow sections between landscaping, raised beds, trees, or decorative borders, the smaller head can actually make precision work easier.

LiTHELi also incorporates automatic/manual line feeding to reduce interruptions during trimming.

The cutting head rotates so the machine can perform both trimming and lawn-edge maintenance.

Another unusual feature is the U20 battery system.

Its battery includes a USB-C interface and can double as a portable power bank for compatible electronics. That feature has nothing to do with grass-cutting performance, but it increases the utility of a battery you would otherwise use only with outdoor tools.

The biggest limitation is cutting capacity.

A machine engineered to weigh this little is not the product I would choose to reclaim a neglected field.

The compact motor, small cutting swath, and lightweight construction are optimized for regular lawn grass, light weeds, edging, and touch-up work.

For a large property, the narrow head also means more passes.

But those compromises are reasonable if reducing physical strain is the primary goal.

If you previously stopped using a heavier gas or high-voltage cordless trimmer because it became tiring to carry, the U20 Handy+ is one of the most interesting ultra-light alternatives.

3. Greenworks 24V 12-Inch Cordless String Trimmer & Edger- Best Battery Capacity

The Greenworks 24V model is a strong middle ground between an ultra-compact trimmer and a more substantial cordless machine.

The current ST24B410-00 configuration is listed at approximately 5.2 pounds, yet it pairs that light overall design with a 24V 4.0Ah lithium-ion battery and 12-inch cutting width.

That 4.0Ah battery capacity is notable.

Many lightweight trimmers ship with 1.5Ah or 2.0Ah battery packs to minimize weight.

A 4.0Ah pack stores substantially more nominal energy than a 2.0Ah pack at the same voltage, providing more potential runtime before charging is necessary.

Actual runtime still varies with grass density, cutting load, operating speed, battery temperature, and user technique.

But extra battery capacity is useful when you have more than a few minutes of edging to complete.

The Greenworks uses a 12-inch cutting width.

That is large enough to make reasonable progress around a residential yard without requiring the motor, battery, and shaft dimensions of a heavy-duty 15- or 17-inch trimmer.

Its current configuration can also function as an edger, adding versatility for sidewalks and driveway borders.

Another advantage is the broader Greenworks 24V ecosystem.

A battery platform becomes much more valuable when the same packs work across multiple lawn and power tools.

That can reduce how many chargers and battery types you need to store.

Current product data shows a substantial buyer history for this Greenworks 24V family, with thousands of ratings attached to the listing.

Its main disadvantage compared with the WORX is refinement.

The WORX’s telescoping shaft, edging wheels, pivot system, and push-button CommandFeed make it particularly friendly for users who value ergonomic adjustments.

Greenworks feels more like a straightforward lightweight yard tool.

That is not necessarily bad.

For someone already invested in Greenworks 24V batteries, choosing this machine may make more financial sense than starting an entirely new battery ecosystem simply to save a few ounces.

4. BLACK+DECKER LST300 20V MAX 12-Inch String Trimmer & Edger- Best Proven Budget Pick

The BLACK+DECKER LST300 has remained popular because it keeps the formula simple.

It uses a 20V MAX lithium-ion battery, 12-inch cutting swath, 0.065-inch line, adjustable handle, and 2-in-1 trimmer/edger configuration, all in a package weighing approximately 5.7 pounds.

That makes it slightly heavier than the first three picks, but it is still genuinely lightweight.

Its POWERDRIVE transmission is designed to transfer motor power efficiently to the cutting head, with the machine operating around 6,200 RPM.

The LST300 also uses BLACK+DECKER’s Automatic Feed Spool, often abbreviated AFS.

Instead of bumping the trimmer head against the ground, the system automatically advances line as required.

That reduces bending and interruptions during normal trimming.

For routine lawn care, convenience matters.

A technically stronger trimmer can become frustrating if the string constantly jams or the head needs repeated manual adjustment.

The shaft and handle positions can also be changed for better comfort.

This allows shorter and taller users to find a more natural operating position and reduces the tendency to hunch forward while trimming.

Current product data shows roughly 9,000+ buyer ratings, which gives the LST300 one of the strongest ownership histories among lightweight battery trimmers.

Its strongest use case is a normal residential lawn.

The 12-inch head is wide enough for fence lines, trees, garden borders, and driveway edges, while the modest battery and line diameter keep overall weight manageable.

The weakness is heavy growth.

Like the WORX, it uses thin 0.065-inch line.

That line can handle normal grass effectively but wears quickly when repeatedly striking thick woody weeds, masonry, or chain-link fencing.

If you want a simple, affordable, well-established cordless trimmer and do not need brush-cutter performance, the LST300 remains one of the safest lightweight choices.

5. SENIX GTX2-M 20V 10-Inch Cordless String Trimmer- Best Compact Pick

The SENIX GTX2-M earns the final spot because it combines very low weight with more adjustability than many ultra-budget machines.

Current product specifications put the complete unit around 4.32 pounds, with a 20V battery platform and compact 10-inch cutting width.

That makes it lighter than the WORX, BLACK+DECKER, and Greenworks options.

The smaller head is ideal for tight areas.

You can work between garden borders, around playground equipment, beside raised beds, and underneath shrubs without carrying around a large professional-style cutting head.

The head can be adjusted to several positions, and the shaft is designed around lightweight trimming and edging.

SENIX’s related GTX2 platform runs around 8,500 RPM on its straight-shaft 10-inch configuration, demonstrating that the brand is able to maintain respectable head speed while keeping total tool weight low.

The battery capacity is modest compared with larger premium machines.

That is part of the trade-off required to keep weight down.

A 5Ah or 6Ah battery may run much longer, but adding a large battery at the rear of the tool defeats the purpose of buying an ultra-light trimmer.

The GTX2-M makes the most sense for small yards, townhomes, routine edging, and short maintenance sessions.

It is not designed to compete with a professional 56V brushless trimmer.

For homeowners who want something light, simple, cordless, and easy to store, that specialization can be an advantage rather than a weakness.

Lightweight Battery String Trimmer Comparison

Product	Approx. Weight	Voltage	Cutting Width	Best For
WORX WG163	5.3–5.5 lbs	20V	12 in.	Best overall
LiTHELi U20 Handy+	~4.85 lbs with battery	20V	10 in.	Minimum weight
Greenworks 24V	~5.2 lbs	24V	12 in.	Larger battery capacity
BLACK+DECKER LST300	5.7 lbs	20V MAX	12 in.	Proven budget choice
SENIX GTX2-M	~4.3 lbs	20V	10 in.	Small yards & tight spaces

What Counts as a Lightweight Battery String Trimmer?

For this guide, I consider roughly 6 pounds or less genuinely lightweight for a complete residential cordless trimmer.

There are professional battery trimmers advertised as “lightweight” that weigh 10–12 pounds with a battery.

That may be light relative to other commercial equipment, but it is not what most homeowners mean when searching for an easy-to-carry weed eater.

For normal residential use:

Under 5 pounds is exceptionally light.

5–6 pounds is an excellent lightweight range.

6–8 pounds can still be manageable if the tool is well balanced.

Once you move toward 10 pounds or more, balance, shoulder straps, and handle ergonomics become significantly more important.

Why Weight Matters More Than Maximum Power

A string trimmer is a handheld tool.

Unlike a lawn mower, its entire working weight is supported by your arms and upper body.

You continuously swing the cutting head from side to side.

That is why a difference of only two or three pounds can feel substantial after 20 minutes.

A lighter trimmer is particularly beneficial for:

small residential lawns, frequent edging, landscaping-heavy properties, quick touch-ups, and users who simply prefer less physical strain.

There is also less rotational inertia when repositioning the tool.

That makes a compact machine easier to stop and redirect around flowers, trees, fences, and ornaments.

Tool Weight vs Weight With Battery

Always check how a manufacturer measures weight.

Some specifications list bare-tool weight.

Others show the complete operating weight with battery.

This can create misleading comparisons.

For example, LiTHELi lists the U20 Handy+ around 3.1 pounds as a bare tool, while its battery adds additional weight. A recent complete configuration was roughly 4.85 pounds.

Larger batteries make an even bigger difference.

A trimmer may look extremely light on a specification sheet but gain several pounds when equipped with a high-capacity battery.

When weight is your main concern, compare the working configuration you will actually use.

Does a Lightweight Trimmer Have Enough Power?

For normal grass, yes.

Modern lithium-ion batteries and efficient electric motors allow compact cordless trimmers to maintain high cutting-head speeds without requiring large gasoline engines.

The WORX runs around 7,600 RPM.

LiTHELi’s compact model reaches approximately 7,500 RPM.

Some SENIX 20V models operate around 8,500 RPM.

But RPM is only one part of cutting performance.

A heavy-duty machine may use thicker line, a wider swath, more torque, and a larger motor.

Ultra-light trimmers typically use 0.065-inch line, which is excellent for lawn grass but less suitable for thick brush.

Cutting Width: 10 Inch vs 12 Inch

The five products here mainly use 10- or 12-inch cutting swaths.

A 12-inch trimmer removes more vegetation with each sweep.

That makes it better for open fence lines and larger lawns.

A 10-inch head is more compact.

It provides excellent control between landscaping features and keeps overall tool weight low.

For a small yard, I would not reject a good trimmer simply because it has a 10-inch cutting path.

For a half-acre property with long uninterrupted fence lines, however, a wider machine will improve productivity.

20V vs 24V: Does Voltage Matter?

Not as much as many buyers assume.

Voltage tells you about the electrical platform, but it does not directly tell you:

runtime, total energy capacity, cutting torque, efficiency, or overall performance.

A well-designed 20V trimmer can outperform a poorly designed higher-voltage machine in light lawn maintenance.

Battery amp-hours also matter.

A 4.0Ah pack stores roughly twice the nominal charge capacity of a 2.0Ah pack at the same voltage.

But larger packs usually weigh more.

When the keyword is lightweight battery string trimmer, the best battery is not automatically the largest battery.

It is the pack that provides enough runtime without making the tool uncomfortable.

2.0Ah vs 4.0Ah Battery

A 2.0Ah battery is an excellent choice for keeping a trimmer light.

It works especially well when your trimming session is short or you own a second battery.

A 4.0Ah battery generally provides more potential runtime but adds weight.

For a small yard, I often prefer two lightweight batteries over one oversized pack.

You can use the first battery, swap to the second if needed, and never carry the extra cell weight unless necessary.

Auto Feed vs Command Feed

Line feeding is a surprisingly important part of string-trimmer ownership.

An automatic-feed system advances string without requiring you to strike the head against the ground.

BLACK+DECKER uses its Automatic Feed Spool system, while Greenworks also offers auto-feed designs.

WORX takes a slightly different approach with CommandFeed, giving the operator push-button control over line advancement.

Neither system is universally perfect.

Automatic systems can occasionally advance more line than necessary.

Manual push-button systems give you more control but require you to notice when the line has become short.

Both are convenient alternatives to repeatedly bumping the head.

Trimmer and Edger Combination

Most lightweight cordless trimmers are designed for homeowners rather than professional crews.

For that reason, 2-in-1 trimmer/edger designs are extremely common.

The cutting head rotates so the line moves vertically along pavement.

WORX goes further by adding support wheels, making it easier to maintain a consistent line along sidewalks.

This can eliminate the need to own a separate lightweight edger for a small property.

Telescoping Shaft and Adjustable Handle

A trimmer should fit the operator.

If the shaft is too short, you bend forward.

If it is too long, the cutting head becomes harder to control.

A telescoping shaft allows you to change the working length.

An adjustable auxiliary handle changes where your front hand supports the machine.

These adjustments also affect balance.

The ideal setup positions the cutting head near the ground without requiring you to lift the battery end excessively or hunch your shoulders.

This is one area where WORX performs particularly well.

Lightweight Trimmer for Small Yards

If your property is under roughly a quarter acre and maintained regularly, you probably do not need a 15-pound commercial cordless trimmer.

A compact 20V machine is often easier.

Your actual trimming area is usually much smaller than the total lawn area.

A mower handles the open turf.

The string trimmer only needs to clean:

fence lines, trees, mailbox posts, flower beds, driveways, sidewalks, sheds, and places the mower cannot reach.

For that workload, 10–12 inches of cutting width can be enough.

Lightweight Trimmer for Thick Weeds

This is where compromise becomes necessary.

Ultra-light machines prioritize comfort rather than maximum torque.

If your yard contains only occasional thick weeds, make multiple controlled passes instead of forcing the head through the entire plant at once.

For consistently heavy vegetation, consider moving to a stronger brushless trimmer using 0.080- or 0.095-inch line.

It will weigh more, but the heavier line lasts longer and cuts dense growth more effectively.

The right answer is not always to buy the lightest possible machine.

It is to buy the lightest machine that can handle your actual vegetation.

Brushless vs Brushed Motor

A brushless motor generally offers better efficiency, lower maintenance, and a favorable power-to-weight ratio compared with traditional brushed motor designs.

However, brushless technology alone does not guarantee a lighter complete trimmer.

Large brushless machines may have:

bigger shafts, larger gearcases, wide cutting heads, thicker line, and high-capacity batteries.

Those components add weight.

For light residential trimming, a simple brushed 20V machine can still be perfectly adequate.

Battery Ecosystem Matters

Before choosing between two similar trimmers, check the batteries already in your garage.

WORX uses its PowerShare platform.

Greenworks has an extensive 24V family.

BLACK+DECKER uses its 20V MAX POWERCONNECT ecosystem.

LiTHELi has its U20 platform.

Owning compatible batteries can reduce purchase cost and make it easier to keep a charged backup pack available.

Battery ecosystem value becomes especially significant as you add a leaf blower, hedge trimmer, chainsaw, drill, or other cordless tools.

Battery String Trimmer vs Gas Trimmer

The weight difference can be dramatic.

Gas trimmers require an engine, fuel tank, starter mechanism, carburetor, exhaust system, and gasoline.

Battery trimmers replace much of that hardware with an electric motor and removable lithium-ion pack.

Cordless electric models also eliminate:

fuel mixing, carburetor cleaning, pull starting, exhaust fumes, spark-plug maintenance, and gasoline storage.

Gas machines still provide advantages for long-duration professional work and rapid refueling.

For a homeowner specifically seeking minimal weight and simple operation, battery power is usually the more logical choice.

Battery Trimmer vs Corded Electric Trimmer

Corded trimmers can be extremely light because there is no battery mounted on the tool.

They also provide continuous power.

The problem is the extension cord.

You must manage cord length, outlets, obstacles, and the possibility of accidentally cutting the cable.

A cordless string trimmer provides much greater freedom.

For most small residential yards, the slight additional battery weight is worth eliminating the extension cord.

How to Make a Battery Trimmer Feel Lighter

Start by adjusting the shaft and front handle.

A well-balanced trimmer distributes weight between both hands rather than forcing one wrist to support the entire machine.

Use the smallest battery that provides adequate runtime.

Do not automatically install a 5Ah pack for a ten-minute trimming job.

Keep the cutting line at the correct length.

Excessively short line reduces cutting efficiency and can encourage you to push harder.

Finally, let the trimmer head do the work.

Swing it smoothly rather than forcing it directly into thick vegetation.

Frequently Asked Questions

What is the best lightweight battery string trimmer?

The WORX WG163 is my best overall lightweight cordless string trimmer.

It weighs roughly 5.3–5.5 pounds and combines a 12-inch cutting swath, adjustable telescoping shaft, CommandFeed line system, pivoting head, edging wheels, and two 20V batteries.

What is the lightest battery string trimmer?

The LiTHELi U20 Handy+ is the lightest pick among these five models.

Its bare-tool weight is approximately 3.1 pounds, while a recent complete kit configuration weighed around 4.85 pounds with the battery.

Is a 5-pound string trimmer lightweight?

Yes. A cordless string trimmer around 5 pounds is genuinely lightweight.

Many higher-powered battery machines weigh 9–13 pounds once their large batteries are installed, so a 5-pound model substantially reduces the amount of weight supported during trimming.

Is a lightweight string trimmer powerful enough?

Yes, lightweight trimmers provide enough power for maintained grass and light weeds.

They are less suitable for thick woody vegetation and neglected brush, where a larger motor and thicker line are more useful.

Is 20V enough for a string trimmer?

Yes. A 20V trimmer is sufficient for typical residential lawn maintenance.

Voltage alone does not determine performance. Motor efficiency, RPM, line diameter, cutting width, and battery capacity also influence how effectively a machine cuts.

Is 0.065-inch trimmer line good?

Yes, 0.065-inch line works well for lawn grass and light residential weeds.

It keeps rotating mass and power requirements low, helping manufacturers build lighter trimmers. For thick weeds, 0.080- or 0.095-inch line is more durable.

What cutting width is best for a lightweight trimmer?

A 10- to 12-inch cutting width is ideal for most lightweight residential trimmers.

Ten-inch heads provide excellent maneuverability, while 12-inch heads cover more ground without adding the bulk of heavy-duty 15- or 17-inch systems.

Is a 2.0Ah battery enough for a string trimmer?

Yes, particularly for small yards and short trimming sessions.

A 2.0Ah battery keeps weight low. For longer jobs, keeping a second charged battery often makes more sense than carrying a significantly heavier battery all the time.

Is a 4.0Ah battery better than a 2.0Ah battery?

A 4.0Ah battery offers greater capacity, but it usually weighs more.

Choose based on your required runtime. If minimizing arm fatigue is the priority, a smaller battery may provide the better overall experience.

Which lightweight string trimmer is best for edging?

The WORX WG163 is particularly good for combined trimming and edging.

Its rotating head and support wheels make it easier to guide the cutting line consistently along sidewalks and driveways.

Which lightweight trimmer is best for a small yard?

The LiTHELi U20 Handy+ and SENIX GTX2-M are excellent compact-yard choices.

Their approximately 10-inch cutting widths and low operating weights prioritize maneuverability over heavy-duty cutting capacity.

Which lightweight trimmer has the strongest buyer history?

The WORX WG163 has the largest current buyer-review base among these recommendations.

Recent marketplace tracking showed roughly 27,000+ ratings for the model, considerably more than most ultra-light competitors.

Is BLACK+DECKER LST300 lightweight?

Yes. The LST300 weighs approximately 5.7 pounds with its residential 20V design.

It also provides a 12-inch cutting width, automatic line feed, and trimmer-to-edger conversion.

Are lightweight battery trimmers good for older users?

A lower-weight, well-balanced trimmer can reduce the physical effort required for lawn maintenance.

Comfort still depends on individual strength, height, grip, balance, and working time, so adjustable handles and shafts are just as important as total weight.

Do battery string trimmers require maintenance?

Yes, but maintenance is much simpler than with gasoline-powered trimmers.

Keep the cutting head clean, replace worn line or spools, inspect the guard, clean ventilation openings, and store lithium-ion batteries according to the manufacturer’s temperature and charging recommendations.

Final Verdict

The best lightweight battery string trimmer should reduce fatigue without becoming so underpowered that routine lawn maintenance takes twice as long.

The WORX WG163 is my best overall pick. Its approximately 5.3–5.5-pound weight, 12-inch cutting swath, CommandFeed system, telescoping shaft, two-battery kit, pivoting head, and wheeled edging mode create the strongest overall combination for most homeowners.

The LiTHELi U20 Handy+ is the better choice when minimum weight is the overriding concern. Its extremely light design makes quick trimming and edging noticeably easier, particularly on small properties.

The Greenworks 24V 12-Inch Trimmer combines low weight with a larger 4.0Ah battery configuration, making it attractive when you want additional battery capacity without moving to a much heavier high-voltage platform.

The BLACK+DECKER LST300 remains one of the most proven lightweight choices for budget-conscious residential users, while the SENIX GTX2-M is a compact alternative for tight spaces and smaller yards.

For most homeowners, I would target a working weight of roughly 4–6 pounds, a 10- to 12-inch cutting swath, an adjustable handle or shaft, and a lithium-ion battery large enough to finish the actual trimming portion of the yard. That combination delivers the comfort that makes a lightweight cordless trimmer genuinely easier to use rather than simply looking light on a specification sheet.