5 Best Battery String Trimmer Edger: Top Picks and Buying Guide

Finding the best battery string trimmer edger means balancing cutting performance, runtime, handling, line-feed convenience, and the battery system you already use. For most homeowners, the BLACK+DECKER 20V MAX String Trimmer and Edger is the strongest overall choice because it combines a manageable 12-inch cutting width, automatic line feeding, easy edging conversion, and a battery and charger in the kit.

The CRAFTSMAN V20 String Trimmer and Lawn Edger is the clear alternative for larger trimming jobs or anyone who values longer stated runtime and a wider cutting path. Its included 4.0Ah battery, two speed settings, and V20 system compatibility make it particularly appealing when runtime matters more than compactness.

The five options below were compared using their available cutting features, battery capacity and included accessories, adjustment options, line-feed systems, user-control features, and practical limitations. The rankings also consider how well each tool fits common residential lawn-care needs, from quick edging around sidewalks to maintaining a larger yard.

My top recommendation is BLACK+DECKER 20V MAX String Trimmer and Edger because it provides the strongest overall fit among the 5 options compared below.

Best Battery String Trimmer Edger: Quick Comparison

1. BLACK+DECKER 20V MAX String Trimmer and Edger

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The BLACK+DECKER 20V MAX String Trimmer and Edger earns the top position because it offers a particularly well-rounded package for routine residential maintenance. Its 12-inch cutting swath is compact enough for controlled work around flower beds, fences, and walkways while still covering grass efficiently. The POWERDRIVE transmission is designed to deliver more motor power to the cutting string, and the tool operates at up to 6,200 RPM.

Its most convenient feature is the Automatic Feed Spool. Instead of bumping the head against the ground to release more line, the AFS system automatically feeds line when needed. That makes the tool simpler for homeowners who want to move continuously through a yard without stopping to manage the spool. It also converts from a trimmer to an edger in seconds, so maintaining lawn borders does not require a separate tool.

The kit includes a 2.0Ah lithium-ion battery, charger, and a wall-mountable charging base. BLACK+DECKER states that this battery provides 33% more runtime per battery pack than its previous LBXR20 battery pack. The lightweight design, adjustable handle, and adjustable height positions also support better control during longer sessions. Quiet starting and the absence of gas, fuel mixing, and engine maintenance add to its homeowner-friendly character.

The trade-off is that the included 2.0Ah battery is more modest than the CRAFTSMAN’s 4.0Ah battery, and the 12-inch path favors precision over maximum coverage. This is an excellent fit for small to medium residential yards and frequent touch-ups. Before buying, confirm that replacement batteries and other tools in your collection use the same BLACK+DECKER 20V MAX platform. Keep the charging base in a dry location, inspect the line area regularly, and choose another option if you routinely face very large areas of dense growth.

2. CRAFTSMAN V20 String Trimmer and Lawn Edger

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The CRAFTSMAN V20 String Trimmer and Lawn Edger takes second place because it is the strongest alternative for shoppers who want more battery capacity and a wider working path. Its 13-inch cutting swath covers a little more ground per pass than the top-ranked BLACK+DECKER, while the included 4.0Ah V20 battery is intended to provide up to 63 minutes of runtime. Actual runtime will vary with grass density, line use, speed setting, and how continuously the tool is operated, but the larger battery is a meaningful advantage for extended sessions.

CRAFTSMAN also highlights 52% more power than the prior version referenced in its product information. A two-speed design lets the user prioritize runtime or power, which is useful when moving between light grass along a sidewalk and thicker growth at the edge of a property. The tool uses Turn-To-Edge functionality to switch between trimming and edging, and its adjustable handle helps accommodate different users and working positions.

The kit includes the trimmer, one spool using 0.065-inch line, a 4.0Ah V20 battery, and a charger. Its place in the V20 family is important for existing CRAFTSMAN owners: the included battery can be used with other compatible V20 cordless products. That can make the kit more useful over time than a standalone trimmer battery.

Its likely compromises are greater battery weight than a smaller pack and less compact handling than the lightest options. The stated 63-minute figure should not be treated as a guarantee for heavy weeds or constant high-power use. This model suits medium yards, users who dislike frequent charging, and households already invested in CRAFTSMAN V20 tools. Set the handle before beginning, use the lower-speed setting for lighter grass when practical, and check line compatibility before purchasing replacement spools.

3. WORX 20V 12″ 2-in-1 Cordless String Trimmer

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The WORX 20V 12″ 2-in-1 Cordless String Trimmer stands out for control-oriented edging features and strong platform value. It has a 12-inch cutting diameter and a stated 7,600 RPM no-load speed, giving it a useful combination of manageable size and brisk cutting performance. The tool converts from a string trimmer to an edger in seconds, and its rubberized support wheels help guide the head for straighter lines and cleaner borders.

That wheel-assisted design is particularly useful for homeowners who want consistent edging along driveways and paths rather than freehand results. The head tilts through 90 degrees, which can help on sloped terrain and in difficult-to-reach locations. An adjustable spacer guard provides additional protection around plants, ornaments, and landscape features. Those details make this a thoughtful choice for gardens with delicate borders or irregular terrain.

Line management uses a push-button command-feed system. The user can press the button to feed line immediately, avoiding the need to bump the head. WORX also includes free spools for life, according to the supplied product information. The package includes two 20V Power Share MaxLithium batteries, a charger, a trimmer spool, support wheels, and a safety guard. The batteries can also be used with other tools in the WORX Power Share family.

At 5.5 pounds for the machine, it is positioned as a relatively easy-to-handle option, though the total working weight will depend on the installed battery. The 0.065-inch line and 10-inch cutting line length should be considered when buying replacements. Compared with the first two choices, its command-feed system requires a deliberate button press rather than fully automatic feeding. It is a strong match for precise edging, sloped areas, and shoppers who want two included batteries. Keep the spacer guard and wheels correctly installed, and verify that future batteries belong to the WORX Power Share family.

4. 20V Electric Cordless String Trimmer 2 X

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The 20V Electric Cordless String Trimmer 2 X ranks fourth as a compact, storage-friendly option for smaller yards and tight spaces. Its folding shaft can fold 180 degrees in three ways for vertical storage, which may be valuable in an apartment, crowded garage, or shed with limited floor space. The 90-degree adjustable head and 180-degree rotatable handle are designed to make work easier around slopes, underneath benches, and in corners.

The tool uses a 9,500 RPM motor and a 12-inch cutting swath. Those figures suggest a quick, nimble tool for ordinary grass and weeds, although the supplied information cautions against cutting excessively thick or dense growth. It offers two-in-one trimming and edging by pivoting the head, allowing the user to switch tasks without changing tools.

Two 2.0Ah batteries and a charger are included. The product information states up to 30 minutes of total continuous power from the two batteries. That is a relatively limited runtime compared with the CRAFTSMAN’s stated maximum, but having two packs can let the user swap batteries during a job. The automatic line-feed system is intended to dispense cord as needed without manual bumping. If the line breaks, the supplied instructions say to release the trigger, then press and hold the safety lock and switch together to reactivate the tool.

The main limitation is its intended scale: this is better suited to basic lawn maintenance than prolonged work in dense, overgrown vegetation. Runtime and storage convenience are more prominent strengths than heavy-duty endurance. Buyers should allow the batteries to cool for a few minutes after use as recommended, store the folding shaft securely, and keep the cutting head parallel to the ground during operation. It is a sensible fit for small properties, occasional trimming, and anyone who places a high value on compact storage.

5. BLACK+DECKER 40V MAX 13 in String Trimmer

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The BLACK+DECKER 40V MAX 13 in String Trimmer earns fifth place while offering the highest-voltage battery platform in this group and useful power-control features. Its 13-inch cutting width is appropriate for covering more area in each pass, and its POWERDRIVE transmission is designed to transfer more motor power to the cutting string. The tool operates at speeds up to 8,500 RPM, giving it a stronger performance profile for demanding residential trimming than a basic compact model.

A notable feature is the PowerCommand Dial, which lets the user choose maximum power for thick weeds or maximum runtime for longer, lighter trimming sessions. That adjustment is more practical than having only one fixed operating mode, especially when a yard contains both open grass and tougher growth. The automatic feed spool supplies line as needed without bumping, and the tool converts to an edger in seconds.

The kit includes a 40V MAX lithium-ion battery and a fast charger. A battery state-of-charge indicator helps the user monitor remaining power, while BLACK+DECKER states that the charger restores full battery power in two hours or less. Adjustable height and a soft-grip handle are intended to improve comfort during extended use. Together, those features make this a credible choice for homeowners who want a wider path and more control over the power-versus-runtime balance.

The trade-off is platform specificity and likely added bulk compared with smaller 20V models. A 40V MAX battery is not interchangeable with the 20V batteries used by the other BLACK+DECKER option in this roundup. It is best for users who want a 13-inch tool, need stronger settings for heavier weeds, or already own compatible BLACK+DECKER 40V equipment. Check the charge indicator before beginning, use the lower setting when dense growth is not present, and keep the automatic spool clean so line can feed reliably.

How to Choose the Best Battery String Trimmer Edger

A battery string trimmer edger is most useful when it matches the size and condition of your property. The right choice is not determined by motor speed alone. Cutting width, battery capacity, line-feed design, balance, edging guidance, and compatibility with other tools all affect how easy the machine is to live with.

Start with yard size and trimming frequency

For a small lawn, a 12-inch tool can be an advantage rather than a drawback. It is easier to guide around trees, garden borders, fences, and landscape ornaments. The BLACK+DECKER 20V MAX, WORX, and 20V Electric Cordless models all use a 12-inch cutting path, making them well suited to detail work and routine touch-ups.

A 13-inch swath covers slightly more ground per pass. The CRAFTSMAN and BLACK+DECKER 40V models are better aligned with medium-sized properties or users who want to finish open stretches of lawn more quickly. The difference is not enormous, but repeated passes add up when trimming a large perimeter.

Think about how often you trim, too. Frequent light maintenance usually requires less runtime and power than occasional work after grass and weeds have become tall. A compact tool may be easier to pick up for five-minute touch-ups, while a higher-capacity battery becomes more valuable when the entire property is handled in one session.

Understand battery capacity and stated runtime

Battery voltage and amp-hour capacity describe different things. Voltage relates to the tool’s electrical platform, while amp-hour capacity indicates how much charge a battery stores. In general, a larger amp-hour rating can support longer operation, but runtime also changes with grass density, line diameter, cutting width, throttle use, and the condition of the battery.

The CRAFTSMAN kit includes a 4.0Ah battery and states up to 63 minutes of runtime. The BLACK+DECKER 20V model includes a 2.0Ah battery, the WORX package includes two 20V batteries, and the compact 20V Electric Cordless model includes two 2.0Ah batteries with up to 30 minutes of total continuous power stated. The BLACK+DECKER 40V model includes a battery with a charge indicator and a charger rated to restore full power in two hours or less.

Do not compare these figures as if they were laboratory-equivalent measurements. “Up to” runtime is generally a best-case reference, and two batteries may be used sequentially rather than providing uninterrupted operation from one pack. If your property is near the limit of a tool’s stated runtime, a second compatible battery can be more useful than simply choosing a wider cutting head.

Choose the right line-feed system

Line feeding is one of the most noticeable differences in everyday use. Automatic systems, such as the AFS designs on both BLACK+DECKER models, feed line when needed without requiring the user to bump the head. This can reduce interruptions, particularly for people who find manual spool adjustment frustrating.

The WORX uses a push-button command-feed system. It gives the user direct control over when line is released, which can prevent unnecessary feeding but does require a button press. The CRAFTSMAN kit uses a spool that feeds 0.065-inch line, while the supplied information for the compact 20V model describes automatic line feeding and a specific restart procedure after a line break.

Before buying replacement line or spools, check the specified diameter and the manufacturer’s replacement guidance. The WORX and CRAFTSMAN information identifies 0.065-inch line, but that does not mean every spool is interchangeable across brands. Using the wrong line can cause poor feeding, excess strain, or an improperly fitting spool.

Consider edging control, not just the word “edger”

All five products are designed to switch between trimming and edging, but their guidance features differ. A pivoting head provides the basic change in orientation. The WORX adds rubberized wheels that support the edger and help guide a straighter line, plus an adjustable spacer guard for protecting plants and decorative objects.

For a property with long, straight driveway borders, wheels may make it easier to maintain a consistent edge. For irregular beds and tight corners, a freely adjustable head may offer better maneuverability. The BLACK+DECKER, CRAFTSMAN, and other compact models emphasize quick conversion, while the WORX provides the most explicitly guided edging setup in the supplied data.

Edging also uses line differently from ordinary trimming. Work slowly near hard surfaces, avoid striking concrete or metal, and inspect the line afterward. A clean edge depends as much on controlled movement and the correct head position as on motor output.

Match the tool to the vegetation

Motor speed can be informative, but it is not a complete measure of cutting ability. The BLACK+DECKER 40V model reaches up to 8,500 RPM, the WORX lists 7,600 RPM no-load speed, and the compact 20V model lists 9,500 RPM. Meanwhile, the BLACK+DECKER 20V emphasizes its POWERDRIVE transmission and 6,200 RPM, and the CRAFTSMAN emphasizes its motor power and two operating speeds.

For ordinary lawn grass, all of these designs can be appropriate when used within their intended limits. Tall, fibrous weeds and dense overgrowth demand more from the motor, battery, and line. The compact 20V product information specifically advises avoiding excessively thick or dense growth. If overgrown areas are a regular part of your maintenance, prioritize a power mode, stronger transmission design, and a battery that can sustain the job rather than choosing by RPM alone.

Pay attention to comfort and control

Trimming requires repeated sweeping motions, so balance can matter more than a small difference in advertised power. Adjustable handles and shafts help position the cutting head comfortably. The BLACK+DECKER 20V provides adjustable handle and height positions; the CRAFTSMAN has an adjustable handle; and the BLACK+DECKER 40V adds adjustable height and a soft-grip handle.

The WORX lists a 5.5-pound machine weight, though the battery adds to the working load. The compact 20V model focuses on a rotatable handle and folding shaft, which may make it easier to maneuver in confined locations. A larger battery may extend runtime but can also change the tool’s balance. If possible, consider whether you prefer a lighter pack for short sessions or a larger pack to avoid stopping and recharging.

Keep both hands positioned as intended, maintain a stable stance, and avoid stretching to reach beneath shrubs or across slopes. A head that tilts can help access difficult areas, but it does not eliminate the need for controlled footing.

Use battery-platform compatibility strategically

A battery platform can be one of the most important ownership considerations. The CRAFTSMAN trimmer uses the V20 system, and its included battery can serve other compatible V20 cordless tools. The WORX batteries belong to the Power Share family. The two BLACK+DECKER models use different platforms: one is 20V MAX and the other is 40V MAX.

Do not assume batteries can move between platforms simply because they share a brand name or appear similar. Voltage, battery shape, contacts, and electronic controls may differ. A household already equipped with CRAFTSMAN V20 or WORX Power Share tools may save money and storage space by selecting the matching trimmer system, although the listed kits already include their own batteries and chargers.

It is also worth checking charger availability before purchasing additional packs. Keeping one battery charging while another is in use is convenient, but only if you have a compatible charger and a safe, dry place to use it.

Plan basic setup and maintenance

Before the first use, charge the battery according to the manufacturer’s instructions, install the guard and any supplied support wheels correctly, and adjust the handle or shaft. For an edging pass, rotate or pivot the head fully into the intended position rather than trying to cut at an awkward angle. The WORX spacer guard should be positioned to help protect plants and hardscape features.

After each session, remove grass clippings from the head, guard, and ventilation areas once the battery is removed and the tool is safe to handle. Check whether the spool has tangled, inspect the line for excessive wear, and confirm that the head can rotate freely. Automatic feed systems still need a clean spool area to function reliably.

Store batteries indoors in a dry location and avoid leaving them in extreme heat. The compact 20V model’s supplied information recommends allowing batteries to cool for a few minutes after use. That is a sensible practice for cordless equipment generally, especially after sustained operation. Do not charge a visibly damaged battery, and use only the charger intended for the applicable battery platform.

Use the correct safety habits

Wear eye protection and sturdy footwear, and keep bystanders and pets away from the cutting area. Small stones, line fragments, and pieces of dry vegetation can be thrown outward. Before trimming, walk the area and remove loose objects such as sticks, toys, or wire.

Use the guard supplied with the tool and do not bypass safety features. Keep the cutting head away from your legs, hands, and other people. Release the trigger and remove the battery before clearing a jam, replacing a spool, inspecting the head, or transporting the trimmer.

When edging beside concrete, brick, or other hard surfaces, reduce speed if the tool allows it and maintain a controlled position. Hard contact can wear line quickly and may send debris toward nearby surfaces. A deliberate pace usually produces a cleaner edge and reduces unnecessary battery use.

FAQ

What is the best battery string trimmer edger for most homeowners?

The BLACK+DECKER 20V MAX String Trimmer and Edger is the best overall fit for most homeowners in this group. It combines a manageable 12-inch cutting swath, automatic line feeding, quick conversion between trimming and edging, adjustable handling positions, and a battery and charger in the kit. It is particularly well suited to routine maintenance on small to medium residential yards.

Which battery string trimmer edger offers the longest stated runtime?

The CRAFTSMAN V20 String Trimmer and Lawn Edger has the longest stated maximum runtime in the supplied information, with up to 63 minutes from its included 4.0Ah battery. Actual runtime depends on the speed setting, vegetation, line use, and operating conditions, so the figure should be treated as a reference rather than a guarantee.

Are battery string trimmer edgers suitable for thick weeds?

They can handle ordinary grass and many weeds, but performance depends on the tool, battery charge, line condition, and density of the growth. The CRAFTSMAN offers two speed settings, and the BLACK+DECKER 40V model provides a PowerCommand Dial for choosing power or runtime. The compact 20V model is specifically described as unsuitable for excessively thick or dense growth.

Which model is easiest to use for straight lawn edging?

The WORX 20V 12″ 2-in-1 Cordless String Trimmer is the most explicitly designed for guided edging because it includes rubberized wheels that support the edger and help create straighter lines. Its spacer guard can also help protect plants, ornaments, and landscape features near the edge.

Can batteries from these trimmers be used across brands?

No. Battery systems are generally platform-specific. The CRAFTSMAN uses V20, the WORX uses Power Share, and the BLACK+DECKER products listed here use separate 20V MAX and 40V MAX platforms. Confirm compatibility with the tool and charger manufacturer before using any replacement or additional battery.

Conclusion

The BLACK+DECKER 20V MAX String Trimmer and Edger is the most balanced choice for everyday residential trimming and edging. Choose the CRAFTSMAN V20 for longer stated runtime, the WORX for guided edging, the compact 20V model for storage convenience, or the BLACK+DECKER 40V for a wider path and adjustable power control.