Best Auto Feed Weed Eater: Corded and Cordless Options Compared

#1 · Best Overall

1. BLACK+DECKER LST300

• Dimensions L x W: 36.23"L x 8.5"W
• Weight: 5.7 lb
• Size: One Size

Best for: For cordless trimming and edging.

Why it ranks #1: AFS automatically feeds line without bumping; the 12-inch trimmer converts to an edger and includes a 20V MAX battery, charger, and spool.

The LST300 converts from string trimming to wheeled edging in seconds, giving yard owners two lawn-care functions in one cordless tool. Its Automatic Feed Spool advances line when needed without bumping, while the included 20V MAX battery and charger make it a complete listed kit.

A 12-inch cutting width and POWERDRIVE transmission rated at 6200 RPM connect to faster cutting through overgrowth, while the automatic spool feed avoids stopping to bump the head for line. The adjustable handle and 5.7-pound listed weight support manageable handling during trimming and edging. Since the package includes a battery, charger, spool, and guard, buyers can start with the supplied components rather than sourcing those listed essentials separately.

Skip it if you want a wider listed cutting path; the BLACK+DECKER BESTA510 offers a 14-inch path and runs from a cord.

Choose the LST300 for cordless routine trimming and edging, especially when automatic spool feed and included battery equipment matter. Its 12-inch path suits buyers comfortable with a narrower cut than some corded alternatives.

Listed on Amazon as: BLACK+DECKER 20V MAX String Trimmer and Edger 2 in 1, Cordless Weed Wacker with Auto Spool Feed, Battery and Charger Included, 12 Inch Steel Deck, Reduced Vibration (LST300)

#2 · Best Corded Option

2. BLACK+DECKER BESTA510

• Dimensions L x W: 8.5"L x 4.88"W
• Weight: 6.3 lb
• Size: One Size

Best for: For corded wide-path yard work.

Why it ranks #2: Its automatic feed spool avoids bumping, while the 6.5-amp motor, 14-inch cutting width, and wheeled edging guide suit sustained yard work.

A 14-inch cutting path gives the BLACK+DECKER BESTA510 a wider swath for trimming grass, weeds, and overgrowth. Its automatic-feed spool advances line without bumping, and the 6.5-amp motor with POWERDRIVE transmission pairs that feed system with a corded 2-in-1 trimmer and wheeled edger.

The 6.5-amp motor and POWERDRIVE transmission are specified to tackle tough weeds, grass, and overgrowth, while the 14-inch path covers a broad strip in each pass. Automatic Feed Spool technology helps maintain work without bumping for more line. Rotate the tool to switch between trimming and wheeled edging, with the edge guide helping finish along drives, sidewalks, and flower beds. The corded electric design avoids battery charging but requires access to a power outlet and cord management.

Skip it if you need cordless movement away from outlets; the EWORK EK-DST30A-2MR1 includes two 20V batteries and a charger.

Pick the BESTA510 for wider-path trimming and wheeled edging where an outlet is accessible. Its corded setup suits defined work areas, but the power cord affects movement and requires attention during use.

Listed on Amazon as: BLACK+DECKER Weed Wacker with Auto Feed, 14-Inch 2 in 1 String Trimmer Lawn Edger, Powerful 6.5-Amp Lightweight Electric Weed Eater (BESTA510)

#3 · Best Variable-Speed Pick

3. Greenworks 2101602

• Dimensions L x W: 12"L x 0.65"W
• Weight: 12 lb
• Size: 12" (Battery Included)

Best for: For adjustable lawn trimming.

Why it ranks #3: The automatic feed system advances line without bumping, and variable-speed control lets users adjust power; the kit includes a 40V 2.0 Ah battery and charger.

Greenworks pairs automatic line advancement with variable-speed control, letting lawn owners maintain line feed while adjusting power to the task. Its 12-inch dual-line cutting system is specified for grass and light weeds around lawns, sidewalks, and landscaping, and the 40V kit includes a 2.0 Ah battery and charger.

The 0.065-inch dual line and 12-inch cutting path support consistent trimming along sidewalks and landscaped areas, while the automatic-feed system advances line without bumping. A variable-speed trigger lets the operator adjust power for different tasks rather than using one fixed speed. The supplied 40V, 2.0 Ah battery and charger make this a cordless kit, and the listed 12-pound weight is worth considering for longer sessions or frequent repositioning.

Skip it if you prioritize a lighter listed tool for frequent repositioning; the WORX WG163 weighs 5.5 pounds and also converts to edging.

This Greenworks model fits buyers trimming grass and light weeds who want adjustable speed and automatic feed in a 40V kit. Consider its listed 12-pound weight when planning extended work or carrying it across a large yard.

Listed on Amazon as: Greenworks 40V 12 in Cordless String Trimmer, 2.0 Ah Battery and Charger

#4 · Best 13-Inch Cordless

4. WORX WG183

• Dimensions L x W: 63"L x 14.7"W
• Weight: 6.4 lb
• Size: No Size

Best for: For WORX battery-platform owners.

Why it ranks #4: This 40V model pairs a 13-inch cutting head with an automatic-feed spool and includes two 2.0 Ah batteries for cordless trimming.

WORX Power Share compatibility is the practical draw of the WG183: its batteries work across WORX 20V and 40V tools and outdoor products. The 40V, 13-inch cordless trimmer also has an automatic-feed spool and dual-exit cutting head, combining line advancement with a broad cutting path.

The automatic-feed spool advances line during operation, reducing the need to stop and manage line manually, while the dual-exit head is specified for greater cutting efficiency. Its 13-inch path covers more ground per pass than a 12-inch model, and the adjustable auxiliary handle supports a customized grip. The listing identifies two 2.0 Ah batteries, making the kit useful for owners of compatible WORX tools who want to share the Power Share platform.

Skip it if you need a stated trimmer-to-edger conversion; the WORX WG163 changes modes and has rubberized wheels to guide edging.

The WG183 suits WORX Power Share owners who want a 13-inch cordless trimmer with automatic feed and an adjustable auxiliary handle. Choose another format if edging conversion is a required part of your routine.

Listed on Amazon as: Worx Cordless String Trimmer, 40V 13" Electric Weed Wacker, WG183

#5

5. Heywork 20V Trimmer

• Dimensions L x W: 17.32"L x 6.69"W
• Size: 12-inch

Best for: For automatic-feed trimming and edging.

Why it ranks #5: Its listed automatic line-feed system releases line as it wears short, and its 12-inch head switches between trimming and edging.

Heywork's automatic line-feed system releases fresh line as the existing line wears short, reducing interruptions to tap or bump the spool. Its 20V, 12-inch trimmer also switches between trimming and edging, with an 8000 RPM motor specified for lawn edges, flower beds, driveways, and general weed removal.

Automatic line release keeps the trimming workflow moving when line wears short, while the 2-in-1 setup switches between trimming and edging for borders, beds, and driveways. The 8000 RPM motor supplies the stated high-speed cutting specification for those routine yard tasks, and the 12-inch size defines the listed cutting format. Its 20V cordless designation avoids a trailing power cord during use. The product information does not state battery or charger inclusion, so kit contents should be checked before planning a first session.

Skip it if you need a kit explicitly listing batteries and charger; the EWORK EK-DST30A-2MR1 includes two 20V batteries and a charger.

Heywork suits buyers seeking automatic line advancement and a single tool for routine trimming and edging around beds and driveways. Check the supplied kit details first, since battery and charger inclusion is not stated.

Listed on Amazon as: 20V 12" Cordless String Trimmer, Electric Weed Wacker & Edger

#6

6. Boltarc RT-01

• Dimensions L x W: 47.16"L x 6.28"W

Best for: For three-mode cordless yard care.

Why it ranks #6: The product title explicitly identifies an auto-feed, 3-in-1 cordless trimmer, but the supplied specifications give no cutting width, battery capacity, or included kit details.

Its 3-in-1 configuration is the central reason to consider this Boltarc: it combines a cordless 21V platform with an automatic-feed string trimmer format for buyers seeking more than a single-purpose yard tool. The listing identifies the model as RT-01 and gives its overall length as 47.16 inches.

The 21V cordless specification supports working without a power cord trailing across the yard, while the automatic-feed line system can advance line during trimming without manual bumping. Its 3-in-1 designation signals multiple functions in one tool, though the supplied information does not identify those modes, so buyers should not assume a particular edging or other configuration. The listed 47.16-inch length gives a useful sense of its overall reach and storage footprint before choosing a place for it.

Skip it if you need named trimming and edging modes; the BLACK+DECKER LST300 explicitly converts between those two functions.

Boltarc suits shoppers focused on a cordless 21V trimmer with automatic line feed and a stated three-in-one format. It is a less clear fit when the exact extra functions matter, because the listing does not name them.

Listed on Amazon as: 21V Cordless Weed Wacker Eater, 3-in-1 Auto Feed String Trimmer

#7

7. EWORK EK-DST30A-2MR1

• Dimensions L x W: 41"L x 9"W
• Weight: 7.8 lb

Best for: For battery-swapping yard sessions.

Why it ranks #7: Package details include two 20V 2.0 Ah batteries and a charger; verified instructions describe auto-feed activation, though line must extend four inches first.

Two included 20V, 2.0 Ah batteries let EWORK owners swap packs when one runs low, extending a trimming session without waiting on a recharge. The cordless 2-in-1 tool has a 12-inch cutting diameter and a 9000 RPM motor, with automatic feed triggered by sufficient exposed line.

The 9000 RPM motor and 12-inch cutting diameter are specified for thick weeds, tall grass, and broader coverage during yard work. Two 20V, 2.0 Ah batteries and a charger are included, so a depleted pack can be exchanged for the second rather than ending work to recharge. The auto-feed instructions call for four inches of exposed line to trigger advancement, a practical setup detail to check before powering on. Its listed weight is 7.8 pounds.

Skip it if you want a lighter listed tool; the goodjob GB-DST26A-2MG is specified at 3.5 pounds and includes two batteries.

EWORK suits buyers who value a spare battery, a 12-inch cutting diameter, and a high-speed motor for tougher vegetation. Its 7.8-pound listed weight and line-exposure requirement are relevant handling and setup considerations.

Listed on Amazon as: EWORK 2-in-1 Cordless Weed Wacker & Edger, 20V 12'' Electric Weed Eater

#8

8. WORX WG163

• Dimensions L x W: 44.6"L x 35"W
• Weight: 5.5 lb
• Size: 20V GT 3.0 Trimmer / Edger

Best for: For guided cordless lawn edging.

Why it ranks #8: It converts between trimming and edging and includes two batteries, but its push-button Command Feed is user-activated rather than automatic.

The WORX WG163 turns from trimmer to edger in seconds, and its rubberized wheels guide the edging pass for straighter lines. A 90-degree tilting head also reaches sloped terrain and difficult spots, making its 20V cordless format useful for lawns that need both trimming and edge work.

Its push-button Command Feed advances line when requested, so the operator can control feeding without bumping the spool. For edging, the rubberized wheels provide support and guidance, while the head's 90-degree tilt helps reach slopes and tight areas. The listed kit includes two batteries, a charger, an edger wheel, and spool components, bringing key operating parts together. At 5.5 pounds, the stated weight is manageable for switching between lawn edges and trimming areas.

Skip it if you want hands-off line advancement; the WORX WG183 lists an automatic-feed spool and a 13-inch cutting path.

The WG163 fits homeowners who want one cordless tool for trimming and guided edging, including sloped areas. Its line feed requires a button press, so buyers seeking automatic advancement should choose a different feed system.

Listed on Amazon as: WORX 20V 12" 2-in-1 Cordless String Trimmer & Electric Lawn Edger, WG163

#9

9. ALSO GO 21V Trimmer

• Dimensions L x W: 49.21"L x 12"W
• Size: 12 in

Best for: For cordless trimming with adjustable edging.

Why it ranks #9: The 12-inch trimmer includes two 2000mAh batteries and a fast charger, but the supplied details do not confirm an automatic line-feed system.

A rotating head adjusts from zero to 90 degrees, letting the ALSO GO 21V trimmer switch between trimming and edging, including work on slopes. Its 9500 RPM motor and 12-inch cutting swath support coverage through dense grass, while two 2000mAh batteries and a fast charger round out the cordless kit.

The 12-inch swath and 9500 RPM motor are specified for cutting performance through dense grass, while rotating the head through a 90-degree range makes it possible to change between trimming and edging. That adjustment is particularly relevant around slopes and lawn borders. Two 2000mAh batteries provide replacement packs during a longer session, and the included fast charger addresses recharging between uses. The listed product dimensions are 49.21 by 12 inches, a useful reference when considering storage space.

Skip it if you need a specified automatic line-feed feature; the Heywork G-DC2505-HY lists automatic line release as the line wears short.

The ALSO GO fits cordless users who want adjustable trimming and edging, a 12-inch swath, and two rechargeable packs. Consider the listed 2000mAh capacity when deciding whether its battery setup fits your session length.

Listed on Amazon as: 21V Electric Cordless Weed Wacker,Battery Powered Weed Eater String Trimmer

#10

10. goodjob 20V Trimmer

• Dimensions L x W: 1"L x 1"W

Best for: For lightweight cordless maintenance.

Why it ranks #10: Its listed details focus on a 3.5-pound cordless design and two batteries; they do not identify an automatic line-feed system, making it a weak keyword fit.

At a listed 3.5 pounds, the goodjob cordless trimmer emphasizes low weight for lawn, garden, patio, and sidewalk maintenance. Its 20V lithium-ion system is described as delivering steady power for trimming, edging, and clearing weeds, while two included batteries support longer use by providing a swap option.

The 3.5-pound specification can make carrying and repositioning the tool less burdensome for routine yard tasks, and the 20V lithium-ion system is presented for trimming, edging, and weed clearing. Two batteries provide a practical backup: swap packs when one runs down rather than stopping immediately to recharge. The supplied information does not state a cutting width or identify an automatic-feed mechanism, so buyers prioritizing those particular specifications should compare the listed details carefully before choosing.

Skip it if you require a stated cutting swath and automatic feed; the Greenworks 2101602 specifies a 12-inch path and auto-feed line system.

This goodjob model suits buyers prioritizing a light cordless tool for routine garden and sidewalk maintenance, with two batteries on hand. It is a less certain fit when a specified cutting width or feed mechanism is essential.

Listed on Amazon as: 20V Cordless Weed Wacker, Battery Powered Weed Eater with 2 Batteries