Here are the best battery powered cordless electric string trimmers / edgers (also known as weed wackers). We have organized these lawn trimmers into a few different lists to suit your needs.
Table of Contents
- 10 Best Cordless Electric String Trimmer (Overall)
- 10 Best Cordless String Trimmer & Blower Combo
- 5 Best Cordless String Trimmer with Automatic Feed (Easy Feed)
- 5 Best 20v Cordless String Trimmer
- 5 Best 40v Cordless String Trimmer
- 5 Best Lightweight Cordless String Trimmer
- 5 Best Electric Weed Trimmer for the Money
10 Best Cordless Electric String Trimmer (Overall)
1 
BLACKDECKER 20V Max String 12-Inch LSTE525
Product Highlights:
- converts from trimmer to wheeled edger; amp hour: (2) 1.5 ampere hour
- power drive transmission for increased torque
- 2 speed control for more power or extended runtime. line diameter: 0.065 inches; cutting swath 12 inches
2 
WORX WG163 GT 30 String Trimmer & Edger
Product Highlights:
- [trimmer & edger 2-in-1] easily converts from a string trimmer to a wheel edger in just seconds
- [instant line feed] innovative push button command feed spool system for instant line feeding. plus, free spools for life
- [do it all with the same battery] worx power share is compatible with all worx 20v and 40v tools, outdoor power and lifestyle products
3 
BLACKDECKER 40V Max Cordless Trimmer Combo Kit LCC340C
Product Highlights:
- lst140 40 volt max string trimmer/edger with power drive high torque transmission for clean, fast cuts
- automatic feed spool afs automatically feeds trimmer line as needed
- lsw40 40 volt max sweeper a wind speed of up to 130 mph easily clear debris from hard surfaces
4 
WORX WG154 20V PowerShare String Trimmer & Edger
Product Highlights:
- convert trimmer easily to an edger and vice versa in seconds
- convert the cutting path for a wider cut or extended run time
- fixed ergonomic front handle for maximum control. charging time: ≈ 5 hours
5 
Greenworks 24V 12Inch String And Charger Included 21342
Product Highlights:
- pivoting head allows for edging and trimming capability with edging wheel
- electric start eliminates gas hassle, less maintenance and 0 fumes; handle type: wrap around
- 12 inch cut path with .065 single line auto feed for easy line advance
6 
PowerSmart String Trimmer 20 Cordless Trimmer/Edger Only 7. 5 Pounds, PS76110A
Product Highlights:
- 2-in-1 trim or edge - easily converts from trimmer to edger in seconds， adjustable handle for comfortable cutting, ergonomic design, precise working, professional quality!
- 20v lithium ion cordless string trimmer, 1. 5ah super battery capacity, long life, only needs 1 hour charged can meet your working requirements.
- automatic feed spool - afs automatically feeds trimmer line as needed
7 
Greenworks GMAX 40V Cordless Battery And Charger Included STBA40B210
Product Highlights:
- up to 45 minutes of run time with fully charged 2.0ah battery, battery and charger included
- the innovative axial fan design delivers 110 mph and 390 cfm to handle tough clearing jobs
- light weight and easy to use
8 
BLACKDECKER 20V MAX String 12-Inch LSTE523
Product Highlights:
- converts from trimmer to wheeled edger; line diameter 0.065 inch
- power drive transmission for increased torque
- 2 speed control for more power or extended runtime. maximum initial battery voltage (measured without a workload) is 20 volts. nominal voltage is 18
9 
BLACKDECKER 20V MAX String Combo Kit, 10-Inch LCC222
Product Highlights:
- sweeper is ideal for clearing driveways, sidewalks, decks, garages
- string trimmer features automatic feed spool; no bumping required
- lightweight design, low noise levels
10 Best Cordless String Trimmer & Blower Combo
1
BLACKDECKER 40V Max Cordless Trimmer Combo Kit LCC340C
Product Highlights:
- lst140 40 volt max string trimmer/edger with power drive high torque transmission for clean, fast cuts
- automatic feed spool afs automatically feeds trimmer line as needed
- lsw40 40 volt max sweeper a wind speed of up to 130 mph easily clear debris from hard surfaces
2 
BLACKDECKER 20V MAX String Combo Kit, 10-Inch LCC221
Product Highlights:
- sweeper is ideal for clearing driveways, sidewalks, decks, garages
- string trimmer features automatic feed spool; no bumping required
- lightweight design, low noise levels. sweeper has lightweight design of only 3.7 pounds, string trimmer has lightweight design of only 4.5 pounds
3 
PowerSmart PS76115A 20V LithiumIon Kit Include Two Battery And Charger
Product Highlights:
- powerful 20v lithium ion cordless string trimmer/blower combo kit,1.5ah super battery capacity, long life, only needs 1 hour charged can meet your working requirements.
- string trimmer: 2-in-1 trim or edge - easily converts from trimmer to edger in seconds,
- string trimmer: automatic feed spool, ultra-lightweight,only 6.2 pounds,cutting diameter 10 inches,line diameter: 0.065 inch, no-load speed : 8200rp
4
BLACKDECKER 20V MAX String Combo Kit, 10-Inch LCC222
Product Highlights:
- sweeper is ideal for clearing driveways, sidewalks, decks, garages
- string trimmer features automatic feed spool; no bumping required
- lightweight design, low noise levels
5 
Greenworks 24V Cordless String And Charger Included STBA24B210
Product Highlights:
- innovative walk behind edging for a clean edge every time
- the innovative axial fan design delivers 100 mph and 300 cfm to clear hard surfaces quickly
- light weight and easy to use
6 
WORX WG9302 20V Power Turbine Leaf Blower Combo Kit
Product Highlights:
- [3-in-1] the gt revolution converts from a trimmer, into an in-line wheeled edger, into a mini-mower in seconds. no tools needed, just push a button and turn
- [command feed] you decide when you need more line with innovative on-demand command feed technology. just press the button and you get instant line
- [do it all with the same battery] worx power share is compatible with all worx 20v and 40v tools, outdoor power and lifestyle products
7
Greenworks GMAX 40V Cordless Battery And Charger Included STBA40B210
Product Highlights:
- up to 45 minutes of run time with fully charged 2.0ah battery, battery and charger included
- the innovative axial fan design delivers 110 mph and 390 cfm to handle tough clearing jobs
- light weight and easy to use
8 
WORX WG928 GT 30 Blower Combo Kit, Black And Orange
Product Highlights:
- [bundle & save] if you bought these two powerful and easy to operate lawn tools separately, it would cost you way more. plus, we threw in two batteries and a quick charger
- [trimmer & edger in 1] converts from a trimmer into an edger with just a pivot of the head. looks like this two-tool bundle really has three tools
- [do it all with the same battery] worx power share is compatible with all worx 20v and 40v tools, outdoor power and lifestyle products
9 
WORX Cordless String Trimmer Batteries, Grass Weed Edger
Product Highlights:
- includes (2) 20v 2.0ah li-ion batteries for extended run time
- 12" 20v li-ion cordless grass trimmer/edger wg162 and turbine cordless blower wg547
- trimmer converts easily to an edger or mini-mower in seconds
10 
Makita LithiumIon Brushless Cordless 2-Pc. Combo Kit 4.0 Ah
Product Highlights:
- blower with bl brushless motor delivers up to 459 cfm of air volume and 116 mph air velocity
- blower features cruise control lever on variable speed trigger for power and run time management
- in-line fan design on blower provides better tool balance and improved ergonomics
5 Best Cordless String Trimmer with Automatic Feed (Easy Feed)
1 
BLACKDECKER 20V MAX String 12-Inch, Cordless LST522
Product Highlights:
- automatic feed spool (afs) feeds edger/ trimmer line as needed - without bumping.
- lbxr2520 battery provides cordless grass trimmer 66% more battery capacity for longer runtime compared to lbxr20
- 2-speed control lets you boost power or extend runtime of the lawn trimmer.
2 
BLACKDECKER 20V MAX String Kit, 10-Inch LST201
Product Highlights:
- part of the 20v max system; 1 system - endless tasks. power for your style
- converts from trimmer to edger
- automatic feed spool (afs) automatically feeds trimmer line
3
PowerSmart String Trimmer 20 Cordless Trimmer/Edger Only 7. 5 Pounds, PS76110A
Product Highlights:
- 2-in-1 trim or edge - easily converts from trimmer to edger in seconds， adjustable handle for comfortable cutting, ergonomic design, precise working, professional quality!
- 20v lithium ion cordless string trimmer, 1. 5ah super battery capacity, long life, only needs 1 hour charged can meet your working requirements.
- automatic feed spool - afs automatically feeds trimmer line as needed
4 
Beyond By BLACKDECKER 20V 12-Inch LST522E1AEV
Product Highlights:
- 2 speed control: choose between more power for tough jobs or longer run time for routine trimmings
- more power when you need it: patented powerdrive transmission increases brush cutter torque to handle overgrowth
- work faster: patented automatic feed spool keeps your cutting line at 12" to cover a larger area and save you time
5 
BLACKDECKER BESTA510 String Trimmer String Trimmer
Product Highlights:
- automatic feed spool (afs) technology of the edger/trimmer eliminates bumping for hassle-free line feeding that helps you work without interruptions
- the 6.5 amp motor and powerdrive transmission of the grass cutter provide maximum performance when trimming through the toughest weeds, grass, and overgrowth
- 2-in-1 trimmer/edger with wheeled edge guide - just rotate to convert from lawn trimmer to wheeled edger
5 Best 20v Cordless String Trimmer
1
BLACKDECKER 20V Max String 12-Inch LSTE525
Product Highlights:
- converts from trimmer to wheeled edger; amp hour: (2) 1.5 ampere hour
- power drive transmission for increased torque
- 2 speed control for more power or extended runtime. line diameter: 0.065 inches; cutting swath 12 inches
2
BLACKDECKER 20V MAX String 12-Inch, Cordless LST522
Product Highlights:
- automatic feed spool (afs) feeds edger/ trimmer line as needed - without bumping.
- lbxr2520 battery provides cordless grass trimmer 66% more battery capacity for longer runtime compared to lbxr20
- 2-speed control lets you boost power or extend runtime of the lawn trimmer.
3 
Dewalt DCST925B String Trimmer Trimmer, Yellow/Black
Product Highlights:
- the edger/trimmer provides 13-inch cutting swath with 0.080-inch line
- gear drive transmission design of the cordless grass trimmer powers through overgrowth
- variable trigger with high/low speed control of the lawn trimmer is designed for added power or extended runtime
4
BLACKDECKER 20V MAX String 12-Inch LSTE523
Product Highlights:
- converts from trimmer to wheeled edger; line diameter 0.065 inch
- power drive transmission for increased torque
- 2 speed control for more power or extended runtime. maximum initial battery voltage (measured without a workload) is 20 volts. nominal voltage is 18
5
PowerSmart String Trimmer 20 Cordless Trimmer/Edger Only 7. 5 Pounds, PS76110A
Product Highlights:
- 2-in-1 trim or edge - easily converts from trimmer to edger in seconds， adjustable handle for comfortable cutting, ergonomic design, precise working, professional quality!
- 20v lithium ion cordless string trimmer, 1. 5ah super battery capacity, long life, only needs 1 hour charged can meet your working requirements.
- automatic feed spool - afs automatically feeds trimmer line as needed
5 Best 40v Cordless String Trimmer
1
Greenworks GMAX 40V Cordless Battery And Charger Included STBA40B210
Product Highlights:
- up to 45 minutes of run time with fully charged 2.0ah battery, battery and charger included
- the innovative axial fan design delivers 110 mph and 390 cfm to handle tough clearing jobs
- light weight and easy to use
2
BLACKDECKER 40V Max Cordless Trimmer Combo Kit LCC340C
Product Highlights:
- lst140 40 volt max string trimmer/edger with power drive high torque transmission for clean, fast cuts
- automatic feed spool afs automatically feeds trimmer line as needed
- lsw40 40 volt max sweeper a wind speed of up to 130 mph easily clear debris from hard surfaces
3 
BLACKDECKER 40V MAX String 13-Inch LST140C
Product Highlights:
- high-performance 40v max lithium ion battery with state of charge indicator that shows remaining power
- power drive high-torque transmission gives you cutting power at the string for clean, fast cuts. nominal voltage is 36.
- automatic feed spool - afs which automatically feeds trimmer line as needed with no bumping
4 
RYOBI 40Volt LithiumIon Cordless 4.0 Ah Battery And Charger Inc
Product Highlights:
- attachment capable: accepts ryobi expand-it attachments and other universal gas attachments to save time, money and space
- 40-volt lithium-ion high capacity battery and 90-minutes charger included
- 13 in. to 15 in. adjustable cutting width for longer run time or wider cutting path
5 
Greenworks 40V 13Inch Cordless Battery Not Included, 21332
Product Highlights:
- high performance g-max 40v lithium-ion battery delivers fade-free power with no memory loss after charging
- 13-inch cutting path for quick and easy trimmer with powerful results to cut through the toughest weeds
- versatile design with 3-position pivoting head for easy trimming at multiple angles. rpm : 8000
5 Best Lightweight Cordless String Trimmer
1
WORX WG154 20V PowerShare String Trimmer & Edger
Product Highlights:
- convert trimmer easily to an edger and vice versa in seconds
- convert the cutting path for a wider cut or extended run time
- fixed ergonomic front handle for maximum control. charging time: ≈ 5 hours
2
Greenworks 24V 12Inch String And Charger Included 21342
Product Highlights:
- pivoting head allows for edging and trimming capability with edging wheel
- electric start eliminates gas hassle, less maintenance and 0 fumes; handle type: wrap around
- 12 inch cut path with .065 single line auto feed for easy line advance
3
PowerSmart String Trimmer 20 Cordless Trimmer/Edger Only 7. 5 Pounds, PS76110A
Product Highlights:
- 2-in-1 trim or edge - easily converts from trimmer to edger in seconds， adjustable handle for comfortable cutting, ergonomic design, precise working, professional quality!
- 20v lithium ion cordless string trimmer, 1. 5ah super battery capacity, long life, only needs 1 hour charged can meet your working requirements.
- automatic feed spool - afs automatically feeds trimmer line as needed
4 
WORX WG162 20V Power Trimmer & Lawn Edger
Product Highlights:
- [trimmer & edger in one] save time and money with this cordless string trimmer & edger 2-in-1. there’s no need to buy a separate edger
- [converts in seconds] just pull the head and the shaft away from each other and twist to turn your trimmer into an edger and back again
- [do it all with the same battery] worx power share is compatible with all worx 20v and 40v tools, outdoor power and lifestyle products
5
WORX WG163 GT 30 String Trimmer & Edger
Product Highlights:
- [trimmer & edger 2-in-1] easily converts from a string trimmer to a wheel edger in just seconds
- [instant line feed] innovative push button command feed spool system for instant line feeding. plus, free spools for life
- [do it all with the same battery] worx power share is compatible with all worx 20v and 40v tools, outdoor power and lifestyle products
5 Best Electric Weed Trimmer for the Money
1
Greenworks 24V 12Inch String And Charger Included 21342
Product Highlights:
- pivoting head allows for edging and trimming capability with edging wheel
- electric start eliminates gas hassle, less maintenance and 0 fumes; handle type: wrap around
- 12 inch cut path with .065 single line auto feed for easy line advance
2
PowerSmart String Trimmer 20 Cordless Trimmer/Edger Only 7. 5 Pounds, PS76110A
Product Highlights:
- 2-in-1 trim or edge - easily converts from trimmer to edger in seconds， adjustable handle for comfortable cutting, ergonomic design, precise working, professional quality!
- 20v lithium ion cordless string trimmer, 1. 5ah super battery capacity, long life, only needs 1 hour charged can meet your working requirements.
- automatic feed spool - afs automatically feeds trimmer line as needed
3
WORX WG163 GT 30 String Trimmer & Edger
Product Highlights:
- [trimmer & edger 2-in-1] easily converts from a string trimmer to a wheel edger in just seconds
- [instant line feed] innovative push button command feed spool system for instant line feeding. plus, free spools for life
- [do it all with the same battery] worx power share is compatible with all worx 20v and 40v tools, outdoor power and lifestyle products
4
BLACKDECKER 40V Max Cordless Trimmer Combo Kit LCC340C
Product Highlights:
- lst140 40 volt max string trimmer/edger with power drive high torque transmission for clean, fast cuts
- automatic feed spool afs automatically feeds trimmer line as needed
- lsw40 40 volt max sweeper a wind speed of up to 130 mph easily clear debris from hard surfaces
5
Greenworks 40V 13Inch Cordless Battery Not Included, 21332
Product Highlights:
- high performance g-max 40v lithium-ion battery delivers fade-free power with no memory loss after charging
- 13-inch cutting path for quick and easy trimmer with powerful results to cut through the toughest weeds
- versatile design with 3-position pivoting head for easy trimming at multiple angles. rpm : 8000
Patrick Cooper
Patrick has over a decade’s experience writing about consumer electronics on the web. An avid traveller, he is the father of two adopted pitbulls and a greyhound. Cheif editor at WhatRocksAndWhatSucks.com, right now Patrick lives in Austin, TX. Reach him at patrick@wraws.com.