Battery-powered string trimmers and trimmer-edgers for lawns and weeds, ranked from live Amazon data.
Ranked by ToolboxTop10 from Amazon data captured Oct 10, 2026. How we rank
A cordless string trimmer handles edges, fences and weeds without gas or a pull cord. We ranked 10 best-sellers from WORX, BLACK+DECKER, EGO, Greenworks and CRAFTSMAN on rating, review volume and features (a 13-inch or wider swath, auto or push-button line feed, an edger mode and a battery in the box).
CRAFTSMAN CMCST901M1CRAFTSMAN V20 owners and anyone wanting long runtime for the money.
Already own batteries?
Batteries only fit their own brand's platform, so the best tool for you is often the best
one that runs on the packs you already have. Here's our top-ranked pick on each platform on this page.
A tool-only model skips the cost of a battery and charger you don't need.
Tools sold as "compatible with" another brand's batteries aren't listed here. They're made by third parties, and the battery brand doesn't warrant them.
Where the deals are
The tools ranked here come from BLACK+DECKER, WORX, EGO, Greenworks, and CRAFTSMAN. Prices on these brands move week to
week on Amazon, and the deepest cuts usually land around Prime Day and Black Friday.
Every price button on this page opens the live listing, so you always see today's
number, not the one we captured on 2026-10-10. If your pick is over budget
right now, check back in a few days — BLACK+DECKER and WORX rotate through sales and bundle
deals often.
The best seller and most-reviewed trimmer here, with 28,563 reviews: a light 20V trimmer that converts to an edger, with a push-button line feed and a head that tilts for slopes.
Best for: Small and medium yards that need trimming and edging.
Skip it if: You have thick weeds; a 15-16 in EGO cuts faster.
Cutting swath
12 in
Line
Push-button command feed
Battery
20V, included
Extras
Head tilts 90°, converts to edger
Pros
28,563 reviews; 6,000+ sold last month
Trimmer and edger
Push-button line feed
Cons
12 in swath
4.3 stars
#3
Best Budget
BLACK+DECKER
BLACK+DECKER 20V MAX 12" String Trimmer and Edger with Auto Feed (LST300)
4.49,701 reviews
Score 85/100
Why this score
Star rating 45% of score88/100 → 40 pts
Number of reviews 35% of score89/100 → 31 pts
Features 20% of score70/100 → 14 pts
Has: auto feed, edger, battery included. Missing: wide swath.
A CRAFTSMAN kit with a big 4.0Ah battery for up to 63 minutes, a 13-inch swath and an edger mode, rated 4.6 stars.
Best for: CRAFTSMAN V20 owners and anyone wanting long runtime for the money.
Skip it if: You want a long track record; it has 194 reviews.
Cutting swath
13 in
Line
.065 in
Battery
V20 4.0Ah, included
Extras
Up to 63 min runtime, adjustable height
Pros
4.0Ah battery included
Up to 63 min
4.6 stars
Cons
Only 194 reviews
How we rank
Every tool gets one score from 0 to 100, weighted
45% on its star rating,
35% on how many people have reviewed it (more reviews = more
confidence the rating is real), and 20% on the features that
matter for the job. The list is ordered by that score. Best Overall is our pick for the
best all-around, ready-to-use tool; Best Budget the best value at or under
$90; and Money No Object the one to buy if price is no object.
The features score is built from wide swath (30%), auto feed (25%), battery included (25%), edger (20%), capped at 100. The review-count score is on a log scale, so each tenfold jump in reviews adds the same amount, and 30,000 or more reviews gets full marks. Open Why this score on any tool to see its numbers.
What changed
We re-check every listing on this page on a rotation. The most recent changes:
Page published with 10 ranked picks and 1 tool to avoid.
Buyer's guide
How wide a swath do I need?
10 to 12 inches suits small yards and edges. 13 to 16 inches finishes bigger properties faster and handles thicker growth.
What does line thickness change?
Thicker line (.080 to .095 in) cuts weeds and tough grass without snapping. Thin line (.065 in and below) is fine for grass edges and small yards.
Auto feed or bump feed?
Auto feed advances line without tapping the head on the ground. EGO's POWERLOAD winds new line at the push of a button. Both save time over refilling spools by hand.
Do I need an edger mode?
If you want clean lines along sidewalks and driveways, yes. 2-in-1 trimmers rotate the head and add a wheel for edging.
20V, 40V or 56V?
20V is light and fine for small yards. 40V and EGO's 56V run longer and cut thicker growth. Pick the platform you'll use for other yard tools.
Tools to avoid
Not everything in the search results deserves your money.
This one would rank dead last on our scale — here's the listing to walk past, and exactly why.
✕ Avoid
Houselife
Cordless Weed Wacker Compatible with DEWALT 20V Max Battery, Tool Only
4.1657 reviews$49.99
A DEWALT-battery knockoff sold as a 'professional-grade' 3-in-1 that runs thinner line than anything we rank and feeds line every time you start it.
Why we'd skip it
It uses 0.055 in trimmer line, thinner than the .065 to .095 in line on the trimmers we rank; thin line snaps quickly on weeds.
Its auto-feed 'releases 0.4" of line every time you start the tool', which burns through line on short jobs.
DEWALT owners can buy a DEWALT-made trimmer; for budget buyers, the WORX WG154 and BLACK+DECKER kits include a battery and have thousands of reviews.
