56v vs 40v String Trimmer: Which Voltage Should You Buy?
56v and 40v string trimmers compared on voltage, runtime, cutting swath, weight and batteries, with three examples from the listings reviewed.
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Top picks at a glance
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- 1
EGO Power+ ST1502LB 56V 15 in Trimmer and 530 CFM Blower Combo9.7/10View on Amazon - 2
Worx 40V 15 Inch Cordless String Trimmer9.7/10View on Amazon - 3
EGO Power+ 56V 16-Inch String Trimmer with POWERLOAD9.6/10View on Amazon - 4
EGO STA1600 16-Inch Carbon Fiber String Trimmer AttachmentView on Amazon - 5
EGO POWER+ Rapid Reload Trimmer HeadView on Amazon - 6
EGO POWER+ 095” Dual Color Pre-Cut Trimmer Line for 15"View on Amazon - 7
EGO Power+ POWERLOAD String Trimmer Head for Telescopic ShaftView on Amazon - 8
BLACK+DECKER 3-in-1 String Trimmer/Edger & Lawn MowerView on Amazon - 9
Oregon Magnum Gatorline 095 Trimmer Line Heavy DutyView on Amazon
Verdict: Choose a 56v string trimmer if you want the wider 16-inch cutting swath and up to 45 minutes of runtime from the EGO example. Choose a 40v string trimmer if you want a lighter tool, with the WORX example at 6.4 pounds, or a trimmer plus sweeper combo from the BLACK+DECKER example.
An overgrown edge along a fence, grass creeping over a walk, and weeds around trees all call for a trimmer that starts fast, reaches the growth and keeps going until the job is done. The 56v vs 40v string trimmer question comes down to voltage, swath, weight and what comes in the box. This comparison covers the differences, then three examples from the listings reviewed.
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EGO Power+ 56V 16-Inch String Trimmer with POWERLOAD
A 56V cordless string trimmer with a 16-inch cutting swath, POWERLOAD line winding, a telescopic carbon fiber shaft and up to 45 minutes of runtime.
Read the full review
The EGO example is the 56v side of this comparison: a 16-inch trimmer with a high-efficiency brushless motor, dual line spiral-twist 0.095-inch trimmer line and POWERLOAD technology that winds line at the push of a button. The kit includes a 56V 2.5Ah battery and a 210W charger, with up to 45 minutes of runtime on a single charge, and the telescopic carbon fiber shaft adjusts to the keeper's height. IPX4-rated weather-resistant construction rounds out the listing.
Pros
- 16-inch cutting swath for open edges
- Up to 45 minutes of runtime on one charge
- POWERLOAD push-button line winding
- Telescopic carbon fiber shaft with quick-adjust handle
Cons
- 16-inch swath is wider than tight spots need
- No second battery stated in the kit
- Carbon fiber shaft warranty is limited lifetime, not full lifetime
- Only one cutting swath size stated
BLACK+DECKER 40V MAX Cordless Sweeper and String Trimmer
A 40V MAX cordless sweeper and string trimmer combo with POWER DRIVE transmission, an automatic feed spool and a 2-year limited warranty.
Read the full review
The BLACK+DECKER example is the combo pick of the 40v side: a 40V MAX string trimmer with POWER DRIVE high-torque transmission and an automatic feed spool, paired with a sweeper that reaches a wind speed of up to 130 MPH. The listing describes a low noise design, a state-of-charge indicator and a battery and charger in the box, and the tool lists 11.0 pounds. A 2-year limited warranty is stated.
Pros
- Trimmer plus sweeper in one battery kit
- Sweeper wind speed of up to 130 MPH
- Automatic feed spool feeds line as needed
- State-of-charge indicator shows battery level
Cons
- No cutting swath stated on the listing
- No runtime stated on the listing
- Only one battery stated in the kit
- Heavier than the WORX example at 11.0 pounds
WORX 40V 13-Inch Cordless String Trimmer
A 40V cordless string trimmer with a 13-inch cut, an automatic-feed spool, a dual-exit cutting head and two 2.0Ah batteries.
Read the full review
The WORX example is the light 40v pick: a 13-inch cordless trimmer with an automatic-feed spool system, a dual-exit cutting head and an adjustable auxiliary handle. The kit includes two 2.0Ah batteries and a dual charger, and the PowerShare battery works with all WORX 20V and 40V tools, outdoor power and lifestyle products. The listing gives 6.4 pounds for the tool.
Pros
- Lightweight at 6.4 pounds for easy handling
- Two 2.0Ah batteries and a dual charger included
- Automatic-feed spool with dual-exit cutting head
- PowerShare battery fits WORX 20V and 40V tools
Cons
- No runtime stated on the listing
- No warranty term stated on the listing
- 13-inch cut covers less ground per pass than 16 inches
- No sweeper or second tool in the kit
Other machines to compare
EGO STA1600 16-Inch Carbon Fiber String Trimmer AttachmentCheck price on Amazon
EGO POWER+ Rapid Reload Trimmer HeadCheck price on Amazon
EGO POWER+ 095” Dual Color Pre-Cut Trimmer Line for 15"Check price on Amazon
EGO Power+ POWERLOAD String Trimmer Head for Telescopic ShaftCheck price on Amazon
BLACK+DECKER 3-in-1 String Trimmer/Edger & Lawn MowerCheck price on Amazon
Oregon Magnum Gatorline 095 Trimmer Line Heavy DutyCheck price on Amazon
56v vs 40v string trimmer side by side
| Factor | EGO ST1611T | BLACK+DECKER LCC340C | WORX WG183 |
|---|---|---|---|
| Voltage | 56V | 40V MAX | 40V |
| Cutting swath | 16-inch | Not stated | 13-inch |
| Battery | 56V 2.5Ah, charger included | Battery and charger included | Two 2.0Ah batteries, dual charger |
| Runtime stated | Up to 45 minutes | Not stated | Not stated |
| Line feed | POWERLOAD push-button wind | Automatic feed spool | Automatic-feed spool, dual-exit head |
| Weight | 17.24896737888 pounds | 11.0 pounds | 6.4 pounds |
| Extra tool | None stated | Sweeper up to 130 MPH | None stated |
| Warranty | 5-year limited tool warranty | 2-year limited warranty | Not stated |
Figures are manufacturer stated for the three example models, collected 30 October 2026.
Voltage and runtime
Voltage is the headline difference, but only the 56v example states a runtime. The EGO example runs on a 56V 2.5Ah battery with up to 45 minutes of runtime on a single charge, plus a 210W charger in the kit. The two 40v examples state no runtime, so the listings leave that comparison unclear rather than handing either side a win. What the 40v side does state is batteries: the WORX example includes two 2.0Ah batteries and a dual charger, while the BLACK+DECKER example includes a battery and charger.
Voltage also shapes the battery system. The WORX example uses PowerShare, which the listing says is compatible with all WORX 20V and 40V tools, outdoor power and lifestyle products. That matters on a property where one battery already serves other tools, since a shared battery spreads the cost across the shed.
Cutting swath and line
Swath decides how much ground each pass covers. The EGO example cuts a 16-inch swath with dual line spiral-twist 0.095-inch trimmer line, while the WORX example cuts 13 inches. The BLACK+DECKER example states no cutting swath, so the swath comparison rests on the two examples that state one. A wider swath clears open edges faster, while a narrower swath suits tight spots around trees, beds and fences.
Line feed differs too. The EGO example uses POWERLOAD technology, where the keeper feeds the line and pushes a button to wind it. The WORX example uses an automatic-feed spool system with a dual-exit cutting head, and the BLACK+DECKER example uses an automatic feed spool that feeds line as needed. All three aim at the same annoyance, stopping to wind line by hand, but they get there three different ways.
Weight and handling
Weight is where the 40v side makes its case. The WORX example lists 6.4 pounds and describes an ultra-lightweight streamlined design with an adjustable auxiliary handle. The BLACK+DECKER example lists 11.0 pounds. The EGO example does not lean on weight; instead it lists a telescopic carbon fiber shaft with a quick-adjust auxiliary handle that fits to the keeper’s height, plus a high-efficiency brushless motor that the listing says delivers long runtimes and low vibration.
The BLACK+DECKER example adds a second tool to the comparison: a sweeper with a wind speed of up to 130 MPH for clearing debris from hard surfaces, plus a low noise design and a state-of-charge indicator that shows battery level. For a property with walks and drives to clear after trimming, that combo covers two jobs with one battery.
The three examples
Acreage and terrain fit
EGO ST1611T
BLACK+DECKER LCC340C
WORX WG183
Matching It to Your Property
- Open edges and large lawns suit the 16-inch swath of the EGO example, which covers more ground per pass.
- Tight spots around trees and beds suit the 13-inch cut of the WORX example.
- Walks and drives suit the BLACK+DECKER example, whose sweeper clears debris at up to 130 MPH.
- Long sessions suit the telescopic shaft of the EGO example, which adjusts to the keeper’s height.
- Carrying between jobs suits the 6.4-pound WORX example, the lightest weight stated here.
The Acre Score explained
The Acre Score weighs five factors: performance (voltage, swath, runtime and line feed), build quality (shaft, motor and handle), value (batteries, charger and extra tools in the box), safety (ratings or controls the listing states) and warranty (years and coverage). A factor the listing does not state scores zero, which is why the WORX example scores zero for safety and warranty.
| Product | Acre Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| EGO ST1611T | 9.6 | 30 | 21 | 20 | 5 | 3 |
| BLACK+DECKER LCC340C | 9.3 | 24 | 18 | 19 | 0 | 2 |
| WORX WG183 | 9.3 | 26 | 19 | 20 | 0 | 0 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.
For more on matching a trimmer to the yard, see our trimmers and blowers guides.
Wear eye and hearing protection, long pants and sturdy footwear, and keep bystanders well back while the line or blade spins. Clear stones and debris first, and stop the engine or remove the battery before clearing the head. Refuel only with the engine off and cool. See OSHA landscaping safety. Read our Safety Disclaimer.
FAQ: mowing large lots
Does higher voltage mean longer runtime?
Not on these listings alone. The EGO 56v example states up to 45 minutes of runtime, while neither 40v example states a runtime, so the listings leave that comparison unclear. Compare battery amp hours and stated runtime, not voltage alone.
Which trimmer is lightest?
The WORX example lists 6.4 pounds, the lightest of the three stated weights. The BLACK+DECKER example lists 11.0 pounds, and the EGO example lists 17.24896737888 pounds.
Do these trimmers include batteries?
Yes, all three include at least one battery and a charger. The EGO example includes a 56V 2.5Ah battery and a 210W charger, the WORX example includes two 2.0Ah batteries and a dual charger, and the BLACK+DECKER example includes a battery and charger.
What does the sweeper add?
The BLACK+DECKER example pairs its trimmer with a sweeper that reaches a wind speed of up to 130 MPH for clearing debris from hard surfaces. That covers walks and drives with the same battery after trimming.
Can one battery serve other tools?
For the WORX example, yes: its PowerShare battery is compatible with all WORX 20V and 40V tools, outdoor power and lifestyle products, per the listing. The other listings state no cross-tool battery sharing.
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