Head to head
Worx WG163 vs Black+Decker 40V
Budget trimmer-edger against mid-power 40V: which is the better second-tier pick?
#3 in our rankings · Best Budget
Worx Worx WG163
Best for: Small-yard owners who need a light trimmer that also edges sidewalks, and shoppers watching the price.
#4 in our rankings · Best Mid-Power
Black+Decker Black+Decker 40V LST140C
Best for: Homeowners who want more power than 20V tools without stepping up to a premium 56V system.
Our recommendation
Choose by yard size. The Worx WG163 wins for small yards with its edging head and lower price; the Black+Decker 40V wins for anything with real weeds, thanks to 40V torque and thicker line.
Power class
The Black+Decker runs a 40V platform with a PowerDrive transmission; the Worx runs 20V. In thick grass and weeds, the voltage gap shows: the Black+Decker maintains head speed where the Worx bogs down.
Edging
The Worx's 90-degree pivoting head is the best edging design in this guide. The Black+Decker edges by rotating the shaft, which works but demands more skill for a straight line.
Swath and line
Black+Decker: 13-inch swath, 0.080-inch line. Worx: 12-inch swath, 0.065-inch line. The Black+Decker covers more ground per pass and its line survives weeds longer.
Choose Worx Worx WG163 if…
- Your yard is small and mostly maintained lawn
- Sidewalk and driveway edging is a priority
- Budget is the deciding factor
Choose Black+Decker Black+Decker 40V LST140C if…
- You cut weeds, not just grass
- Your yard is a quarter acre or larger
- You want more torque without EGO prices
Spec-by-spec comparison
| Spec | Worx Worx WG163 | Black+Decker Black+Decker 40V LST140C |
|---|---|---|
| Price tier | Budget | Mid-range |
| Voltage platform | 20V Power Share | 40V Max |
| Cutting swath | 12 inches | 13 inches |
| Line diameter | 0.065 inch dual line | 0.080 inch |
| Line feed | Command Feed push-button | Automatic feed spool |
| Edging | 90-degree pivoting head | — |
| Drive | — | PowerDrive transmission |
| Best for | Small-yard owners who need a light trimmer that also edges sidewalks, and shoppers watching the price. | Homeowners who want more power than 20V tools without stepping up to a premium 56V system. |
| Skip if | You cut thick weeds or tall grass regularly, or your yard is larger than about a quarter acre. | You need the widest swath available, or you want an automatic line-feed head. |
Strengths and limitations
Worx Worx WG163
Strengths
- Pivoting head converts from trimmer to edger in seconds
- Lightweight design is easy to carry and store
- 0.065-inch dual line with Command Feed spool system
- Lowest price of the proven models in this guide
Limitations
- 12-inch swath means more passes on wide areas
- 0.065-inch line is thin for heavy weeds
- Not built for thick brush or commercial-duty work
Black+Decker Black+Decker 40V LST140C
Strengths
- 40V Max platform delivers more torque than 20V-class trimmers
- PowerDrive transmission transfers more power from motor to cutting string
- 13-inch cutting swath covers residential yards efficiently
- Power Command dial lets you control cut speed to extend runtime
Limitations
- Automatic feed spool advances line whenever it shortens, which can use line quickly
- Heavier than 20V models
- 40V battery platform is smaller than DeWalt's 20V ecosystem
How they fit the wider field
- Worx Worx WG163: ranked #3 (Best Budget) in The 4 Best String Trimmers of 2026. Read the full Worx Worx WG163 review.
- Black+Decker Black+Decker 40V LST140C: ranked #4 (Best Mid-Power) in The 4 Best String Trimmers of 2026.
Neither one quite right? The full rankings cover 10 picks matched to different buyers.
Questions, answered
Can the Worx handle weeds?
Light weeds, yes. Thick or woody weeds snap its 0.065-inch line quickly; the Black+Decker's 0.080-inch line and 40V motor handle them better.
Which is lighter?
The Worx, by a clear margin. The 20V platform and smaller head make it easier to carry for users who prioritize light weight.