EGO Power+ ST1521S vs Worx WG183 40V: Which Cordless Trimmer Should You Buy?
Last updated: 2026-09-18 · By NicheHive Editorial
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The EGO Power+ ST1521S (56V, 15-inch, carbon fiber shaft) and the Worx WG183 (40V, 13-inch, two batteries included) sit at opposite ends of the cordless trimmer price and power spectrum. This comparison covers cutting power, weight, battery systems, and who should buy each. Note: we were unable to verify a current Ryobi 40V listing with confirmed imagery at review time, so this comparison uses the Worx WG183 as the 40V-class representative.
EGO Power+ ST1521S 15-Inch String Trimmer
- ✓15-inch cutting swath with POWERLOAD auto-feed
- ✓56V ARC Lithium battery, 2.5Ah included
- ✓Carbon fiber split shaft
- ✓Brushless motor
- ✓Pivoting head for edging
Pros
- 56V brushless motor delivers noticeably more cutting torque through dense growth
- POWERLOAD auto-feed removes the most tedious part of trimmer maintenance
- Carbon fiber shaft is lighter and stiffer than the Worx's shaft material
- Compatible with EGO's broader 56V outdoor tool lineup
Cons
- $70 to $100 more expensive than the Worx WG183 at typical pricing
- 56V battery platform doesn't cross over to 40V tools from other brands
- Ships with one battery versus the Worx's two
Best for buyers who want the strongest cordless cutting performance and are building an EGO tool ecosystem.
Worx WG183 40V String Trimmer
- ✓13-inch dual-exit cutting head
- ✓40V PowerShare, 2 x 2.0Ah batteries included
- ✓Auto-feed line advance
- ✓Pivoting head
- ✓Under 5 pounds
Pros
- $70 to $100 less expensive than the EGO ST1521S
- Two batteries included versus the EGO's single battery
- Lighter overall weight, under 5 pounds
- PowerShare batteries cross over to Worx's mower and blower lineup
Cons
- Less motor torque, noticeably slower through dense or woody growth
- 13-inch swath is narrower than the EGO's 15-inch
- Plastic shaft flexes more under load than the EGO's carbon fiber
Best for buyers on a tighter budget with a small to medium yard who value having two batteries included.
Cordless string trimmers span a wide price and power range, and the EGO Power+ ST1521S and Worx WG183 sit near opposite ends of it.
A note on this comparison: we set out to compare the EGO against a Ryobi 40V trimmer, one of the most common matchups shoppers search for, but couldn't verify a current Ryobi 40V listing with confirmed product imagery at review time. We're using the Worx WG183 here instead, a trimmer in the same 40V class with a similar feature set, so the comparison still reflects a realistic premium-versus-budget decision.
The EGO brings a 56V brushless motor, a carbon fiber shaft, and POWERLOAD auto-feed line, at a price of $170 to $200. The Worx counters with two included 40V batteries, a lighter build under 5 pounds, and a price typically under $100.
On cutting power, the EGO's 56V motor is the clear winner, holding line speed through growth that visibly slows the Worx. On weight and price, the Worx has the advantage.
The decision mostly comes down to yard size and growth density. A larger yard or regular thick weeds favor the EGO, while a small to medium yard with typical grass favors the Worx's lower price and lighter build.
The Short Answer
Buy the EGO Power+ ST1521S if you have a larger yard, deal with thick weeds or overgrowth regularly, or plan to build out an EGO 56V tool collection over time.
Buy the Worx WG183 if you have a small to medium yard, want to save $70 to $100, or prefer a lighter trimmer with two included batteries.
Spec Comparison
| Spec | EGO Power+ ST1521S | Worx WG183 |
|---|---|---|
| Battery voltage | 56V | 40V |
| Cutting swath | 15-inch | 13-inch |
| Batteries included | 1 x 2.5Ah | 2 x 2.0Ah |
| Shaft material | Carbon fiber | Plastic composite |
| Weight | About 8 lbs | Under 5 lbs |
| Line feed | POWERLOAD auto-feed | Auto-feed |
| Typical price | $170 to $200 | Under $100 |
Where They Match
Pivoting head: both trimmers pivot to a vertical position for edging, a feature not universal at either price point.
Auto-feed line: neither requires manually unwinding a spool to reload line, though EGO's POWERLOAD system is generally considered the more convenient of the two.
Build reliability: both brands have a solid reputation for cordless outdoor power equipment, with ratings volume in the thousands and generally positive long-term ownership reports.
Where EGO Wins
Cutting power: the 56V brushless motor holds RPM through dense growth noticeably better than the Worx's 40V motor, a real difference on anything beyond light, well-maintained grass.
Swath width: 15 inches versus 13 inches means fewer passes across a larger lawn.
Shaft rigidity: the carbon fiber shaft flexes less under load than the Worx's composite shaft, which translates to a more precise, controlled cut.
Where Worx Wins
Price: typically $70 to $100 less than the EGO at standard pricing.
Included batteries: two 2.0Ah packs versus the EGO's single 2.5Ah pack, useful for back-to-back yard tasks without a mid-job charge wait.
Weight: under 5 pounds versus roughly 8 pounds for the EGO, a real factor on longer sessions or when edging at an angle.
Who Should Buy Each
EGO Power+ ST1521S: larger yard, regular thick weeds, building an EGO tool collection, budget $170 to $200.
Worx WG183: small to medium yard, budget under $100, value two batteries and low weight over maximum cutting power.
See Also
Frequently Asked Questions
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