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Quick verdict
Choose the EGO Power+ ST1521S 15-Inch String Trimmer if you want pivoting head locks cleanly into edging position without extra tools. Choose the Greenworks 40V 12-Inch Cordless String Trimmer if you'd rather have battery and charger included at a price that competitors often charge for the bare tool alone. Overall we rank the EGO Power+ ST1521S 15-Inch String Trimmer higher: #1 versus #3 in our Best String Trimmers for Edging list.
Winner overall: EGO Power+ ST1521S 15-Inch String Trimmer
EGO Power+ ST1521S 15-Inch String Trimmer vs Greenworks 40V 12-Inch Cordless String Trimmer compared
Every difference that matters, in one table.
Keep researching
- Best String Trimmers for Edging
- EGO Power+ ST1521S 15-Inch String Trimmer review
- Greenworks 40V 12-Inch Cordless String Trimmer review
- All string trimmers
Bottom line
Choose the EGO Power+ ST1521S 15-Inch String Trimmer if you want pivoting head locks cleanly into edging position without extra tools. Choose the Greenworks 40V 12-Inch Cordless String Trimmer if you'd rather have battery and charger included at a price that competitors often charge for the bare tool alone. Overall we rank the EGO Power+ ST1521S 15-Inch String Trimmer higher: #1 versus #3 in our Best String Trimmers for Edging list.
EGO
Carbon fiber shaft keeps weight low without sacrificing reach on an incline
- 15-inch cutting swath
- Carbon fiber split shaft, adjustable length
- 56V ARC Lithium battery, 2.5Ah included
- Brushless motor
- Under 8 pounds
✓ Pros
- Battery and charger included at a price that competitors often charge for the bare tool alone
- 3-year warranty is longer than most trimmers at this price point
- Handles typical small to medium yard trimming without issue
✕ Cons
- 12-inch swath is on the narrower side
- 2.0Ah battery runtime is modest on larger lots
- Plastic shaft coupler feels less premium than pricier models
Greenworks
Light enough to handle on a moderate incline without excess fatigue
- 12-inch cutting swath
- 40V lithium battery, 2.0Ah included
- Dual line auto-feed
- Variable speed trigger
✓ Pros
- Light enough to handle on a moderate incline without excess fatigue
- Lowest price of the group for occasional slope maintenance
- Variable speed trigger helps conserve the smaller battery on shorter slope sessions
✕ Cons
- 2.0Ah battery has the shortest runtime, a real constraint on a long slope
- 12-inch swath is the narrowest here for covering hillside ground
- Less motor torque than the EGO for thick growth on an untended slope
FAQ
Common questions
Which is better, the EGO Power+ ST1521S 15-Inch String Trimmer or the Greenworks 40V 12-Inch Cordless String Trimmer?
Choose the EGO Power+ ST1521S 15-Inch String Trimmer if you want pivoting head locks cleanly into edging position without extra tools. Choose the Greenworks 40V 12-Inch Cordless String Trimmer if you'd rather have battery and charger included at a price that competitors often charge for the bare tool alone. Overall we rank the EGO Power+ ST1521S 15-Inch String Trimmer higher: #1 versus #3 in our Best String Trimmers for Edging list.
What is the difference between the EGO Power+ ST1521S 15-Inch String Trimmer and the Greenworks 40V 12-Inch Cordless String Trimmer?
The EGO Power+ ST1521S 15-Inch String Trimmer stands out because pivoting head locks cleanly into edging position without extra tools, while the Greenworks 40V 12-Inch Cordless String Trimmer stands out because battery and charger included at a price that competitors often charge for the bare tool alone. The trade-offs differ too: the EGO Power+ ST1521S 15-Inch String Trimmer's ma in caveat is that 56V battery and charger add cost versus 40V competitors, and the Greenworks 40V 12-Inch Cordless String Trimmer's is that 12-inch swath is on the narrower side.
Is the EGO Power+ ST1521S 15-Inch String Trimmer worth it over the Greenworks 40V 12-Inch Cordless String Trimmer?
For most buyers, yes: it's our #1 pick. Consider the Greenworks 40V 12-Inch Cordless String Trimmer instead if 56V battery and charger add cost versus 40V competitors is a deal-breaker for you.
Who should buy the Greenworks 40V 12-Inch Cordless String Trimmer instead of the EGO Power+ ST1521S 15-Inch String Trimmer?
The Greenworks 40V 12-Inch Cordless String Trimmer suits buyers whose priorities match its strengths, while the EGO Power+ ST1521S 15-Inch String Trimmer is best for edging.
Keep researching
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Greenworks 40V 12-Inch Cordless String Trimmer
