Home & Kitchen · Head-to-head
EGO POWER+ 15" String Trimmer with POWERLOAD (ST1521S) vs RYOBI 40V 15" Attachment Capable String Trimmer Kit (RY40ST01K)
Which should you buy? Here's the honest call, pulled from our full The Best Cordless String Trimmers: 4 Compared (and One to Skip) comparison.
The EGO wins for its combination of gas-like 56V power and a genuinely fuss-free automatic line feed that owners love. The RYOBI is the smarter buy for anyone who wants one affordable battery platform to power a whole shed of yard tools.
EGO POWER+ 15" String Trimmer with POWERLOAD (ST1521S)
Buy itGas-like 56V power with a push-button line feed that ends spool-winding misery.
- POWERLOAD head auto-winds the line at the push of a button - no hand-spooling
- 56V brushless motor delivers the torque reviewers say chews through thick, wet weeds
- Feeds a large 56V ecosystem of mowers, blowers, and saws that share the battery
- Front-motor build is sturdy but nose-heavy compared with lighter 20V trimmers
- POWERLOAD only feeds cleanly when the line is pre-cut to the specified length
RYOBI 40V 15" Attachment Capable String Trimmer Kit (RY40ST01K)
Buy itThe value pick: one attachment-capable powerhead that grows into a whole yard toolkit.
- Attachment-capable shaft accepts edger, pole saw, and cultivator heads from one motor
- Backed by RYOBI's huge, affordable 40V lineup that owners praise for value
- Ships with a generous 4Ah battery, so runtime is long for the price class
- Noticeably heavy once the 4Ah pack is fitted
- Uses a bump-feed head rather than EGO's automatic line loading
Side by side
| EGO POWER+ 15" String Trimmer with POWERLOAD (ST1521S) | RYOBI 40V 15" Attachment Capable String Trimmer Kit (RY40ST01K) | |
|---|---|---|
| Our verdict | Buy | Buy |
| Best for | Homeowners with quarter- to half-acre lots who want gas-grade power without the fuss. | Budget-minded homeowners who want one battery platform for many yard tools. |
| Price tier | $$$ · premium | $$ · mid-range |
The bottom line
Our overall pick is the EGO POWER+ 15" String Trimmer with POWERLOAD (ST1521S) - Gas-like 56V power with a push-button line feed that ends spool-winding misery. Choose the RYOBI 40V 15" Attachment Capable String Trimmer Kit (RY40ST01K) instead if budget-minded homeowners who want one battery platform for many yard tools.
Want the full picture, including the other options we compared and the popular one we'd skip? Read the complete The Best Cordless String Trimmers: 4 Compared (and One to Skip).