EGO Power+ 15" POWERLOAD String Trimmer (ST1521S) Review (2026)
By The DIYPicks Team · Updated July 2026
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- Small yards
- Medium yards
- Battery
- Edging
- Low maintenance
A near-maintenance-free battery trimmer whose self-winding head and shared 56V platform make it the easy pick for typical suburban yards and clean edging.
Pros
- POWERLOAD head reloads line automatically, skipping the usual messy hand-winding
- Carbon-fiber straight shaft plus brushless motor is quiet, low-vibration, and starts instantly
- Shares one 56V battery platform with EGO blowers, mowers, and edger attachments
Cons
- 2.5Ah runtime (~45 min) can fall short on large lots without a spare pack
- Kit price runs higher than a comparable gas trimmer up front
- Bump/auto head still relies on pre-cut .095 in line, not thicker gas-grade line for heavy brush
Specifications
| Power | 56V ARC Lithium battery |
|---|---|
| Swath | 15 in |
| Line feed | POWERLOAD auto-wind (bump-style .095 in) |
| Runtime | ~45 min (2.5Ah) |
| Weight | ~9.9 lb |
| Best for | Small to medium yards & edging |