The Heinpro 12-inch cordless string trimmer is the best cordless strimmer for most homeowners who already own a DeWalt, Milwaukee, or Makita battery — its dual-action line feed and copper wire motor at 8,500 RPM no-load give it a meaningful edge over basic brushed alternatives.
The Heinpro 12-inch string trimmer earns its 4.6-star rating across 191 reviews because it solves two real problems: line feed that doesn't require constant fussing, and a motor built to last past the first season. At 4.2 lbs tool-only, the trimmer handles a typical suburban lot without arm fatigue. The dual-action system auto-advances line on startup and allows manual bump on demand — more practical control than pure auto-feed, which can waste line.
- Heinpro 12-inch string trimmer weighs 4.2 lbs tool-only — no battery or charger included.
- Copper wire motor runs at 8,500 RPM no-load — higher baseline than standard brushed motors on comparable 20V trimmers.
- Compatible with DeWalt 20V MAX batteries DCB200 through DCB240, Milwaukee M18, and Makita 18V.
- Rated 4.6 stars across 191 reviews — highest-rated tool in the Heinpro lineup.
- Dual-action line feed: auto-advance on startup, manual bump feed available on demand.