For homeowners already running DeWalt, Milwaukee, or Makita batteries, Heinpro makes one of the strongest cases — a 12-inch cordless string trimmer built tool-only so you're not paying for a battery system you already own.
What separates the Heinpro 12-inch string trimmer from generic cordless options is a copper wire motor rated at 8,500 RPM no-load — a meaningful step above basic brushed motors that run hotter and wear faster over multiple seasons. The dual-action line feed system (auto on startup, manual bump on demand) gives more practical control than pure auto-feed designs, which can advance line wastefully mid-job. At 4.2 lbs tool-only, fatigue across a typical suburban lot stays manageable.
- Heinpro 12-inch string trimmer motor speed: 8,500 RPM no-load copper wire brushed motor.
- Heinpro string trimmer weight: 4.2 lbs tool-only, no battery or charger included.
- Battery compatibility: fits DeWalt 20V MAX DCB200–DCB240, Milwaukee M18, or Makita 18V batteries.
- Heinpro 12-inch string trimmer rating: 4.6 stars across 191 reviews — highest-rated tool in the Heinpro lineup.
- Line feed system: dual-action — automatic on startup, manual bump feed available on demand.