HEINPRO Cordless String Trimmer — Compatible with Milwaukee M18, 3-in-1 Lightweight 12in Cutting & 8500 RPM

HEINPRO Cordless String Trimmer is a lightweight, 3-in-1 battery-powered yard tool compatible with Milwaukee M18 batteries (battery and charger sold separately).

This compact cordless weed wacker combines a precision string trimmer, an in-line wheeled edger and a mini mower head in one tool, letting you switch quickly between tasks without hauling multiple devices. The unit features an upgraded copper-wound motor for higher no-load speeds up to 8500 RPM, an improved patented spool that keeps line secure, and an ergonomic design with adjustable handle and tilted cutting head for comfortable trimming in awkward spots.

How does this trimmer save me time on lawn edge and path work?

The 3-in-1 configuration lets you go from trimming to edging and light mowing without changing machines. Swapping heads is simple, so you can trim along fences, switch to the wheel for straight edges, then use the mini mower mode for small patches.

• 12-inch cutting diameter cuts a clear swath in one pass.
• In-line wheeled edger keeps straight edges along sidewalks and driveways.
• Mini mower mode handles small grassy patches near beds and patios.
• Quick head changes reduce downtime and gear storage.

What do I need to power this HEINPRO trimmer and how compatible is it?

This listing is for the tool only; a Milwaukee M18 18V lithium-ion battery and charger are required but not included. The tool is engineered to accept Milwaukee M18 battery packs, letting you use batteries you might already own from that system for fast swaps and shared charging.

• Compatible with Milwaukee M18 18V batteries (battery and charger not included).
• Tool-only option reduces cost for users who already have M18 batteries.
• Lightweight 3.7 lb design helps extend runtime by reducing user fatigue.
• Compact length 2.7–3.6 ft fits tight spaces and storage areas.

How easy is it to handle, maintain and feed line?

The HEINPRO trimmer is built for straightforward use: a 180° adjustable auxiliary handle and a cutting head that tilts from 0–90° let you set the best posture and reach. The spool system supports both automatic and manual feed, so you get consistent line feed with minimal fuss.

• 180° rotating handle accommodates left- and right-handed users.
• Dual-line advance: automatic 0.4-inch feed on start, manual bump feed when needed.
• Patented spool design reduces loose or messy line during installation.
• Line specs: six replacement lines of 16.5 ft each, 0.065 in diameter per line.

Will this trimmer give me enough power for common yard tasks?

The upgraded copper-wound motor delivers a no-load speed up to 8500 RPM, offering stronger cutting performance and lower noise compared with basic consumer trimmers. While intended for homeowner and light professional use, it's optimized for grass, weeds and edge work rather than heavy brush removal.

• High-efficiency copper motor for consistent RPM and quieter operation.
• 12-inch cutting diameter balances precision and coverage.
• Lightweight construction for longer use without strain.
• Not designed for thick saplings or heavy brush clearing.

Who is this for? This HEINPRO cordless string trimmer is for homeowners, landscapers and hobby gardeners who want a versatile, lightweight tool that pairs with Milwaukee M18 batteries. It's a practical choice if you need one compact device to trim borders, create clean edges and handle small mowing spots, and especially valuable if you already own M18 batteries and chargers. Note: this sale is for the tool only — purchase compatible M18 batteries and charger separately.