Wenwu Cordless 3-in-1 String Trimmer — 2×21V 4.0Ah Batteries, Telescoping Shaft & 90° Adjustable Head

The Wenwu Cordless Weed Wacker is a lightweight 3-in-1 string trimmer and edger powered by two 21V 4.0Ah lithium batteries for extended, cordless lawn and garden trimming.

Designed for homeowners who want one versatile tool for grass trimming, border edging and tackling weeds, this Wenwu yard tool combines a telescoping shaft, a 90° adjustable head and removable guide wheels to make outdoor chores quicker and less tiring. The cordless design and included spare battery let you move freely across the yard without running power cords, while the folding shaft keeps storage compact between jobs.

How does the Wenwu trimmer handle different lawn tasks?

Switching between trimming, edging and close-quarters weed cutting is done without reaching for a second tool. The 3-in-1 setup plus a head that tilts up to 90° covers flat lawn trimming, vertical edging and trimming under obstacles.

• String trimmer mode for general grass and weed cutting
• Edge mode with angled head for clean lawn borders
• Compact positioning for under-deck or fence trimming

How long will the batteries last and how easy are they to swap?

This model includes two 21V 4.0Ah lithium-ion batteries so you can use one while the other charges, extending run time for larger yards. Batteries are removable and straightforward to change, so you can continue working with minimal downtime.

• Two included 21V 4.0Ah batteries for longer continuous use
• Simple slide-in battery bays for fast swaps
• Carry a spare battery to double typical single-battery runtime

What ergonomic and storage features reduce fatigue and clutter?

The Wenwu unit is built to be light and adaptable: an adjustable telescopic shaft sets the correct reach, auxiliary wheels help guide without heavy lifting, and the folding shaft lets you store the tool in small spaces. Those features cut strain and free up garage room.

• Telescoping shaft adjusts from 39 to 51 inches for comfortable posture
• Removable guide wheels take strain out of long edging jobs
• Folding shaft for compact storage in sheds or closets

How precise is the cutting and edge control?

The 90° adjustable head and stable wheel option give you predictable, straight edges and closer cuts near walkways and garden beds. The design helps maintain consistent line-of-cut without frequent repositioning.

• 90° head adjustment for clean vertical edging and flat trimming
• Auxiliary wheels for consistent height and smoother passes
• Lightweight body allows more controlled, accurate trimming

Who this tool is for: The Wenwu Cordless Weed Wacker fits homeowners, renters with yards, and small-property landscapers who want a single, portable machine for trimming grass, cleaning up borders and tidying around obstacles. It’s useful for anyone who values cordless convenience, quick battery swaps and compact storage without sacrificing the ability to edge precisely or trim hard-to-reach areas.