Cordless Weed Wacker, Electric Grass Trimmer 21V 2.0Ah Battery Powered Weed Trimmer, 3 in 1 Stringless Lightweight Brush Cutter/Edger/Mower with 4 Types Blade & Wheels for Garden and Yard Lawn

What It Is

This is a 21V cordless weed wacker/grass trimmer with a 2.0Ah battery, designed for small to medium lawns, edging, and light brush cutting. It replaces the need for string by using four interchangeable blades (including a mower blade) and includes wheels for ground contact use.

Fitment & Compatibility

• Battery & Charger: Uses a proprietary 21V 2.0Ah battery (included). No compatibility with other brands (e.g., Ryobi, DeWalt). Replacement batteries are only sold by this brand.
• Blade System: Four plastic blades included—not universal. You must buy the same brand’s blades for replacements, as the mounting hole pattern is non-standard.
• Deck/Head Size: Cutting width is approximately 8 inches. Not compatible with standard string trimmer heads or spools.
• Wheels: Attach to the trimmer head for mower/dethatcher mode. Only fit this model.
• Voltage Check: 21V only. Do not use with 18V or 40V batteries.

Key Things to Know

• Battery Life: 2.0Ah battery provides ~20–30 minutes runtime on light grass. Heavy or wet grass drains it in under 15 minutes. Expect to buy a second battery for larger yards.
• Blade Durability: Plastic blades dull quickly on thick weeds or against fences/walls. Replacement 10-packs are cheap but wear out faster than standard nylon string.
• Assembly Required: Wheels and blade guard must be installed. Tools included, but instructions are basic—watch a video for correct blade orientation.
• Stringless Trade-off: No string to feed, but blades can snap on rocks or hard surfaces. Keep a spare set handy.

Should You Buy It

Buy this if you have a small yard (under ¼ acre), want a lightweight trimmer with no string to replace, and don’t mind buying proprietary blades. Avoid if you need long runtime, handle thick brush, or prefer standard string trimmer compatibility. The low price reflects the short battery life and plastic blade fragility.