40V Cordless Brushless 15IN 2-in-1 Dethatcher & Scarifier Compatible with Dewalt 20v Battery (Tool Only), 12 Gal Bag, Air Boost Technology, Quick Fold & 5 Adjustable Depths, Walk-Behind for Lawn Care

What It Is

This is a 40V cordless walk-behind dethatcher and scarifier (tool only, no battery) that uses a 15-inch working width, a 12-gallon collection bag, and Air Boost Technology to lift debris. It’s designed for lawn aeration and thatch removal on residential turf.

Fitment & Compatibility

• Power source: Requires a DEWALT 20V MAX battery (not included). It is not compatible with 40V or 60V batteries—only the standard 20V slide-pack. The mower runs on two 20V batteries in series to achieve 40V output.
• Deck size: 15-inch cutting width; fits standard residential lawns but may struggle in tight corners or small strips. Check your lawn’s width of gate openings and storage space (unit folds for storage).
• OEM vs aftermarket: This is a DEWALT-branded tool, so it’s designed to work with genuine DEWALT 20V batteries and chargers. Aftermarket batteries may work but can affect performance or warranty.
• Measurements: Overall length ~60 inches, width ~18 inches, weight ~30 lbs (without battery). Ensure you have clearance for the handle when folded.

Key Things to Know

• Installation difficulty: Low—no tools required for assembly (handle locks into place, bag clips on). The depth adjustment lever is easy to reach and offers 5 positions (0 to -0.5 inches).
• Air Boost Technology: Works well for lifting matted thatch, but the 12-gallon bag fills quickly on thick lawns. You may need to empty it frequently.
• Battery life: On a single 5Ah 20V battery, expect ~20–30 minutes of runtime. Using two 5Ah batteries (one in each slot) extends runtime to ~40–60 minutes depending on depth and grass density.
• Common gotcha: The scarifier tines are plastic and can wear faster on rocky or compacted soil. Check the ground for debris before use to avoid breakage.

Should You Buy It

Buy this if you already own DEWALT 20V batteries and need a lightweight, cordless dethatcher for small to medium lawns (under 1/4 acre). It’s a solid choice for quick seasonal thatch removal without gas or extension cords. Skip it if you have a large lawn or heavy thatch—the bag fills fast and battery life may require multiple swaps.