Worx 40V Cordless Lawn Dethatcher, 2 in 1 Dethatcher & Scarifier with Brushless Motor, Electric Dethatcher Removes Deep Thatch & Improves Grass Health, 2 × 4.0 Ah Batteries & Charger Included, WG855

What It Is

The Worx WG855 is a cordless, 2-in-1 dethatcher and scarifier powered by a brushless motor, designed to remove thatch and moss from lawns to improve grass health. It includes two 4.0 Ah batteries and a charger, making it a standalone tool for lawn renovation—not a mower attachment.

Fitment & Compatibility

This is a complete tool, not a replacement part or accessory for an existing mower. No deck size or brand fitment applies. Before buying, verify your lawn size: the 4.0 Ah batteries provide roughly 20–30 minutes of runtime per charge, covering up to 1/4 acre total with both batteries. The unit works on any turf type (e.g., fescue, Bermuda, zoysia) but requires a clean, dry lawn free of large debris. The 12-inch working width suits small to medium lawns; larger areas may need extra batteries (sold separately, model WA3530 or higher). The tool uses a 40V Power Share platform, so batteries and chargers are cross-compatible with other Worx 40V tools.

Key Things to Know

• Quality & Build: Brushless motor is durable and efficient, but the plastic housing is less robust than steel-frame units; avoid hitting rocks or roots to prevent damage.
• Installation Difficulty: None—tool arrives assembled. Adjusting depth (5 settings) takes seconds via a knob; start at shallowest setting to avoid scalping.
• Common Gotchas: The dethatcher tines are aggressive; use scarifier mode for light thatch and dethatcher for heavy buildup. Wet grass clogs the collection bag—always dethatch dry. Batteries drain quickly on thick grass; keep the second battery charged and ready.
• Noise & Vibration: Relatively quiet (84 dB) but vibrations can fatigue hands; wear gloves and take breaks.

Should You Buy It

Buy this if you have a small to medium lawn (up to 1/4 acre) with moderate thatch buildup and already own Worx 40V tools for shared batteries. It’s a solid cordless option for homeowners who want convenience over gas power, but if your lawn is larger or heavily compacted, consider a gas or corded model with higher throughput.