WORX WG163 vs BLACK+DECKER BESTA510: Cordless vs Corded String Trimmer Showdown (2026)

Price — BLACK+DECKER wins by a wide margin

The BESTA510 costs just $49, less than half the WORX's $109.99. For budget buyers trimming a small yard, that $60 saved can go toward other tools. The WORX's higher price buys cordless convenience and an edging feature. If you rarely trim and want the lowest entry cost, the BLACK+DECKER is the clear choice.

Cutting Width — BLACK+DECKER edges ahead, but it's close

The BESTA510 cuts 13 inches wide, 1 inch more than the WORX's 12-inch swath. That inch saves time on larger lawns, but both cover standard residential grass just fine. In practice, the difference is minor — maybe one extra pass per row with the WORX.

Power Source — WORX frees you from the cord

The WORX runs on a 20V battery system with two included packs. You can trim anywhere in your yard without dragging an extension cord. The BLACK+DECKER plugs into an outlet — fine for small, tidy lawns but a hassle if you need to reach the far side of a half-acre. If you hate managing cords, the WORX is worth the premium.

Weight — Both are lightweight, WORX feels better balanced

The WORX weighs 5.52 lbs with battery; the BLACK+DECKER is about 5 lbs (weight unconfirmed). Neither will tire you quickly, but the WORX's battery placement near the handle improves balance during extended trimming sessions. The BLACK+DECKER's cord adds some drag but the tool itself is light.

Runtime — BLACK+DECKER never runs out; WORX has two batteries

The WORX includes two 20V batteries for up to 60 total minutes of runtime. The BLACK+DECKER runs as long as it's plugged in — no battery anxiety. For a medium yard (up to 1/4 acre), the WORX's two batteries will likely finish the job. For larger or thicker grass, the corded model delivers consistent power without interruption.

Auto Line Feed — BLACK+DECKER's automatic spool is more convenient

The BESTA510 feeds trimmer line automatically — no bumping required. The WORX uses a traditional bump-feed head: tap the trimmer on the ground to advance line. Both work, but automatic feed is one less annoyance during a chore you probably don't love.

Edger Function — WORX pulls double duty

The WORX converts from trimmer to wheeled edger in seconds. Flip the head and attach the wheel — it's legitimately useful for clean sidewalk and driveway borders. The BLACK+DECKER has no edging function. If you maintain walkways, the WORX saves you from buying a separate edger.

Best For — It's a tie, depending on your priorities

Choose the WORX if you value cordless mobility, edging capability, and don't mind paying $109. Choose the BLACK+DECKER if you have a small yard, don't need edging, and want the lowest possible price. There's no wrong answer — it's a matter of yard size and budget.