Powilling 2 Pack 6.5Ah Replacement for Worx 20V Battery and Charger Compatible with Worx Battery 20V WA3674 WA3575 WA3525 WA3520 WG151s WG155s WG545s

What It Is

This is a 2-pack of 6.5Ah aftermarket lithium-ion batteries for Worx 20V cordless lawn mowers, trimmers, and blowers, plus a dual-port charger. It’s designed to replace worn-out OEM Worx batteries and extend runtime.

Fitment & Compatibility

• Models confirmed: Works with Worx 20V batteries WA3674, WA3575, WA3525, WA3520, and tools WG151s, WG155s, WG545s. Also fits any Worx 20V tool that uses the standard “WA” slide-on battery platform (e.g., WG119, WG184, WG901).
• What to check: Measure your battery slot—OEM Worx 20V packs are roughly 4.5 x 3 x 2.5 inches. This aftermarket battery uses the same slide-lock design but may be slightly thicker (6.5Ah cells). Ensure clearance in your mower’s battery compartment.
• Deck size: No direct deck limit—fits any Worx 20V mower (e.g., WG779, WG780) but check that the battery doesn’t protrude or block the handle fold.
• Charger compatibility: The included charger works only with Worx 20V slide-on batteries. It is not compatible with Worx 40V or 80V systems.

Key Things to Know

• Capacity vs OEM: 6.5Ah is higher than standard Worx 2.0Ah or 4.0Ah packs—expect up to 2x longer run time on a mower (e.g., 45–60 min on a 20V trimmer vs 20–30 min with 2.0Ah).
• Installation: No tools needed—slide battery onto tool until it clicks. Charger plugs into any standard wall outlet; charge time is ~2–3 hours for both packs.
• Quality note: Aftermarket cells (likely Chinese-made) may have slightly lower voltage sag under heavy load (e.g., thick grass) compared to genuine Worx. For light-to-moderate use, performance is fine.
• Common gotcha: Some users report the battery indicator lights (if present) are less accurate than OEM. Monitor runtime rather than relying on the gauge.

Should You Buy It

Buy this if you need affordable, high-capacity backup batteries for a Worx 20V mower or trimmer and don’t mind aftermarket reliability—it’s a solid value at ~$30 per battery with a charger, especially for light-to-medium yard work. Skip it if you require OEM-certified safety specs or push your mower hard in wet or heavy grass.