2Packs 20V 6.0Ah Replacement for Worx 20V Battery, Compatible with Worx Battery WA3578 WA3575 WA3520 WA3525 Fit for 20V Cordless Tools WG630, WG322, WG543, WG163

What It Is

This is a 2-pack of 20V 6.0Ah lithium-ion replacement batteries for Worx 20V cordless tools, including lawn mowers, trimmers, and blowers. Each battery provides extended runtime compared to standard 2.0Ah or 4.0Ah packs.

Fitment & Compatibility

• Compatible Worx battery models: WA3578, WA3575, WA3520, WA3525 (and any tool that uses these packs).
• Compatible tool series: WG630 (mower), WG322 (trimmer), WG543 (blower), WG163 (edger), plus many other Worx 20V tools.
• Check before buying: Ensure your tool’s battery port matches the slide-on design (not the older post-style). Verify your charger is 20V Worx-compatible (most Worx 20V chargers work with these). These are aftermarket, not OEM—so expect slight differences in plastic texture or label, but dimensions and contacts are identical.
• Not for: 40V or 80V Worx tools, or tools from other brands without an adapter.

Key Things to Know

• Quality: 6.0Ah capacity offers 50–100% more runtime than standard 2.0Ah packs, but aftermarket cells may degrade faster than OEM over 1–2 years.
• Installation: Slide on and click—no tools required. Ensure battery is fully seated; a loose connection can cause tool shutdown.
• Common gotchas: Some users report the battery indicator LED may be less accurate than OEM. Also, these may not charge in Worx rapid chargers (stick to standard 20V charger). Check charger compatibility if you own a fast-charge model.
• Weight: 6.0Ah packs are heavier—adds noticeable weight to handheld tools like trimmers.

Should You Buy It

If you own multiple Worx 20V tools and need affordable runtime for larger yards (1/4 acre or more), this 2-pack is a solid value. It’s ideal for DIY users who don’t need OEM longevity and want to swap batteries without downtime. Not for pros who demand consistent performance over hundreds of cycles.