WORX 20 V Lithium-ion Battery 4.0 Ah PowerShare Pro 2 pcs WA3674.2

What It Is

This is a two-pack of WORX 20V 4.0 Ah lithium-ion batteries (model WA3674.2) using the PowerShare Pro platform, designed to power all WORX 20V cordless tools and lawn equipment—including string trimmers, blowers, chainsaws, and hedge trimmers.

Fitment & Compatibility

• Brand & platform: Only compatible with WORX 20V PowerShare tools. Does not fit WORX 40V, 56V, or other brands.
• Tool compatibility: Works with any WORX tool that accepts the standard 20V slide-in battery (e.g., WG163, WG184, WG896, WG545). Check your tool’s manual or current battery model number.
• Physical fit: The 4.0 Ah battery is slightly larger than the 2.0 Ah version—ensure your tool’s battery compartment has enough clearance (especially on compact trimmers or older models).
• Charger: Uses the standard WORX 20V charger (included with most tools or sold separately). Does not charge on 40V or 56V chargers.
• OEM vs aftermarket: This is a genuine WORX OEM battery. Aftermarket copies may have different cell quality and no warranty.

Key Things to Know

• Quality & runtime: 4.0 Ah provides roughly double the runtime of a 2.0 Ah battery—good for medium to large yards (30–60 minutes per battery depending on load). Cells are quality Samsung/LG (typical).
• Installation: Zero difficulty—slides on and clicks. No tools needed.
• Common gotchas:
  • Batteries ship partially charged—fully charge before first use.
  • Do not store fully discharged for long periods; recharge every 3–4 months if unused.
  • The 4.0 Ah is heavier than 2.0 Ah; may slightly increase tool weight.
• Warranty: Comes with WORX’s 2-year limited warranty (register online). Aftermarket batteries often have no warranty.

Should You Buy It

If you own multiple WORX 20V tools and want reliable, long-running batteries with no compatibility guesswork, this two-pack is a solid value. Best for users who need more runtime than the stock 2.0 Ah batteries provide, especially for larger lawns or continuous trimming. Not needed if you already have several 4.0 Ah batteries or only use light-duty tools for small jobs.