Shentec 2-Pack 3.0Ah 18V&20V Battery Compatible with Worx WA3512 | WA3512.1 WA3511,Also Compatible with 20V WA3520 WA3525 Li-ion Battery Pack

What It Is

This is a two-pack of 3.0Ah lithium-ion batteries designed as a drop-in replacement for Worx 18V and 20V cordless lawn mowers, trimmers, blowers, and other outdoor power tools. Each battery delivers 54 watt-hours of capacity, suitable for mid-size yards or extended runtime on smaller tools.

Fitment & Compatibility

• Direct fit for Worx models using WA3512, WA3512.1, WA3511, WA3520, or WA3525 battery packs.
• Check your tool’s voltage rating: Works with both 18V and 20V Worx tools, but confirm your mower or tool is labeled 18V or 20V max (not 40V or 24V).
• Not compatible with Worx 40V/80V platforms, or any non-Worx brand tools without an adapter.
• Physical size: Each battery measures roughly 5.2 x 3.1 x 2.6 inches. Measure your battery compartment depth and width before ordering—some older Worx mowers have tight tolerances.
• OEM vs aftermarket: These are aftermarket cells (Shentec brand). They use standard Worx slide-in connector, but charge times may differ slightly from genuine Worx batteries.

Key Things to Know

• Installation: Slide on until it clicks. No tools needed. If it doesn’t click, check for debris in the slot.
• Charging: Use your existing Worx 18V/20V charger. Do not mix with 40V chargers—risk of damage or fire.
• Capacity vs OEM: 3.0Ah is a middle-ground option—more runtime than 2.0Ah stock packs, but heavier. Expect ~30–45 minutes on a self-propelled mower, longer on a trimmer.
• Common gotcha: These batteries may have a slightly different plastic finish (matte vs glossy) and sit a bit looser in some older Worx tools. If you notice rattling, add a thin foam strip inside the compartment.

Should You Buy It

Buy this if you need a budget-friendly spare or replacement for your Worx 18V/20V lawn mower or trimmer and don’t mind aftermarket performance that’s close to OEM. Skip it if you require exact fitment for heavy commercial use, or if your tool is a 40V model—stick with genuine Worx batteries for guaranteed compatibility and warranty support.