2Pack WA3127 4.8Ah 18V Battery Replacement for Worx 18V Battery WA3152 WG152 WG150s WG250s WG541 WG900 WG901 Compatible with Worx Cordless Tools

What It Is

This is a 2-pack of aftermarket 18V 4.8Ah lithium-ion batteries designed as a drop-in replacement for Worx WA3127 and WA3152 batteries. They power most Worx 18V cordless lawn mowers, string trimmers, blowers, and other tools in the Worx 18V platform (e.g., WG152, WG150s, WG250s, WG541, WG900, WG901).

Fitment & Compatibility

• Check your tool’s voltage: This battery is 18V only. It will not work with 20V, 40V, or 56V Worx tools.
• Model match: Compatible with Worx models using WA3127 or WA3152 batteries. Verify your tool’s model number (e.g., WG152, WG250s) against the list above.
• Physical dimensions: The battery is slightly taller than some original Worx packs. Measure your battery compartment depth (approx. 5.5” x 3” x 2.5”) to ensure clearance, especially on compact mowers.
• OEM vs aftermarket: This is a third-party replacement, not made by Worx. It will work but may not have the same over-discharge protection or low-temp charging safeguards.

Key Things to Know

• Installation: No tools needed. Slide onto the tool base until it clicks. If it doesn’t lock, check the alignment tabs for debris.
• Run time: 4.8Ah capacity is about 30% more than a standard 2.0Ah pack. Expect 30–45 minutes of mowing on a small lawn (1/4 acre) or longer on lighter tools like trimmers.
• Charging: Use only a Worx 18V charger (model WA3742 or WA3880). Do not use a 20V or 40V charger – risk of fire or battery damage.
• Common gotcha: The battery may be slightly heavier than original (approx. 1.2 lbs each). If your tool is already unbalanced, this could add strain.

Should You Buy It

If you own multiple 18V Worx tools and need extra runtime without buying OEM (which costs 2–3x more per battery), this 2-pack is a solid value. It’s best for light to medium use – not for professionals who need daily reliability or cold-weather performance. Check fitment first, and you’ll save money with decent run time.