WORX Battery 20V 4.0Ah Power Share PRO - Longer Runtime

Our review of the WORX Battery 20V 4.0Ah Power Share PRO finds it best for homeowners and tradespeople who need a reliable, higher-capacity battery for the WORX Power Share ecosystem. The single biggest reason to buy is straightforward: it delivers substantially longer runtime than the standard 2.0Ah cells while adding heat and impact protection, making it a practical upgrade for anyone running cordless tools or outdoor equipment for extended tasks. The updated look does not change compatibility, so it fits the same 140+ Power Share devices users already own.

Key Features

• Compatibility: Works with all Worx 20V, 40V, and 80V cordless tools and outdoor equipment in the Power Share line so the same battery can power many devices.
• Extended runtime: The 4.0Ah capacity delivers roughly 2.0x the runtime of a traditional 2.0Ah battery, letting tasks run longer between charges.
• Intelligent battery management: The battery management system optimizes individual Li-Ion cells to enhance power output, performance, and overall runtime during demanding use.
• Thermal and impact protection: Thermoplastic housing keeps cells cooler for longer and 360 cell protection increases resistance to vibration and impact for heavy-duty projects.
• Charge-level indicator: Built-in charge indicator provides a quick visual of remaining power so users can plan work without surprises.
• Tool release: Push-button release makes swapping batteries quick and straightforward during multi-battery workflows.

Who It's For

This battery suits homeowners, landscapers, and DIY enthusiasts who already use the Worx Power Share platform and need longer runtime for mowing, cutting, drilling, or running multiple tools on a job. It is particularly useful for users of Worx Nitro high-performance cordless tools that benefit from higher-capacity cells.

Those who should look elsewhere include buyers who need an all-in-one kit with a charger included, since this listing does not include a charger, and users who never exceed short runtimes on light tasks and do not require the added runtime or rugged protection features.

Pros & Cons

Pros

• Higher capacity delivers significantly more runtime over 2.0Ah batteries for extended jobs.
• Intelligent battery management and thermoplastic construction help maintain performance and reduce heat-related wear.
• Broad compatibility across the Power Share line makes it a flexible spare or replacement battery.
• Charge-level indicator and push-button release improve usability during multi-battery work sessions.

Cons

• Battery life reports are mixed among customers, with some users experiencing shorter-than-expected runtime in heavy use.
• Charger is not included, so buyers without a compatible charger must purchase one separately.

Specifications

Our Verdict

The WORX 20V 4.0Ah Power Share PRO battery is a sensible upgrade for anyone in the Worx ecosystem who needs longer runtime and tougher protection for demanding tasks. While some customers report mixed runtime in extreme use, the intelligent cell management, thermal protection, and broad compatibility make this a good-value spare or replacement for serious DIYers and professionals.

Frequently Asked Questions

Is this battery compatible with older Power Share tools?
Yes, it is compatible with all products within the Power Share platform, including older 20V tools.

Does the package include a charger?
No, the charger is not included, so you will need a compatible Worx charger if you do not already own one.

How much longer does the 4.0Ah battery run vs a 2.0Ah?
The 4.0Ah battery is rated to deliver roughly 2.0x the runtime of a traditional 2.0Ah battery, though real-world runtime varies by tool and task.