WORX Battery Compatibility: Complete PowerShare, 4-Pin & 6-Pin Guide

WORX Battery Compatibility – PowerShare Overview

WORX promotes PowerShare as a battery system that allows one family of 20V lithium-ion batteries to operate a wide selection of cordless power tools, lawn equipment and lifestyle products. However, there is an important complication that is often overlooked:

Not every WORX PowerShare battery uses the same physical connector.

The two most commonly encountered versions are:

• WORX PowerShare 4-pin
• WORX PowerShare 6-pin

There is also a less common 5-pin WORX battery system associated with certain tools and markets.

A 4-pin and a 6-pin WORX battery may both display the WORX name, the PowerShare logo and the same 20V voltage rating while remaining physically incompatible. The battery rails, terminal arrangement and tool receptacle must all match.

Quick answer: A WORX PowerShare battery is directly interchangeable only when the battery and tool use the same compatible PowerShare connector. A 4-pin battery does not directly fit a 6-pin tool, and a 6-pin battery does not directly fit a 4-pin tool.

What Is the WORX PowerShare Battery System?

PowerShare is WORX’s current multi-tool battery platform. It is based primarily on removable 20V lithium-ion battery packs that can be shared across compatible WORX cordless products.

The system is described as stackable because several 20V batteries can be combined in higher-voltage equipment:

• 20V tool: normally uses one 20V PowerShare battery
• 40V tool: normally uses two 20V PowerShare batteries
• 60V tool: certain market-specific products may use three 20V batteries
• 80V tool: normally uses four 20V PowerShare batteries

The tool determines how many batteries are required. Installing a higher-capacity battery does not turn a 20V tool into a 40V tool. Battery capacity affects available runtime and, depending on the battery design, its ability to support demanding loads—but it does not change the tool’s voltage class.

Does “One Battery Powers All” Mean Every WORX Battery Fits?

No. The PowerShare compatibility promise applies within the matching PowerShare battery interface.

WORX batteries sold in different countries can have different connector designs. This is why two batteries that appear nearly identical from the outside may not slide into the same tool.

The following details must all be compatible:

• Battery voltage platform
• Battery chemistry
• Slide rails and housing shape
• Number and arrangement of electrical contacts
• Battery release and locking mechanism
• Tool or charger electronic requirements

For example, a 20V PowerShare 4-pin battery and a 20V PowerShare 6-pin battery belong to the same general voltage class, but they use different physical interfaces. They are therefore not directly interchangeable.

PowerShare should not be interpreted as worldwide compatibility between every WORX battery ever manufactured. It is always necessary to verify the connector used by the specific battery, tool and charger.

WORX 4-Pin vs 6-Pin Batteries

The most important compatibility difference for current WORX owners is the distinction between the 4-pin and 6-pin PowerShare interfaces.

These market descriptions are general patterns, not guarantees. WORX products can be imported, resold internationally or revised during their production life. The United Kingdom is particularly important because both 4-pin and 6-pin products may be encountered there.

Do not order a battery or adapter based only on the seller’s country, the colour of the tool or the PowerShare logo. Inspect the actual battery connection.

Are WORX 4-Pin and 6-Pin Batteries Interchangeable?

No. A WORX 4-pin battery and a WORX 6-pin battery are not directly interchangeable.

This applies in both directions:

• A WORX 4-pin battery does not directly fit a WORX 6-pin tool
• A WORX 6-pin battery does not directly fit a WORX 4-pin tool
• A 4-pin charger should not be assumed to support a 6-pin battery
• A 6-pin charger should not be assumed to support a 4-pin battery

The difference is not limited to the number of visible contacts. The rails, housing, locking features and terminal positions can also differ.

Do not force a battery into a tool because the voltage labels match. If a battery does not slide and lock into position normally, it is not a direct fit.

A purpose-built adapter may allow certain 4-pin and 6-pin combinations, but the adapter must be designed for the exact battery → tool direction.

WORX 4-Pin and 6-Pin Compatibility Chart

Important: Matching the number of contacts is an essential first step, but it is not the only requirement. The battery and tool must also have matching rails, housing geometry, voltage and electronic requirements.

How to Identify a WORX 4-Pin or 6-Pin Battery

The most reliable identification method is to inspect the terminal side of the battery and the battery receptacle on the tool.

1. Remove the battery

Turn the tool off and remove the battery normally. Do not attempt to inspect the connector while the tool is operating.

2. Look at the battery terminals

Examine the portion of the battery that slides into the tool. Count the visible metal contacts that form the electrical connection.

Do not count:

• Plastic guide rails
• Openings without a metal contact
• Screws or fasteners
• Decorative moulding in the battery housing

3. Inspect the tool slot

Look inside the battery receptacle on the tool. Compare its terminal arrangement, guide rails and locking position with the battery.

4. Check the model labels

Record the complete battery and tool model numbers. Battery numbers often begin with WA, while WORX tool numbers commonly begin with letters such as WX or WG.

Model numbers are helpful, but they should not replace a physical inspection. Similar model families may be sold with different battery interfaces in different markets.

5. Verify the country of purchase

Knowing whether the battery and tool were originally sold in the United States, Canada, the United Kingdom, Europe, Australia or another region can help identify the platform. However, used and imported tools may not match the local market’s usual connector.

WORX Battery Compatibility by Country

WORX has sold different PowerShare connector variants in different regions. The following table can help narrow down the possibilities, but it should not replace inspection of the actual connector.

The colour of the tool is not a reliable way to distinguish these connectors. Orange WORX tools and similarly styled batteries can use either interface.

Can a US WORX Battery Be Used in a UK, European or Australian Tool?

Not automatically.

North American WORX PowerShare products commonly use the 6-pin connection, while many UK, European and Australian products use a 4-pin connection. Therefore, a US or Canadian battery may not physically fit a tool purchased in another region, even when both are labelled 20V PowerShare.

The reverse situation also applies: an international 4-pin battery does not directly fit a North American 6-pin tool.

The safest approach is to compare:

• The number and arrangement of metal contacts
• The battery rails
• The locking tab
• The tool’s battery slot
• The complete battery and tool model numbers

When the interfaces differ, a correctly designed regional conversion adapter may be required.

The Less Common WORX 5-Pin Battery Variant

A less common WORX 20V battery interface uses a 5-pin connection. It is sometimes described by sellers as the green or larger-foot WORX battery platform and is often associated with battery numbers such as WA3593, WA3595 and WA3401.

This version should not be confused with either the standard 4-pin or 6-pin PowerShare connection.

Because availability and model information for the 5-pin system can vary, please contact us before ordering an adapter. Include clear images of:

• The battery terminal side
• The complete battery label
• The tool’s battery receptacle
• The complete tool label

We can use those images to help determine which connection you have and whether a suitable adapter is available.

WORX PowerShare Standard vs PRO vs ProPlus Batteries

WORX offers several battery performance levels within the current PowerShare ecosystem.

Standard PowerShare batteries

Standard PowerShare batteries are intended for general cordless tool and lawn-equipment use. They are available in several capacities depending on the country and product range.

PowerShare PRO batteries

PowerShare PRO batteries use additional battery-management, cooling and housing technology intended to improve performance, runtime, heat management and impact protection.

They are especially suitable for demanding WORX Nitro tools, but Nitro does not represent a separate battery connector. A compatible standard PowerShare battery can still operate a Nitro tool, while a PRO battery can be used with compatible non-Nitro PowerShare tools.

PowerShare ProPlus batteries

PowerShare ProPlus is a newer battery-performance category featuring updated cell and pack technology. It remains part of the PowerShare platform and is not a separate voltage system.

The words PRO, ProPlus or Nitro do not resolve the 4-pin versus 6-pin question. The battery must still match the tool’s regional connector and physical interface.

Does Battery Capacity Affect WORX Compatibility?

Battery capacity is measured in amp-hours, commonly written as Ah. Depending on the market, WORX PowerShare batteries may be available in capacities such as 1.5Ah, 2.0Ah, 2.5Ah, 4.0Ah, 5.0Ah or 8.0Ah.

Within the same compatible connector family:

• A higher Ah rating normally provides longer runtime
• A lower Ah battery is normally lighter and more compact
• The battery voltage remains in the same 20V class
• The tool does not become a higher-voltage tool
• PowerShare PRO or ProPlus technology may improve performance under demanding loads

For example, a compatible 4.0Ah battery can generally replace a compatible 2.0Ah battery without changing the tool voltage.

However, very large batteries can create a physical-clearance issue. A high-capacity battery may be electrically compatible but too large for a tool with an enclosed battery compartment, cover or restrictive surrounding housing.

Check the available space around the battery slot before purchasing an unusually large-capacity pack.

Using WORX Batteries in 40V, 60V and 80V Tools

Current higher-voltage PowerShare equipment obtains its voltage by using multiple 20V batteries.

For a multi-battery tool, it is best to use batteries that have:

• The same compatible connector
• The same amp-hour capacity
• A similar age and condition
• A similar state of charge

If different-capacity or unevenly charged batteries are installed, the tool’s usable runtime may be limited by the battery that reaches its discharge limit first.

A 40V tool designed for two PowerShare batteries will not normally operate with only one battery installed.

Current PowerShare 40V vs Older Single-Battery WORX 40V

Not every WORX product labelled 40V belongs to the current two-battery PowerShare system.

Current WORX 40V PowerShare tools generally use two removable 20V PowerShare batteries. Older WORX 40V equipment may instead use a single dedicated 40V battery pack, such as batteries from the older WA3536-style family.

These systems should be treated separately:

• Two 20V PowerShare batteries are intended for current compatible 40V PowerShare tools
• An older single-pack 40V battery uses a different housing and connection
• A dedicated legacy 40V battery is not replaced by inserting one current 20V battery
• Matching voltage wording does not make the physical systems interchangeable

When identifying an older 40V tool, check whether it has two separate PowerShare battery slots or one larger dedicated battery receptacle.

Are WORX 18V and 20V Batteries the Same?

In lithium-ion tool systems, 18V and 20V MAX commonly describe the same basic five-cell voltage class:

• 18V refers approximately to the nominal operating voltage
• 20V MAX refers approximately to the maximum fully charged voltage

For certain WORX product families, batteries labelled 18V and 20V are electrically part of the same platform. WORX has sold batteries such as the WA3525 as compatible with both matching 18V and 20V tools.

However, the voltage equivalence does not guarantee that every WORX 18V battery from every country or production period will physically fit every current 20V tool.

Before treating an 18V and 20V WORX battery as interchangeable, verify:

• They use the same lithium-ion platform
• The connector has the same pin arrangement
• The rails and locking mechanism match
• The tool and battery documentation list compatible models

Older nickel-cadmium or nickel-metal-hydride batteries do not become compatible simply because they display an 18V rating.

For a more detailed explanation, see our 18V vs 20V cordless-tool battery guide.

Older WORX Battery Systems

WORX has produced cordless products using several voltage platforms over the years. Not all of them belong to PowerShare.

Do not identify a battery only by brand and voltage. Check its chemistry, housing, model number and physical connection.

WORX Charger Compatibility

A WORX battery should be charged with a charger explicitly designed for its battery platform and connector.

Before using a charger, verify:

• The charger supports the battery’s voltage
• The charger is designed for the same battery chemistry
• The terminals and rails match
• The battery model is listed as compatible
• The charger input voltage is suitable for the country where it is being used

A 4-pin battery should not be forced onto a 6-pin charger, and a 6-pin battery should not be forced onto a 4-pin charger.

Do not charge a battery through a standard power-tool battery adapter. Remove the battery from the adapter and charge it with the correct charger for its original platform unless a product is explicitly designed and approved for charging.

Using Battery Adapters With WORX Tools

A battery adapter can allow certain batteries and tools with otherwise incompatible connections to operate together. Examples may include:

• Using a battery from another supported brand on a WORX PowerShare tool
• Using a WORX PowerShare battery on another supported tool platform
• Connecting certain WORX 4-pin batteries to 6-pin tools
• Connecting certain WORX 6-pin batteries to 4-pin tools

Battery adapters are directional.

An adapter described as “WORX 4-pin battery to WORX 6-pin tool” is designed for that specific direction. It should not be assumed to work as “WORX 6-pin battery to WORX 4-pin tool.”

The product description should clearly identify:

• The battery platform inserted into the adapter
• The tool platform that receives the adapter
• The connector version
• The supported voltage
• Any battery-management or protection requirements

Never force an adapter into a tool, alter the terminals or connect a battery using exposed wires.

WORX Battery Compatibility Frequently Asked Questions

Are all WORX PowerShare batteries interchangeable?

No. PowerShare batteries are interchangeable only within a compatible PowerShare interface. A battery may be electrically part of the 20V PowerShare system while using a different regional 4-pin, 5-pin or 6-pin physical connection.

What is the difference between a WORX 4-pin and 6-pin battery?

The batteries use different terminal arrangements and can also have different rails, housings and locking features. They are not directly interchangeable even when both display a 20V PowerShare label.

Will a WORX 4-pin battery fit a 6-pin tool?

No. A purpose-built 4-pin-battery-to-6-pin-tool adapter would be required, provided an adapter is available for the exact platforms.

Will a WORX 6-pin battery fit a 4-pin tool?

No. This is the opposite adapter direction and requires a product specifically designed for a 6-pin battery and 4-pin tool.

Are WORX PowerShare PRO batteries compatible with standard PowerShare tools?

Yes, when the battery and tool use the same compatible regional PowerShare interface. PowerShare PRO describes battery technology and performance; it does not eliminate the need to match the connector.

Are WORX ProPlus batteries compatible with older PowerShare tools?

They remain part of the PowerShare ecosystem, but the connector and physical clearance must match. Larger or differently shaped batteries may not fit tools with enclosed battery compartments.

Can a 20V WORX battery operate a 40V tool?

A current 40V PowerShare tool normally requires two compatible 20V PowerShare batteries. Both battery positions must generally be filled.

Can a 20V WORX battery operate an 80V tool?

Current 80V PowerShare equipment normally uses four compatible 20V PowerShare batteries.

Can I mix different Ah batteries in a WORX 40V tool?

The tool may accept compatible batteries with different capacities, but using a matching pair with the same capacity, condition and state of charge is recommended. Runtime can be limited by the weaker or less-charged battery.

Can I use a US WORX battery in an Australian or European tool?

Not automatically. North American batteries commonly use a 6-pin interface, while many Australian and European tools use a 4-pin interface. Inspect both connectors before assuming compatibility.

Can I identify a WORX connector from the tool colour?

No. Tool colour is not a reliable connector identifier. Inspect the terminals, rails and model labels.

What should I do if I have a WORX 5-pin battery?

Please contact us with images of the battery terminals, battery label, tool receptacle and tool label. The 5-pin platform is less common and should be verified individually.

Can I charge a WORX battery while it is attached to an adapter?

Not through a standard tool adapter. Remove the battery and use the charger designed for its original battery platform.

Important Disclaimer – Third-Party Battery Adapters

Battery adapters are third-party accessories. They are not manufactured by, licensed by or endorsed by Positec Tool Corporation or the WORX brand.

Using a third-party adapter may fall outside the battery or tool manufacturer’s specifications and may affect warranty coverage. Always confirm that the adapter is designed for the exact battery platform, tool platform, connector version and direction of use.

An adapter does not automatically reproduce every communication or monitoring function provided by the original battery. Suitability may vary according to the tool, battery, current demand and adapter design.

Do not use damaged, swollen, modified or excessively hot batteries. Do not force incompatible components together, modify terminals or charge a battery through an adapter that is not specifically designed for charging.

WORX PowerShare Battery Adapter Options

Because WORX PowerShare products can use different regional connectors, verify whether your battery and tool are 4-pin, 5-pin or 6-pin before ordering.

View WORX PowerShare Battery Adapters

Use the Battery Adapter Finder

If the connection is unclear, contact us with images of the battery, tool and labels so we can help identify the correct platform.

Summary: WORX Battery Compatibility

• WORX PowerShare is primarily based on stackable 20V lithium-ion batteries
• One battery is normally used for 20V tools, two for 40V tools and four for 80V tools
• WORX PowerShare products can use different 4-pin and 6-pin regional connectors
• A 4-pin WORX battery does not directly fit a 6-pin WORX tool
• A 6-pin WORX battery does not directly fit a 4-pin WORX tool
• The United States and Canada commonly use the 6-pin version
• Europe and Australia commonly use the 4-pin version
• Both 4-pin and 6-pin products may be encountered in the United Kingdom
• Country-based identification is not guaranteed; always inspect the connector
• A less common 5-pin variant also exists and should be individually verified
• PowerShare PRO, ProPlus and Nitro do not represent separate voltage platforms
• Higher Ah capacity generally provides more runtime but can increase battery size
• Current two-battery 40V PowerShare tools are different from older single-battery 40V systems
• Older 24V, 32V, 40V, 48V, 56V and non-lithium systems are not automatically compatible with current PowerShare batteries
• Battery adapters are directional and must match the exact battery and tool interfaces
• Standard tool adapters should not be used to charge batteries