Worx 20V Battery Compatibility: What Batteries Work With Worx 20V Tools

A 20V pack looks like it should fit anything stamped 20V, and that assumption is how people end up with a battery that clicks into place but never powers the tool. Worx builds its cordless line around the PowerShare platform, and the logo on the product — not the voltage number on the sticker — is what tells you a pack will work. Get that one identifier right and the rest of the compatibility question falls into place.

Which Worx 20V Batteries Actually Fit

Every battery in the current PowerShare lineup fits the same 20V tools; the model number decides capacity and runtime, not whether it seats and runs. Worx lists seven packs across the standard and PRO lines, from a 2.0 Ah starter to an 8.0 Ah high-capacity unit.

The PRO line adds intelligent battery management, heat protection, and impact protection on top of the standard cells. The 4.0 Ah PRO pack is rated at roughly twice the runtime of a 2.0 Ah battery, though real-world numbers swing with the tool, the load, and the material you’re cutting. If you want a deeper look at which pack makes sense for your setup, this breakdown of the top Worx 20V battery options covers capacity-versus-cost trade-offs in more detail.

How PowerShare Handles 20V, 40V, and 80V Tools

Worx designed PowerShare so the same battery serves your drill, your string trimmer, and your bigger outdoor equipment without a separate charging ecosystem for each.

That flexibility has a hard edge. A 40V tool needs its specified pair configuration, and dropping a single 20V pack into it won’t work any more than pairing mismatched packs will. Voltage on the tool’s label tells you what the product expects; the number of packs it holds tells you how the platform delivers it.

Chargers, Capacity, and the Mistakes That Cost Money

PowerShare batteries do not all ship with a charger, and the charger that came with your old kit may not be rated for your new pack. Worx lists WA3742, WA3881, WA3764, WA3770, WA3884, and WA3835 as compatible with PowerShare PRO batteries, and the 2.0 Ah WA3669 kit recommends the WA3881 60-minute quick charger or the WA3884 dual-port model.

A few traps account for most unhappy purchases:

• Voltage alone isn’t proof. Confirm the PowerShare or PowerShare PRO logo before buying — a Worx 20V battery from a non-PowerShare system won’t cross over.
• Ah is runtime, not power. A 5.0 Ah pack doesn’t make a tool stronger; it runs longer before you swap.
• No charger in the box. Several official listings state “charger not included” outright, so budget for one if you’re starting fresh.
• Higher-voltage tools need their configuration. Never substitute a single pack where a paired system is required, and stick to the charger models Worx lists for your specific battery family.

Inspect packs and chargers for cracks or corrosion, and follow the manual for charging temperatures and storage. The 8.0 Ah PowerShare PRO page (WA3678) notes that the battery ships without a charger — a detail worth checking on every listing before checkout.