【Upgrade】 6.0Ah 20V Replace Battery for Worx 20V Battery Compatible with Worx 20 Volt Lithium WA3520 WA3525 WG151s WG155s WG251s WG255s WG540s WG545s WG890 WG891 Cordless Power Tools Battery

What It Is

This is a high-capacity 6.0Ah replacement battery for Worx 20V cordless tools, including lawn mowers, trimmers, and blowers. It provides longer runtime than the standard 2.0Ah or 4.0Ah packs, ideal for larger yards or frequent use.

Fitment & Compatibility

• Works with: Worx 20V lithium-ion tools listed in the title (WA3520, WA3525, WG151s, WG155s, WG251s, WG255s, WG540s, WG545s, WG890, WG891) and most other Worx 20V tools using the same slide-on battery mount.
• Check before buying: Confirm your tool uses a 20V slide-on battery (not the older 18V or 40V platform). Measure the battery compartment depth – this 6.0Ah pack is taller than 2.0Ah/4.0Ah packs and may not fit under some mower decks or in tight tool handles. Verify the connector shape: Worx 20V batteries have a flat, rectangular foot with two rails.
• OEM vs aftermarket: This is a third-party replacement, not made by Worx. It will charge in any Worx 20V charger (not included), but may not communicate charge status on tool LEDs.

Key Things to Know

• Runtime: 6.0Ah gives roughly 3x the runtime of a 2.0Ah battery – expect 45–60 minutes of mowing on a small lawn.
• Installation: Slides on and off exactly like the original; no tools needed. Ensure the locking tab clicks firmly.
• Quality note: Some users report slightly shorter lifespan than OEM packs after 1–2 seasons of heavy use. Avoid deep discharging (below one LED) to prolong life.
• Weight: Heavier than standard packs – may affect balance on handheld tools like trimmers.

Should You Buy It

If you already own multiple Worx 20V tools and need extended runtime without buying a second OEM battery, this is a budget-friendly upgrade. It’s best for light-to-medium use on lawns under ¼ acre. Skip it if you need rugged daily commercial use or perfect OEM fit in tight compartments.