2 Pack 6.5Ah Replacement for Worx 20V Battery and Charger Compatible with All Worx Battery 20V WA3525 WA3575 WA3520 WG151s WG155s WG545s

What It Is

This is a 2-pack of 6.5Ah lithium-ion batteries compatible with the Worx 20V Power Share platform. Designed for use with Worx cordless lawn mowers, trimmers, blowers, and other 20V tools that accept WA3525, WA3575, or WA3520 batteries.

Fitment & Compatibility

Before buying, verify your tool uses the Worx 20V Power Share system (most Worx cordless lawn tools from 2015 onward). Check your existing battery model number—this pack replaces WA3525, WA3575, and WA3520. It fits all Worx 20V tools including WG151s, WG155s, WG545s, and newer models. Measure the battery compartment: these are slightly taller than the standard 2.0Ah or 4.0Ah batteries, so confirm clearance on older mowers or compact tools. This is an aftermarket replacement, not OEM Worx.

Key Things to Know

• Higher capacity: 6.5Ah provides up to 60% more runtime than a standard 4.0Ah battery—good for larger lawns or heavy-draw tools like mowers.
• No charger included: This is a battery-only pack. Use your existing Worx 20V charger or buy separately.
• Build quality: Aftermarket; some users report slightly shorter overall lifespan vs. OEM, but at this price, the value is strong for light-to-medium use.
• Compatibility check: Not for 40V or 56V Worx tools. Only for the 20V Power Share line.

Should You Buy It

Buy this if you own multiple Worx 20V tools and need extra runtime for mowing or trimming without stopping to recharge. It’s a budget-friendly alternative to OEM batteries, ideal for homeowners with moderate use—not for heavy commercial duty where OEM reliability is critical.