3.5 Ah 32V Lithium Battery Replacement for WA3537 Worx 32V Battery Compatible with WG275, WG924.4, WG175.1, and WG575.1 Worx 32 Volt Tools

What It Is

This is a 3.5 Ah 32V lithium-ion replacement battery for Worx 32V cordless lawn mowers and outdoor power tools. It’s designed to power mowers like the WG275, WG924.4, WG175.1, and WG575.1, providing runtime for medium-sized lawns without the weight of higher-capacity packs.

Fitment & Compatibility

Before buying, confirm your tool’s voltage is 32V (not 20V or 40V). This battery replaces the WA3537 OEM model and fits Worx 32V tools listed above. Check your mower’s model number on the underside or back of the deck—WG275, WG924.4, WG175.1, and WG575.1 are confirmed compatible. It will not work with older Worx 20V or 40V systems. Measure the battery compartment: this pack is roughly 5.5 x 3.5 x 4 inches. If your mower uses a different battery shape (e.g., slide-on vs. post-style), it won’t fit. This is an aftermarket replacement, not Worx OEM, so charging times and lifespan may vary slightly.

Key Things to Know

• Quality & runtime: 3.5 Ah provides about 30-45 minutes of cutting on a single charge, depending on grass thickness and mower speed. Expect slightly shorter runtime than the original WA3537 after a few months.
• Installation: Easy—remove old battery, slide new one into the mower’s battery slot until it clicks. No tools needed. Ensure the latch engages fully to avoid power loss during use.
• Charging: Use only a Worx 32V charger (model WA3828 or WA3880). Aftermarket chargers may not charge correctly or could damage the battery. The battery has no charge indicator; check voltage with a multimeter if unsure.
• Common gotchas: The battery may be slightly tighter in the compartment than OEM—wiggle gently if it doesn’t slide in. Do not store fully discharged; recharge after each use to maximize lifespan.

Should You Buy It

Buy this if you need a budget-friendly replacement for a worn-out WA3537 in a compatible Worx 32V mower and don’t mind slightly shorter runtime than the original. It’s a solid value for occasional use or as a spare, but for heavy-duty or commercial mowing, invest in an OEM battery for better long-term reliability.