Powilling 20V Lithium Battery for Worx 20V Battery and Charger Kit, Compatible with All Worx Batteries WA3520 WA3525 WA3575 WG151s WG251s WG540s WG545s WG890 WG89

What It Is

The Powilling 20V Lithium Battery is an aftermarket replacement power source designed for Worx 20V cordless lawn mowers, trimmers, blowers, and other outdoor tools. It provides 2.0Ah of runtime for light-duty yard work.

Fitment & Compatibility

Before buying, confirm your Worx tool uses the 20V slide-on battery platform (not the older 12V or 40V systems). This battery is compatible with Worx models WA3520, WA3525, WA3575, and tools like WG151s, WG251s, WG540s, WG545s, WG890, and WG89. It will not fit Worx 40V tools or any other brand’s batteries. Check your tool’s battery slot shape—this is a standard slide-in design, not a post-style. Measure your existing battery: the Powilling is slightly smaller than OEM Worx packs, so it may have a looser fit in some tool handles.

Key Things to Know

• Quality & runtime: Rated 2.0Ah, same as OEM Worx WA3525. Real-world runtime is about 20-30 minutes on a mower (depending on grass thickness). Expect slightly less capacity than a genuine Worx battery after a few months.
• Installation: No tools needed—slide onto the tool until it clicks. Some users report a slightly wobbly fit; if it feels loose, check the latch is fully engaged.
• Charging: Works with any Worx 20V charger (e.g., WA3740, WA3730). Charging time is about 1 hour. Do not use a 40V charger—it will damage the battery.
• Common gotchas: This is an aftermarket battery, so it lacks the full over-discharge and temperature protection of OEM Worx packs. Avoid draining it completely, and store it indoors in moderate temperatures. Some tools may not engage the low-battery warning light correctly.

Should You Buy It

Buy this if you need a spare 20V battery for light-use Worx tools (trimmer, blower, small mower) and want to save money over OEM. Skip it if you rely on heavy daily mowing, need maximum runtime, or prefer the reliability and safety features of a genuine Worx battery.