• Replacement for Worx 20v lithium battery wa3520 wa3525 wa3575 wa3578; Fit for Worx 20v charger wa3732 wa3731 wa3742 wa3847
• Compatible with Worx 20 volt cordless power tools wg151 wg151.5 wg155 wg155.5 wg251 wg251.5 wg255 wg540 wg540.5 wg890 wg891 series
• Overload cut-off function prevents overcharging, over discharge and over current, provides short circuit protection and steady voltage circuit
• Made of premium battery cells without memory effect, can be charged or discharged freely, charging at any time will have no effect on the battery, extends the battery lifespan
• We provide 30 days free to replace or refund service. If there have any problem during using, please contact us: in "YOUR ORDER" options click the "contact seller"