4packs 4000mAh 20V Replacement Worx Black WA3520 Battery Compatible with WA3512 WA3511 WA3520 WA3525

1) Made with premium battery cells, charges quickly and powers your cordless tool without waning or draining. 2) Can be charged freely without memory effect, Integrated microchip prevents overcharging and lengthens battery life. 3) Higher capacity provides longer running time, make you work more efficiently and powerfully. 4) This batteries are FCC, ROHS, CE certified,Product are tested by manufacturer to match OEM products. 5) All-weather performance: delivers fade free power in extreme jobsite conditions