Powerextra 2 Pack 5.0Ah Replacement Worx 20v Lithium Battery, Compatible with 20V Worx Battery Charger WA3770 and Worx 20V Power Tools Series WA3520 WA3578 WA3525, Replace for Worx 20V Battery - - Amazon.com
Amazon.com : WORX WG644 40V Power Share Hydroshot Portable Power Cleaner (2x20V Batteries) with Hydroshot Deluxe Cleaning Accessory Kit, Black : Tools & Home Improvement