Worx WA3578 20V 4.0Ah Max Li-ion Battery - Walmart.com
WORX Battery Adapter to Ryobi – Power Tools Adapters
WORX Nitro Power Share 2-Tool 20-volt Brushless Power Tool Combo Kit with Soft Case (2 Li-ion Batteries Included and Charger Included) in the Power Tool Combo Kits department at Lowes.com