Amazon.com: Synergy Digital Power Tool Battery, Compatible with DeWalt DW990K-2 Power Tool, (Li-ion, 14.4V, 3000mAh) Ultra High Capacity, Replacement for DeWalt DE9141 Battery : Tools & Home Improvement
DEWALT 20-Volt Lithium Power Tool Battery Adapter in the Power Tool Batteries & Chargers department at Lowes.com