DEWALT DCD771 Battery, Discount DCD771 Power Tools Battery by BatteryEase
Synergy Digital Power Tool Battery, Compatible with DeWalt DCD771 Power Tool, (Li-ion, 18V, 6000mAh) Ultra High Capacity, Replacement for DeWalt DCB180, DCB181, DCB181-XJ, DCB182, DCB182-XE Battery - Walmart.com
Synergy Digital Power Tool Battery, Compatible with DeWalt DCD771 Power Tool, (Li-ion, 20V, 7500mAh) Ultra High Capacity, Replacement for DeWalt DCB102 Battery - Walmart.com
DEWALT 20V MAX Cordless 1/2 in. Drill/Driver, (2) 20V 1.3Ah Batteries, Charger and Bag DCD771C2 - The Home Depot