Power Tool Battery, Li-Ion 18V
From Amazon
Dewalt DCB184B-XJ Bluetooth Slide Li-Ion Battery Pack 18 Volt 5.0Ah, 18 V, Black/Yellow
Powertool World
DeWalt DCB184B 18v 5Ah XR Tool Connect Bluetooth Slide Battery
Tools and Parts Direct
DeWalt DCB184B 18 Volt 5.0Ah XR Li-Ion Bluetooth Slide Battery Pack