DeWalt 4.0Ah DCB204 vs DCB182 Battery Packs - Pro Tool Reviews
DEWALT DCB204BT-2 20V MAX XR Li-Ion 4Ah Compact Battery 2-Pack w/ Blue Tooth - RFBDirect.com
DEWALT 20V MAX 8in. Cordless Battery Powered Pole Saw Kit with (1) 4Ah Battery, Charger & Sheath DCPS620M1 - The Home Depot
DEWALT 20-Volt 4 Amp-Hour; Lithium Power Tool Battery Kit (Charger Included) in the Power Tool Batteries & Chargers department at Lowes.com
DEWALT 20V Cordless Brushless String Trimmer with 20V MAX Compact Lithium-Ion 4Ah Battery Pack and 12V to 20V MAX Charger DCST922BWCB240C - The Home Depot