Bosch 2-Tool 18-Volt Brushless Power Tool Combo Kit with Soft Case (2-Batteries Included and Charger Included) in the Power Tool Combo Kits department at Lowes.com
Bosch® CORE18V™ 18-Volt Lithium-Ion 4.0Ah Battery at Menards®
Bosch GBA 12V 4.0Ah Battery – vertexpowertools
Bosch 12-Volt Max 4.0Ah High Capacity Battery – 3eddah.com