Bosch 18-V Lithium Battery (4 Ah) in the Power Tool Batteries & Chargers department at Lowes.com
1600A002U5 Bosch | Bosch 1600A002U5 5Ah 18V Rechargeable Power Tool Battery, For Use With Cordless Drill / Drivers GSR 14.4 V-EC | 113-8656 | RS Components
Replacement 14.4V 18V Bosch Lithium Ion Rechargeable Battery 3ah 4ah 5ah 6ah for Power Tool Drill Set Bat607 Bat611 - China Bat607, Bat611 | Made-in-China.com
18V 5Ah Li-Ion Battery for Bosch BAT GBA GDR 2607336092 2607336236 BAT619 BAT609 | eBay
ProCORE18V 5.5Ah Battery Pack | Bosch Professional