Bosch 36V 6.0AH/8.0Ah Li-ion Replacement Battery for Bosch D-70771 2607336003 2607336108 BAT838 BAT810 BAT840 Power Tool Battery - AliExpress
Bosch 36-volt 1/2-in Keyless Cordless Drill (2-Batteries Included 4 Ah Li-ion Batteries, Charger Included and Soft Bag included) in the Drills department at Lowes.com