Bosch Home and Garden PBA Battery Pack, 18 V, 4.0 Ah, W-C, 18 V System, in Box, 1600A011T8 : Amazon.de: DIY & Tools
Bosch 18-Volt 4-Amp Brushless Cordless Variable Speed Orbital Sander with Dust Management (Battery Included) in the Power Sanders department at Lowes.com