BOSCH BES3 BATT ADAPTER BCH3121 BAD2

The battery is connected to your e-bike using the Bosch Battery Adapter
2 (BAD2). The adapter has two connection sockets, one for the battery
cable to the motor and a second for the charging socket cable. The Bosch
PowerTube 2-way adapter is already installed at the factory in many
Bosch e-bikes with the Smart System and PowerTube battery. However, the
Battery Adapter 2 can also be installed on e-bikes with a PowerPack
frame battery. Which battery connection you need depends on the position
of your charging socket. If it is integrated into the frame of your
e-bike, you need this 2-way adapter. If, however, the charging socket is
located directly on the battery mount, you need the Battery Adapter 1
(BAD1).