It offers a high charging speed for all 12-volt batteries and charges, for example, a battery with 12 volts / 3.0 Ah from 0% to 80% in only 36 minutes. It also features a modern and compact design and requires little space on the wall. It is compatible with all Bosch Professional 12V batteries (Professional 12V System). Furthermore the GAL 12V-40 Professional can also be installed by wall mounting.