Battery pack and hand-held power tool

The present invention relates to a battery pack (10) having a housing (11) in which battery cells (12) are arranged and having electric contact elements (18) that are arranged on the housing (11). The battery pack also has a gas reservoir (15) and an output port (19) for gas that is connected to the gas reservoir (15) via a pressure line (16). Moreover, the invention relates to a hand-held power tool (30) having at least one electric consumer, having a cradle (31) for a battery pack (10), said cradle (31) comprising electric counter-contact elements (38) for the contact elements (18) of the battery pack (10), and said hand-held power tool having at least one device (35) that uses a gas that is under pressure. A connector (39) for an output port (19) of a gas reservoir (15) of the battery pack (10) is arranged on a cradle (31) of the hand-held power tool (30) for the battery pack (10), whereby said connector (39) is pneumatically connected to the device (35). In an associated hand-held power tool, a connector (39) for the output port (19) of the gas reservoir (15) of the battery pack (10) is arranged on a cradle (31) for the battery pack (10), whereby said connector (39) is pneumatically connected to the device (35).