The invention relates to a working
machine (1) comprising a work attachment connection arrangement (3, 11a, 15a, 16a) configured to operationally connect to the working
machine (1) a work attachment (2) provided with a work tool (4), such as a sweeper / rotary
broom, a
snow blower or a bucket; and a
control system (10, 11) configured to control the operation of the working
machine (1) and to, when the work attachment (2) is connected to the working machine (1) via the work attachment connection arrangement (3), control the operation of the work attachment (2). The working machine (1) further comprises: at least a first
electric motor (5) configured for operation of the working machine (1); a first rechargeable battery (7) configured to supply the first
electric motor (5) with
electric power;an
electric power circuit (8) connecting the first
electric motor (5) and the first rechargeable battery (7), wherein the work attachment connection arrangement (3) comprises a first
electrical connector (15a) connected to the
electric power circuit (8) of the working machine (1), wherein the first electric connector (15a) is configured to be connected to a corresponding
electrical connector (15b) arranged on the work attachment (2), wherein the corresponding
electrical connector (15b) is connected to an auxiliary rechargeable battery (17) arranged on the work attachment (2), so as to allow electric connection of the auxiliary rechargeable battery (17) to the electric power circuit (8) of the working machine (1) when the work attachment (2) is connected to the working machine (1) via thework attachment connection arrangement (3). The invention also relates to a work attachment (2) of the above type and a combination of a working machine (1) and a work attachment (2) of the above types.