An agricultural baler (10) includes a flywheel (44), a driveline (50) associated with the flywheel (44) and couplable with a power take-off (PTO) of a traction unit, and a movable component (100) which is driven directly or indirectly by the driveline (50) and movable in a linear and/or rotational manner. The baler is characterized by an auxiliary power system (52) coupled with the movable component (100). The auxiliary power system (52) is configured for receiving power from the movable component (100) and storing the power.
