A clamp for a male terminal having features for preventing incorrect clamping, which comprises a main body having a ring and two jaws, that are movable toward each other for the ring to hold the terminal. An engagement element is movable in the vertical direction and to act upon the jaws to move them toward each other. A clamping member, operable to move the engagement element comprises a stem and a nut. The stem is fixed to a base body, which is pivotable relative to the main body between a first position, in which the stem is inclined with respect to the vertical and a second position, in which the stem extends in the vertical direction. In the first position, the engagement element prevents the nut from engaging a threaded portion of the stem. In the second position, the threaded portion is adapted to be engaged by the nut.

A connector assembly for electrically connecting poles of two adjacent battery cell. The connector assembly comprises an electrically conductive bus bar having a first connection area and a second connection area distal from each other, electrically conductive pole-mating components having a pole-mating face and a bar-mating face, and fastening components for attaching the electrically conductive bus bar and one of the pole-mating components to one of the poles of the two adjacent battery cells. The pole-mating faces of the pole-mating components are adapted for mating the poles the battery cells. The bar-mating faces of the pole-mating components are adapted for mating with the connection areas. The bar-mating faces and the connection areas have complementary concave/convex arched shape for optimizing contact surface over a range of relative positioning of the two adjacent battery cells.

An electric connection plug (5, 5′, 5″) for an electric cable (3) for use with an electric terminal (20, 21, 20′, 21′) of a battery module (2, 2′). The plug includes a conductive fitting (51, 51′, 51″) engaged with a rotatable wheel (56, 56′, 56″) for selectively rotating the fitting to threadingly mechanically and electrically connect to plug to the battery terminal. The cable mechanically and electrically connects to the plug allowing rotation of the wheel and fitting without rotation of the cable while threadingly engaging and disengaging the plug to the battery terminal.

A connector for terminating to a battery terminal post. The connector includes a post-engaging portion which has an opening for receiving the battery terminal post therein. The post-engaging portion is movable between an open position and a secured position. A retention insert is provided in the opening of the post-engaging portion. The insert has resiliently deformable projections which extend into the opening. With the battery terminal post inserted into the opening and the post-engaging portion moved to the secured position, the resiliently deformable projections of the insert engage and retain the battery terminal post in the opening to prevent unwanted movement of the connector relative to the battery terminal post.

A connector for terminating to a battery terminal post. The connector includes a post-engaging portion which has an opening for receiving the battery terminal post therein. The post-engaging portion is movable between an open position and a secured position. A retention insert is provided in the opening of the post-engaging portion. The insert has resiliently deformable projections which extend into the opening. With the battery terminal post inserted into the opening and the post-engaging portion moved to the secured position, the resiliently deformable projections of the insert engage and retain the battery terminal post in the opening to prevent unwanted movement of the connector relative to the battery terminal post.

An electric connection plug (5, 5, 5) for an electric cable (3) for use with an electric terminal (20, 21, 20, 21) of a battery module (2, 2). The plug includes a conductive fitting (51, 51, 51) engaged with a rotatable wheel (56, 56, 56) for selectively rotating the fitting to threadingly mechanically and electrically connect to plug to the battery terminal. The cable mechanically and electrically connects to the plug allowing rotation of the wheel and fitting without rotation of the cable while threadingly engaging and disengaging the plug to the battery terminal.

A battery post terminal assembly includes a battery post terminal including a grasping portion capable of grasping a battery post on an inner side, and a fastening portion placed in a form of a pair to extend from end portions of the grasping portion, a holder placed on one side of the fastening portion, and a base member placed on an opposite side to the holder with the fastening portion between the holder and the base member. The base member has a base seat portion, a screw shaft that is provided on one surface of the base seat portion to be coupled to the holder, and a projection portion that is provided on a surface having the screw shaft of the base seat portion, and to project to an inner side of the fastening portion when coupled to the holder.

A battery terminal connector for terminating to a battery post of a battery. The battery terminal connector includes a cable attachment portion, a flange portion having a tightening member provided thereon, and a post engaging portion. A guard member is mounted on the flange portion. The guard member is moveable between a first position and a second position. The guard member has a projection which extends over the tightening member when the guard member is in the first position. The projection is removed from the tightening member when the battery terminal connector is properly positioned relative to the battery post and the guard member is in the second position. The battery terminal connector can only be terminated to the battery post when the battery terminal connector is properly positioned relative to the battery post.

A connector assembly for electrically connecting poles of two adjacent battery cell. The connector assembly comprises an electrically conductive bus bar having a first connection area and a second connection area distal from each other, electrically conductive pole-mating components having a pole-mating face and a bar-mating face, and fastening components for attaching the electrically conductive bus bar and one of the pole-mating components to one of the poles of the two adjacent battery cells. The pole-mating faces of the pole-mating components are adapted for mating the poles the battery cells. The bar-mating faces of the pole-mating components are adapted for mating with the connection areas. The bar-mating faces and the connection areas have complementary concave/convex arched shape for optimizing contact surface over a range of relative positioning of the two adjacent battery cells.

A clamp for a male terminal having features for preventing incorrect clamping, which comprises a main body having a ring and two jaws, that are movable toward each other for the ring to hold the terminal. An engagement element is movable in the vertical direction and to act upon the jaws to move them toward each other. A clamping member, operable to move the engagement element comprises a stem and a nut. The stem is fixed to a base body, which is pivotable relative to the main body between a first position, in which the stem is inclined with respect to the vertical and a second position, in which the stem extends in the vertical direction. In the first position, the engagement element prevents the nut from engaging a threaded portion of the stem. In the second position, the threaded portion is adapted to be engaged by the nut.