NOVELTY - A coupler system (100) configured to couple to electrical terminals of a battery, comprises: a coupler bridge (110) comprising: a first section comprising: a first height; and a first edge; a second section adjacent to the first section and opposite the first edge; a first coupler coupled to the second section of the coupler bridge; and a second coupler coupled to the second section of the coupler bridge.    USE - The coupler system, method and battery connector mechanism are useful for coupling electrical terminals of a battery; and for manufacturing an electrical connector for a target terminal range of a battery (all claimed).    ADVANTAGE - The coupler system restricts a battery from being coupled to an electrical device when the polarities of the respective power terminals of the battery and the electrical device are not properly aligned.    DETAILED DESCRIPTION - A coupler system configured to couple to electrical terminals of a battery, comprises: a coupler bridge comprising: a first section comprising: a first height; and a first edge; a second section adjacent to the first section and opposite the first edge; a first coupler coupled to the second section of the coupler bridge; and a second coupler coupled to the second section of the coupler bridge; where the first section is configured to restrict the first and second couplers from being electrically coupled to the electrical terminals of the battery when the first edge faces towards the battery. INDEPENDENT CLAIMS are:    (1) a method of manufacturing an electrical connector for a target terminal range of a battery, comprising: forming a connector body comprising a first segment and a second segment substantially parallel to the first segment along a length of the connector body; coupling a first interface to the second segment of the connector body; and coupling a second interface to the second segment of the connector body, where the first segment restricts the first and second interfaces from electrically coupling to the battery when the first segment faces towards the battery; and    (2) a battery connector mechanism for coupling with electrical terminals of a battery, comprises: a structure comprising: a first section comprising a first border along a first dimension of the structure; a second section adjacent to the first section and opposite the first border along the first dimension of the structure; a first connector coupled to a first portion of the second section of the structure; and a second connector coupled to a second portion of the second section of the structure; where the second section is configured to align the first and second connectors in an unconnectable position relative to the electrical terminals of the battery when the first border contacts the battery.    DESCRIPTION OF DRAWING(S) - The drawing shows a front view of a coupler bridge of a coupler system.    Coupler system (100)    Coupler bridge (110)    Sections (111, 112)    Height (1111, 1121)    Edge (1112, 1122)    Couplers (1123, 1124)    Insulation shells (1125, 1126)