TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Battery System: The first u-shaped bend forms a first bottom inside corner at a bottom of the first channel and where the first terminal in the first channel is metallurgically attached to the first segment at the first bottom inside corner by a resolidified pool of metal. The bimetallic busbar includes a surface treatment at least in the regions of the first and second bends, the treatment serving to reduce reflectivity of the bimetallic busbar, where the treatment comprises a coating of one or more of nickel and tin. The first segment is stamped and the second segment is extruded, where the first segment is made primarily of copper and the second segment is made primarily of aluminum. At least one of the first segment and second segment is extruded. The first segment is joined to the second segment by an ultrasonic weld. The first terminal is attached the first segment by a laser weld. The battery system further comprises a wiring clip attached to the first segment of the busbar where the wiring clip includes a wire joined to the wiring clip. The wiring clip is metallurgically attached to the first segment by a resolidified pool of metal, where the wiring clip is metallurgically attached to the first segment in the region of the first u-shaped bend by a resolidified pool of metal. The wiring clip includes one or more teeth and where the wiring clip is held in place against the first segment of the busbar at least in part by the one or more teeth biting into the busbar. The wiring clip has a u-shaped side profile or a w-shaped side profile. The wiring clip is designed with an interference fit and where the wiring clip is held in place against the first segment of the busbar at least in part by the interference fit. Preferred Method: In the method of manufacturing a battery, the busbar is attached to the battery cell terminal using laser welding and where the laser beam is directed primarily at the area of reduced reflectivity. The laser beam is directed at an angle substantially head-on to the end of the battery cell terminal. The laser beam moves in a direction of travel parallel to the channel, where the laser beam is directed at an angle slightly less than perpendicular to the direction of travel. The treatment comprises a coating of one or more of nickel and tin. The method further comprises forming the busbar by joining a first busbar segment to a second busbar segment, where the first segment is made of a first metal and the second segment is made of a second metal that is different from the first metal. The first busbar segment is ultrasonically welded to the second busbar segment prior to attaching the busbar to the terminal. The first segment is stamped and the second segment is extruded. The first segment is made primarily of copper and the second segment is made primarily of aluminum, where at least one of the first segment and second segment is extruded. The method further comprises securing a wiring clip to the busbar prior to attaching the busbar to the battery cell terminal. The wiring clip, the busbar and the battery cell terminal are attached together at the same time using laser welding. The method further comprises attaching a wire to the wiring clip prior to securing the wiring clip to the busbar. The wire is attached to the wiring clip using ultrasonic welding. Positioning the single battery terminal in the channel comprises the steps of attaching the battery cell to a heatsink; attaching a busbar support to the heatsink; and mounting the busbar to the busbar support. Positioning the single battery terminal in the channel comprises the steps of attaching the battery cell to a heatsink; attaching a busbar support to the heatsink; and mounting the busbar to the busbar support. The battery cell is a prismatic battery cell. Preferred Battery: The metallurgical junction is formed using laser welding and where the laser beam is directed primarily at the area of reduced reflectivity. The metallurgical junction is formed by a laser beam directed at an angle substantially head-on to the end of the battery cell terminal. The metallurgical junction is formed by a laser beam moved in a direction of travel parallel to the channel, where the laser beam is directed at an angle slightly less than perpendicular to the direction of travel. The treatment comprises a coating of one or more of nickel and tin. The busbar comprises a first busbar segment joined to a second busbar segment, where the first segment is made of a first metal and the second segment is made of a second metal that is different from the first metal. The first busbar segment is ultrasonically welded to the second busbar segment. The first segment is stamped and the second segment is extruded. The first segment is made primarily of copper and the second segment is made primarily of aluminum, where at least one of the first segment and second segment is extruded. The battery further comprises a wiring clip secured to the busbar, where the wiring clip, the busbar and the battery cell terminal are attached together at the same metallurgical junction. The battery further comprises a wire attached to the wiring clip, where the wire is ultrasonically welded to the wiring clip. The battery further comprises a busbar support attached to the heatsink where the busbar is mounted to the busbar support. The battery further comprises a busbar support attached to the heatsink where the busbar is mounted to the busbar support.