NOVELTY - A battery module system comprises multiple battery modules (10) in electrical connection, each battery module comprising a male connector and a female connector. The female connector of the each battery module is in electrical engagement into the male connector of an adjacent battery module. The female connector comprises a conductive female terminal (10) having a female insulating housing (9), and the male connector comprises a conductive male terminal (5) and an insulating male shield positioned overlying the conductive male terminal.    USE - For series connection high current and voltage applications, and for use in battery pack system, particularly Hybrid Electrical Vehicle (HEV) battery packs.    ADVANTAGE - The system eliminates the incidence of high voltage electrocution, and has increased reliability and serviceability.    DETAILED DESCRIPTION - A battery module system comprises multiple battery modules in electrical connection, each battery module comprising a male connector and a female connector. The female connector of the each battery module is in electrical engagement into the male connector of an adjacent battery module. The female connector comprises a conductive female terminal having a female insulating housing configured to protect an outer surface of the conductive female terminal while providing an opening to an inner surface of the conductive female terminal. The male connector comprises a conductive male terminal and an insulating male shield positioned overlying the conductive male terminal. The conductive male terminal comprises a blade portion (6) for insertion through the opening in the female insulating housing into electrical engagement with the inner surface of the conductive female terminal of the adjacent battery module, where a portion of the insulating male shield overlying the blade portion of the conductive male terminal is positioned over the female insulating housing when the blade portion is in electrical engagement with the inner surface of the conductive female terminal. The conductive female terminal and conductive male terminal are mechanically attached to first sidewall and second sidewall of each battery module, by welds, glue, or bolt/nut arrangements. INDEPENDENT CLAIMS are also included for:    (1) using the battery module system, where a handling cap is positioned on the male terminal of the first battery module in a sequence prior to engagement with the adjacent battery module, the adjacent battery module comprising a protective enclosure protecting handlers from contacting to the female terminal; and    (2) battery pack system comprising first battery packs in electrical connection, each battery pack comprising multiple battery modules in electrical connection, where electrical communication between the initial battery module, the final battery module, and each battery module in the intermediate battery modules is provided by at least one buss bar; and at least one protective cap covering the male terminal, the female terminal, and the buss bar, where at least a portion of the protective cover covering the male terminal and the female terminal allows for insertion of the female terminal of the final battery module in the first battery pack into the male terminal of an initial battery module in the adjacent battery pack of the first battery packs.    DESCRIPTION OF DRAWING(S) - The figure shows a battery module having male and female terminals positioned along opposing sidewalls of the battery module.    Conductive male terminal (5)    Blade portion (6)    Male insulating housing (8)    Female insulating housing (9)    Conductive female terminal (10)    Slot portion (11)    Battery module sidewall (19)    Battery modules (20)