A lithium ion battery module, comprising: - a housing, wherein dimensions of the housing conform to overall dimensions for a standard lead acid battery as defined in one of Tables 1, 2, 3, 4, and 5 in the description; - a top compression plate; - a bottom compression plate; - a plurality of lithium ion battery cells arranged in a stack within the housing and between the top compression plate and the bottom compression plate; - a battery control assembly including a battery control module disposed within the housing on a side of the top compression plate opposite the plurality of lithium ion battery cells; and - a heat sink outer wall feature of the housing, wherein the heat sink outer wall feature substantially extends in at least one direction to an outermost dimension of the standard lead acid battery, wherein the heat sink outer wall feature of the housing includes a pair of side plates (60, 62) disposed on opposite sides of the plurality of battery cells, and wherein the lithium battery module further comprises: - at least two cell interconnect boards disposed opposite one another and proximate respective ends of the stack such that coupling of certain electrodes extending from the plurality of lithium ion battery cells is facilitated via the cell interconnect boards; and - end plates of the housing coupled to respective end portions (48, 50) of the heat sink outer wall feature such that the cell interconnect boards are positioned between the end plates and such that outer faces of the end plates are positioned apart by a distance substantially equal to an outermost length dimension of the standard lead acid battery. - a housing, wherein dimensions of the housing conform to overall dimensions for a standard lead acid battery as defined in one of Tables 1, 2, 3, 4, and 5 in the description; - a top compression plate; - a bottom compression plate; - a plurality of lithium ion battery cells arranged in a stack within the housing and between the top compression plate and the bottom compression plate; - a battery control assembly including a battery control module disposed within the housing on a side of the top compression plate opposite the plurality of lithium ion battery cells; and - a heat sink outer wall feature of the housing, wherein the heat sink outer wall feature substantially extends in at least one direction to an outermost dimension of the standard lead acid battery, wherein the heat sink outer wall feature of the housing includes a pair of side plates (60, 62) disposed on opposite sides of the plurality of battery cells, and wherein the lithium battery module further comprises: - at least two cell interconnect boards disposed opposite one another and proximate respective ends of the stack such that coupling of certain electrodes extending from the plurality of lithium ion battery cells is facilitated via the cell interconnect boards; and - end plates of the housing coupled to respective end portions (48, 50) of the heat sink outer wall feature such that the cell interconnect boards are positioned between the end plates and such that outer faces of the end plates are positioned apart by a distance substantially equal to an outermost length dimension of the standard lead acid battery. - at least two cell interconnect boards disposed opposite one another and proximate respective ends of the stack such that coupling of certain electrodes extending from the plurality of lithium ion battery cells is facilitated via the cell interconnect boards; and - end plates of the housing coupled to respective end portions (48, 50) of the heat sink outer wall feature such that the cell interconnect boards are positioned between the end plates and such that outer faces of the end plates are positioned apart by a distance substantially equal to an outermost length dimension of the standard lead acid battery.