A lithium-ion battery module (22) includes a housing (26) having a plurality of partitions (28) configured to define a plurality of compartments (29) within the housing. The battery module also includes a lithium-ion cell element (24) provided in each of the compartments (29) of the housing (26). The battery module further includes a cover (30) coupled to the housing (26) and configured to route an electrolyte into each of the compartments (29). The cover (30) is also configured to seal the compartments (29) of the housing (26) from each other. Each lithium-ion cell element may be positioned in a metal pouch open on its top side so as to receive the electrolyte routed into the corresponding compartment.