BATTERY APPARATUS

A battery apparatus (20; 100; 150; 160) includes a first battery module (45; 103) including a first battery stack (50; 105) having a plurality of first battery cells (52) stacked in a predetermined direction and a first heat exchanger (64; 110; 165) configured to exchange heat with the first battery stack (50; 105), a second battery module (80; 135) including a second battery stack (82; 137) having a plurality of second battery cells (52) stacked in the predetermined direction, and a heat conductive member (75) configured to be in contact with the first heat exchanger (64; 110; 165) and the second battery module (80; 135).