A battery pack, comprising: a casing comprising a support beam ; and a battery module housed in the casing ; the battery module comprising: a plurality of batteries arranged along a length direction (L); and an end plate located at an end of the plurality of batteries in the length direction (L); the end plate comprising: a main body portion ; and a lug integrally formed with the main body portion , the lug protruding outwardly from the main body portion along the length direction (L), abutting against the support beam from above, and fixedly connected to the support beam of the casing ; the lug is provided with a first mounting hole (H1) penetrating in a height direction (H), and the support beam is provided with a second mounting hole (H2) corresponding to the first mounting hole (H1) on the lug and penetrating the support beam in the height direction (H); a fastener is provided to pass through the first mounting hole (H1) and the second mounting hole (H2) to fix the lug and the support beam to each other; and the battery pack being characterised in that a highest point in the height direction (H) of the fastener is lower than an upper surface of the battery module , and a lowest point in the height direction (H) of the fastener is higher than a lower surface of the battery module . a casing comprising a support beam ; and a battery module housed in the casing ; the battery module comprising: a plurality of batteries arranged along a length direction (L); and an end plate located at an end of the plurality of batteries in the length direction (L); the end plate comprising: a main body portion ; and a lug integrally formed with the main body portion , the lug protruding outwardly from the main body portion along the length direction (L), abutting against the support beam from above, and fixedly connected to the support beam of the casing ; the lug is provided with a first mounting hole (H1) penetrating in a height direction (H), and the support beam is provided with a second mounting hole (H2) corresponding to the first mounting hole (H1) on the lug and penetrating the support beam in the height direction (H); a fastener is provided to pass through the first mounting hole (H1) and the second mounting hole (H2) to fix the lug and the support beam to each other; and the battery pack being characterised in that a highest point in the height direction (H) of the fastener is lower than an upper surface of the battery module , and a lowest point in the height direction (H) of the fastener is higher than a lower surface of the battery module . a plurality of batteries arranged along a length direction (L); and an end plate located at an end of the plurality of batteries in the length direction (L); the end plate comprising: a main body portion ; and a lug integrally formed with the main body portion , the lug protruding outwardly from the main body portion along the length direction (L), abutting against the support beam from above, and fixedly connected to a main body portion ; and a lug integrally formed with the main body portion , the lug protruding outwardly from the main body portion along the length direction (L), abutting against the support beam from above, and fixedly connected to the support beam of the casing ; <EOS>