An electric truck includes a battery pack assembly with a battery pack mounting structure and at least one battery pack. The battery pack includes a box shaped outer housing and a battery unit arranged inside and supported by the outer housing. The battery pack mounting structure for each battery pack includes a first and a second cantilever attached to a chassis of the electric truck, the first and second cantilever extending in transversal direction and being in the longitudinal direction spaced a distance apart from each other. Further, the battery pack is interconnected to the first and the second cantilever during operation in a floating manner allowing a torsional movement of the chassis around the longitudinal direction.