industrial truck 1 is not activated that is to say the hook is pivoted downwardly the battery block 2 can be shifted forward relative to the industrial truck 1 starting from the illustrated operating position that is to say in the direction of the holding apparatus 3 the holding apparatus 3 has a roller path 10 and a stop 11 for the battery block 2 a means 12 for locking the battery block 2 on the holding apparatus 3 can be operated by means of a control element 13 furthermore a control element 14 is provided on the holding apparatus 3 for activation of the means 7 for locking the battery block 2 on the industrial truck 1 this control element 14 can be used to move two sliding rails 15 upwardly and downwardly the means 7 for locking the battery block 2 on the industrial truck 1 can thus be activated or deactivated when the industrial truck 1 has been moved at least partially over the holding apparatus 3 fig2 shows details of the means 7 for locking the battery block 2 on the industrial truck 1 when the battery block 2 is in the illustrated vertical position it is located within the battery compartment on the frame 4 of the industrial truck 1 this corresponds to the position of the battery block 2 during operation of the industrial truck 1 the means 7 for locking the battery block 2 on the industrial truck 1 has a hook 8 which is mounted on the frame 4 such that it can pivot about the shaft 9 a pin 20 which is attached to the frame 4 is.