A materials handling vehicle comprising a materials handling mechanism , a drive mechanism , a battery receiving space , and a removable battery assembly , wherein: the materials handling mechanism is configured to engage goods in a warehouse environment and cooperates with the drive mechanism , under power from the removable battery assembly , to move goods along an inventory transit surface in the warehouse environment; the removable battery assembly and the battery receiving space cooperate to define a battery insertion and removal axis along which the removable battery assembly is inserted into and removed from the battery receiving space ; and the removable battery assembly comprises lateral battery faces , each comprising a longitudinal guide structure that is oriented along the battery insertion and removal axis ; characterized in that : the battery receiving space comprises opposing guide blocks , each arranged on opposite sides of the battery receiving space , and each comprising a securement portion and a replaceable portion ; the replaceable portion of each guide block comprises a friction-inducing surface and a guiding surface ; each friction-inducing surface extends along the battery insertion and removal axis , parallel to and facing an opposing one of the lateral battery faces , with the removable battery assembly seated in the battery receiving space ; and each guiding surface extends along the battery insertion and removal axis , perpendicular to the lateral battery faces and facing an opposing surface of the longitudinal guide structure , with the removable battery assembly seated in the battery receiving space . the materials handling mechanism is configured to engage goods in a warehouse environment and cooperates with the drive mechanism , under power from the removable battery assembly , to move goods along an inventory transit surface in the warehouse environment; the removable battery assembly and the battery receiving space cooperate to define a battery insertion and removal axis along which the removable battery assembly is inserted into and removed from the battery receiving space ; and the removable battery assembly comprises lateral battery faces , each comprising a longitudinal guide structure that is oriented along the battery insertion and removal axis ; characterized in that : the battery receiving space comprises opposing guide blocks , each arranged on opposite sides of the battery receiving space , and each comprising a securement portion and a replaceable portion ; the replaceable portion of each guide block comprises a friction-inducing surface and a guiding surface ; each friction-inducing surface extends along the battery insertion and removal axis , parallel to and facing an opposing one of the lateral battery faces , with the removable battery assembly seated in the battery receiving space ; and each guiding surface extends along the battery insertion and removal axis , perpendicular to the lateral battery faces and facing an opposing surface of the longitudinal guide structure , with the removable battery assembly seated in the battery receiving space . the battery receiving space comprises opposing guide blocks , each arranged on opposite sides of the battery receiving space , and each comprising a securement portion and a replaceable portion ; the replaceable portion of each guide block comprises a friction-inducing surface and a guiding surface ; each friction-inducing surface extends along the battery insertion and removal axis , parallel to and facing an opposing one of the lateral battery faces , with the removable battery assembly seated in the battery receiving space ; and each guiding surface extends along the battery insertion and removal axis , perpendicular to the lateral battery faces and facing an opposing surface of the longitudinal guide structure , with the removable battery assembly seated in the battery receiving space . <EOS>