Battery pack for a portable handset comprises two casing parts secured together and enclosing cell pack so as to be held firmly

摘要

A battery pack for a portable handset comprises two casing parts 10, 12 ultrasonically welded together and enclosing a cell pack 14, and the internal surface of one casing part 10 is integrally moulded with an array of projecting pips 18 which, on assembly of the pack are partially crushed to take up dimensional tolerances between the casing parts 10, 12 and the cell pack 14. This retains the cell pack 14 firmly in position between the casing parts 10, 12.