Abstract: A secondary battery includes a battery cell and a cell holder having an opening with a width varying along a first direction which extends along a lengthwise axis of the battery cell in the cell holder.

Abstract: A secondary battery includes a battery cell and a cell holder having an opening with a width varying along a first direction which extends along a lengthwise axis of the battery cell in the cell holder.

Abstract: A secondary battery is disclosed. In one aspect, the battery includes a plurality of battery cells and a protective circuit module placed at a first side of the battery cells and configured to control a charging/discharging operation. The battery also includes a connection tab electrically connecting the battery cells and the protective circuit module and an external terminal in electrical connection with the protective circuit module. The connection tab and the external terminal extend substantially parallel to each other along a longitudinal direction of the secondary battery and are placed at different levels in a first direction different from the longitudinal direction.

Abstract: A battery pack includes conductive tab coupled to the at least one battery cell. The conductive tab has a contact area coupled to a terminal region of the at least one battery cell. The contact area is greater than an area of the terminal region, to support, for example, higher currents and/or over-current conditions. Also, the conductive tab may be secured to the at least one battery cell without the use of specially designed jigs.