Patent ID: 7968228

Claim:
A secondary battery comprising: an electrode assembly comprising a positive electrode plate, a negative electrode plate and a separator wound together; a can housing the electrode assembly and having an opening for receiving the electrode assembly, the can being coupled to the positive electrode plate; a cap assembly sealing the opening of the can, the cap assembly comprising: a cap plate having an exterior facing surface and an electrolyte injection hole, and a lead plate attached to the exterior-facing surface proximate to the electrolyte injection hole, the lead plate having at least one side wall; and a protection circuit board having a pair of battery terminals, one of the pair of battery terminals being electrically coupled to the can by the lead plate and the other of the pair of battery terminals being electrically coupled to the negative electrode, and at least one positioning member on and protruding from the cap plate having a wall abutting the at least one side wall of the lead plate to substantially prevent lateral movement of the lead plate relative to the cap plate.