Electrical connection terminal for electric power storage cell

A cell for the storage of electrical energy that includes several electrochemical elements connected in series and/or in parallel and placed inside a sealing envelope and electrical link means for electrically linking said electrochemical elements inside the envelope, where said envelope includes electrical connecting means for electrically connecting the electrochemical elements to a power connecting device outside of the envelope, said electrical connecting means including two electrical link terminals placed in two passages passing through the envelope, wherein the electrical connecting means include means that pass through said envelope without affecting sealing of the envelope and without transmitting thereto support stresses, the sealing envelope being flexible and including a metal layer forming a waterproof barrier, wherein the electrical link means include two connecting plates respectively associated with the electrical link terminals, said terminals, each including an electrical link stud and a pin, where each pin together with means to prevent rotation of the pin, is used to secure one of the two connecting plates respectively to the two electrical link studs by means of clamping means, where said clamping means also effects the sealing by clamping two sealing rings, each inserted between a shoulder on a stud and the sealing envelope.