Galvanic cell connection lug, calvanic cell, battery and process for manufacturing the connetcion lug

The present invention relates to a galvanic cell connection lug (2) characterized in that it comprises a body made of aluminium or aluminium alloys and an electro-conductive metal coating on the surface of the body. Also disclosed is a galvanic cell (1) comprising said connection lug (2), a battery comprising at least one of said galvanic cells (1), as well as a process for manufacturing the said connection lug (2) characterized in that it comprises the following steps: a) degreasing; b) alkaline etching; c) acid etching; d) fluoride etching; g) repeating steps b) and c) at least once; h) zincate coating; i) electroplating a metal coating.