The invention relates to an electrochemical bundle comprising a plurality of stacks each including a first polarity electrode, a second polarity electrode, a first separator and a second separator. Each first polarity electrode comprises an electrical connection tab.
The electrochemical bundle comprises a first metallic separator interposed between each pair of adjacent electrical connection tabs. The first separator is attached to at least one of said electrical connection tabs.
The first separator extends, between each pair of adjacent electrical connection tabs, between a lower edge and an upper edge.
The upper edges of the first separator are substantially flush with the upper edges of the electrical connection tabs.