I have found the answer. There are 2 different procedures, one is called CONDITIONING and the other is CALIBRATING. Conditioning of a brand new battery involves one cycle of 12 h uninterrupted charging followed by complete drainage of the battery until MacBook shuts down (repeat this 3 times). Calibrating can be done afterwards on old batteries and involves the usual instructions given by many websites (here, Lifewire, Apple, etc).
The instructions you have given to calibrate the new battery are different from the ones that came with it. How do I proceed?
Lorsqu'il en aura reçu, il pourra afficher un graphique de sa réputation au fil du temps.
Voici un aperçu de ce à quoi ressemble ce graphique :
Aucun point de réputation obtenu pour l'instant.