I have successfully replaced battery without removing the speaker cables, as proposed by the comments in the next steps.
Furthermore, in the steps after 22, where the battery is removed from the upper case, I have easily performed with a credit card and a drop of rubbing alcohol on it and finished in several minutes. Try it!
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.