I couldn't find the battery specification anywhere in the Internet, so I removed it, easily following the well presented instructions above. The battery has two cells. The label on each cell says Greatpower, model no. GSP0931134, 7.4 volts, 5000 mah, 37Wh, made in China. Overall dimensions are 145mm x 32mm x 19mm (145mm includes a small electronic board where cables from the board connect to the plug.) After an Amazon and Google search, I'm no closer to a replacement. At least the reassembled Xtreme works without a battery with external power. JBL is of no help, either. I'll be looking model airplane stores, as they have every LiPo battery imaginable. In summary, the JBL Xtreme is a short lived unsupported product.
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.