AKKU 30958: Battery for JBL Charge 2 Plus, Li-Po, 6000 mAh at reichelt elektronik
Battery for Speaker JBL Charge 2+ Plus, Li-Polymer 6000mAh 3.7V
Cameron Sino 6000mAh Battery MLP912995 2P for JBL Charge 2 Plus, Charge 2+, check the place of 2 red wires and 2 black wires|Digital Batteries| - AliExpress