6000mAh 3.7v Battery bateria GSP1029102A for JBL Charge 3 (pls double check the place of 2 red wires on your old battery)|Digital Batteries| - AliExpress
Buy MPF Products 7800mAh SUN-INTE-118, 1INR19/66-3, ID998 Battery Replacement Compatible with JBL Charge 4 Portable Bluetooth Speaker Online in Taiwan. B07ZTVJ3GW