HQRP 5000mAh Battery for JBL Xtreme GSP0931134 Wireless Portable Bluetooth Speaker JBLXTREME - Walmart.com
Amazon.com: WirelessFinest High Capacity Replacement Battery + Tool for JBL Flip 4 Speaker or Special Edition Model GSP872693 Li-Polymer 3.70V 3000mAh/11.10Wh Repair Power : Electronics
JBL - Xtreme Battery Replacement
JBL Xtreme Green Cell Rechargeable Battery - 5000mAh