JBL Flip 4 Replacement Parts Board/Ports/Battery/Speaker/Grill/Cover/Radiator | eBay
PowerTrust 3200mAh Replacement battery for JBL Flip 4, Flip 4 bluetooth speaker GSP872693 01 with free tools|Digital Batteries| - AliExpress
Amazon.com: Pickle Power Replacement Battery for JBL Flip 4 and Flip 4 Special Edition Bluetooth Speaker, Fits JBL GSP872693 01 (3200mAh, 11.84Wh, 3.7V) : Electronics
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Estry Li-polymer Battery Replacement for JBL Flip 4 and Flip 4 Special Edition Portable Bluetooth Speaker, Battery Part No: GSP872693 01(3000mAh) - Newegg.com