Khron's Cave: #48 JBL Charge 3 Bluetooth speaker teardown
JBL Charge 2 Plus full disassembly - iFixit Repair Guide
Khron's Cave: #48 JBL Charge 3 Bluetooth speaker teardown
Amazon.com: Pickle Power Replacement Battery for JBL Charge 2+, Charge 2 Plus with DIY Repair Tools, 3.7V 6200mAh Battery Bluetooth Speaker Battery GSP1029102R : Electronics