JBL PartyBox 100 mod to extend battery life with an external power bank : r/ JBL
JBL Charge 3 Bluetooth Speaker Review - Legit Reviews
JBL Charge 4 - Portable Bluetooth Speaker with built-in powerbank
JBL Charge 4 - Portable Bluetooth Speaker with built-in powerbank
JBL Flip 4 Bluetooth speaker Review - Controls, Sound Quality, Battery Life and Conclusion - PhoneArena
jbl charge 4) the speaker doesn't make any sound not even the little on/off chime. i tried connecting via aux and it still didn't work. also, the battery life indicator is on
JBL Flip 6 review: The best BANG for your buck small Bluetooth speaker