Do JBL Charge 3 and Flip 4 have battery issues? I've read a lot of reviews saying it keeps disconnecting or stops charging after a few months or a year. - Quora
How to connect JBL speakers together - Android Authority
Solution: JBL Pulse 2 bluetooth disconnecting or pairing problems resolved by a firmware upgrade - update | GetGui.com
JBL Link Music | Wi-Fi speaker
How to Connect JBL Headphones and/or Speakers to TV? | Avantree
JBL Charge 5 Buttons Explained (Plus Special Button Combos)