Follow these tips for solving JBL Charge 4 charging problems. This explains how to best recharge the JBL Charge 4 via its USB-C port. JBL Charge 4 Charging Solving Problems: First Remarks First, we suggest that you recharge the JBL Charge 4 with a full power USB 2.0 charger such as the JBL USB … Continue reading JBL Charge 4 Charging Solving Problems