You charge JBL Xtreme 2 conveniently via the hidden DC input barrel connector style charge ports. And to get the shortest charge time and fullest charge when the JBL Xtreme 2 goes dead, be sure to use a high power USB power adapter. JBL Xtreme 2 Charge Time: How Long to Fully Recharge According to … Continue reading JBL Xtreme 2 Charge Time