Most Bluetooth speakers, including the JBL Charge 3, offer off-grid operation via an internal battery. And when that portable power goes dead, you can recharge it via an AC or car adapter. To facilitate recharging this speaker, you can use a USB 2 charger that delivers 5 volts at 2.3 amps. Sometimes though, the JBL … Continue reading JBL Charge 3 Not Charging