How To Fix A Jbl Speaker That Won T Charge. As far as the JBL 4 so many people have raised the question of getting adequate tips that can help in improving the sound louder of these speakers. Daniel on May 01 2020.
A software fix may be all you need to get your speaker charging again. Turn the speaker on by pressing the power button. I was having the same problem but i found it.
Link JBL on Youtube.
Connecting JBL Speaker To ComputerLaptop With AUX. So now most questions are raised for the JBL Charge 4. If the charging voltage is not mentioned then the default voltage is 5V most probably you have also got a USB cable so that means it needs 5V to charge. I puted it in microwave for 2 sec and bluetooth isnt showing up.

