Explains how to factory reset JBL Charge 5. Factory resetting puts this Bluetooth speaker back into its default factory state. Plus, it deletes any earlier paired Bluetooth devices from memory. Thus, factory resetting stops the 5 from connecting to any nearby Bluetooth devices afterwards. Also, you should factory reset to get it ready for sale or re gifting.
How to Factory Reset JBL Charge 5: Step by Step
1. Turn on the JBL Charge 5
Press and release the Power button. It should light up solid white right away.

The green arrow points out the Power button in the last picture above.
Then, that button comes on, as shown next. Here, since we’ve paired the 5 with Bluetooth devices before this, it does not enter Bluetooth pairing mode by itself. We know that because the Bluetooth button remains OFF, rather than blinking white. Note the dark Bluetooth button, to the right of the glowing Power button in the next picture.

2. Wait for the Power Up Sound
The Charge 5 makes a rising electric guitar strum sound when it powers up. Then it is ready once this sound finishes.
3. Press the Volume UP and Play-Pause Buttons Together
See the next picture to find the UP Volume and Play-Pause buttons.

The 5 then enters factory reset, as shown in the next photo. Note that both the Power and Bluetooth buttons and the egg shaped ring around them. All of these light up for a couple seconds during reset. I.e. The ring and both buttons glow gray-white.

Then after a short pause, the JBL Charge 5 turns off. All lights go off, and it makes the power-down guitar sound.
The next picture shows the JBL Charge 5, powered down. All buttons are dark.

4. Check that your JBL Charge 5 Did Factory Reset
Next, power on the 5 again, as we did in step 1 above. In short, press and release the Power button.
Now this time, after factory reset, our speaker instantly comes up in Bluetooth discovery mode, as shown next. We did not need to press the Bluetooth button first. Note that the Bluetooth button blinks to let you know that the 5 has entered pairing mode. When this button blinks or is dark, the 5 is not currently in a pairing session. Indeed, we expect it not to pair to anything after a reset.

5. Done with How to Factory Reset JBL Charge 5 !
Factory reset is now complete. Thus you may now pack the 5 up for sale, or pair it again with your favorite BT devices.
Since, as noted earlier, the Charge 5 will no longer auto pair with any device after factory reset. So you must forget the previously paired JBL Charge 5 in the Bluetooth devices section of your source device. After that, then you may manually pair the 5 with that device again. Then, any time that both speaker and that device are in range, auto pairing should take place once more.