How to Charge JBL Boombox 2

Front view of the JBL Boombox 2 speaker.

Here we explain how to charge the JBL Boombox 2 Bluetooth speaker. Do so by way of its hidden DC input port in the back of the unit, discussed below.

How to Charge JBL Boombox 2: Summary

In short, first, we suggest that you recharge the Boombox 2 with the included charger from JBL. Why? Because this charger meets the speaker’s electrical needs and is in fact, as checked by JBL. Indeed, JBL must feel that this is a well-matched charger since they include it with the speaker. So, we would not use any cheaper grade adapter here. But we admit that in a pinch, you could recharge the speaker with other non JBL wall chargers. But we won’t elaborate on those options here.

So it’s time to charge the Boombox 2 when the battery status meter shows a single blinking red light.

The blinking red light on the JBL Boombox 2 speaker.

When you see that red flash, connect the black barrel DC plug included with the speaker. Then, plug the adapter into a working wall outlet to recharge the JBL Boombox 2 to full.

Finally after six and a half hours, this speaker fully recharges. Then, you’ll be able to play it again for roughly 24 hours before you have to charge it again.

How to Charge JBL Boombox 2: Step-by-Step

1. For Best Results, Use the Power Adapter Provided

As we said above, we use the JBL wall charger AC adapter included with the speaker, as shown next.

The charger power adapter for the JBL Boombox 2.

2. Open the Port Cover on the Speaker

Find the connections port door on the back of the Boombox as shown next.

The closed port door on the back of the speaker.

Pry open the port cover, pulling the door out toward you and then down. This exposes the DC input charging port inside, as shown next.

The DC input port.

3. Plug in the DC Power Cord to Continue with How to Charge the JBL Boombox 2 Bluetooth Speaker

Then, plug the barrel male end of the charge cord into the DC in port on the speaker.

The charging cord plugged in.

4. Plug the AC Power Adapter into a Working Wall Outlet

Connect the charger to a working AC outlet.

The charging speaker, top view.

At least one of the battery status lamps lights up on the Boombox when you apply DC input power. There are five lamps on this speaker that light in succession as internal battery charging progresses.

5. Allow the Speaker to Charge Until All Battery Power Lights Go Out

Battery recharge is almost complete when all but the top of the battery gauge blinks.

This picture shows the gauge displaying fifty percent full charge.

The battery gauge showing 50 percent full, glowing white.

The battery charge cycle wraps up when the entire battery status gauge goes dark, as shown next.

The dark battery status gauge on the JBL Boombox 2 speaker.

6. Unplug the DC Charging Cable

7. Fully Close the Port Door

Make sure this power port opening flap shuts tightly. If it’s not, water could seep into the connector ports area. Then, this could damage the components inside the speaker. Thus take special care to properly seat the port door, to get full water resistance protection while not charging.

See how this port door looks when fully closed and sealed in the next picture.

The closed port door.

8. Done with How to Charge the JBL Boombox 2 !

We have now fully charged our boombox 2. Note that the battery charge meter just after turning on the speaker after a full recharge. The entire meter bar then lights. This means that the battery is now at full charge.

The battery gauge, showing full charge. The entire bar glows.

Repeat recharging every twenty-four hours of music play, to keep the battery in good shape. In fact, we charge ours any time the battery status gauge flashes red.