Front view of the JBL Boombox BT speaker, showing the battery level gauge, which is reading full charge in this picture.
Follow these JBL Boombox charging instructions for convenient recharging of this Bluetooth speaker via its hidden DC input charging port in the back of the unit, discussed below.
In short, first, we suggest that you recharge the Boombox with the included JBL charger. Why? Because this charger meets the speaker’s electrical needs and is in fact, provided 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 charger here. But we admit that in a pinch, you could fully charge the speaker with other non JBL wall chargers. But we won’t explore those options here.
It’s time to recharge the Boombox when the battery status gauge shows a single flashing red light.
When you see the blinking red lamp, connect the black barrel DC output jack included with the speaker between the speaker and that power adapter. Then, plug the adapter into a working wall outlet to recharge the JBL Boombox to full.
Finally after six and a half hours, your JBL Boombox fully recharges. Then, you’ll be able to play it again for roughly 24 hours before you have to charge it again.
As mentioned above, we’re using the JBL wall charger AC adapter included with the JBL Boombox, as shown next.
Find the connections port door on the back of the speaker as shown next.
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.
Then, plug the barrel male end of the wall adapter’s charge cord into the matching DC input port on the speaker, as shown next.
Now that the Boombox and the JBL AC adapter are connected, we plug the charger into a functioning AC outlet, as shown next.
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.
Battery charging is almost complete when all but the last of the battery status lights light solid. The last one continues to blink for several minutes more to top off the charge, as shown next.
The battery recharge cycle finishes when all battery status gauge lights go out, as shown next.
Note that unless this power port opening flap is tightly closed, water could enter the input and output connector ports area, and likely damage the speaker inside. So, take special care to correctly 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.
We have now fully charged our Bluetooth speaker. Note that the battery charge status gauge just after turning on the Boombox after a full recharge. All lamps are aglow, meaning that the battery is now in full charge state, as shown in the next picture.
Repeat recharging every twenty-four hours of music play, to keep the battery in good condition. We charge ours when the battery status gauge lights show just one lamp glowing.
An aging internal battery may cause this, as the battery can no longer deliver the minimum current the Boombox needs to work properly. So installing a new battery often solves this issue. We suggest though, that you consult a qualified electronics technician to replace the battery.
The Boombox speaker fully charges between six and seven hours, depending on the state of the battery when recharging starts. This assumes that you use the charger that comes with the speaker. Other wall chargers may take longer to fully recharge this unit.
No you cannot, and further, such attempts could damage the speaker.
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