Back view of the Ultimate Ears Wonderboom 2 speaker, showing the charging cord connected.

Ultimate Ears Wonderboom 2 Charging Instructions

Here’s our Ultimate Ears Wonderboom 2 charging instructions for this portable Bluetooth speaker.  Charging is easy through the sealed micro USB DC in port on the rear bottom of the UEWB2.  First, pick a high current USB AC adapter. Why? Because Ultimate Ears does not include this with the Wonderboom 2.  But they do offer one that works well for less than twenty US dollars.

Next, connect a micro USB charge cord between the speaker and that adapter. Then, plug that power supply into a working AC mains outlet.





Finally after roughly three hours, the speaker fully recharges.  Then, you can play it again for around thirteen hours before it runs dead again.

Ultimate Ears Wonderboom 2 Charging Instructions

1. Choose Strong Enough USB Charger

In this demo, we’re using the iClever 24 watt AC  USB charger, as shown next.  The Ultimate Ears Wonderboom 2 needs 5 volts at about 1.0 amp to charge fully in the shortest time.  So this iClever USB wall adapter is indeed strong enough for the job.

Picture of the iClever IC-TC02 Two Port USB Wall Charger, showing the label side view.
iClever IC-TC02 Two Port USB Wall Charger, showing the label side view.

2. Open the Power Port Cover Door on the Speaker

Back view of the Ultimate Ears Wonderboom 2 speaker with its closed port door highlighted.
Back view of the Ultimate Ears Wonderboom 2 speaker with its closed port door highlighted.

Use a dime or penny to open the waterproof seal port cover on the speaker. This uncovers the micro USB charging port inside, as shown next.

Back of the Ultimate Ears Wonderboom 2 speaker, showing its micro USB charge port highlighted.
Back of the Ultimate Ears Wonderboom 2 speaker, showing its micro USB charge port highlighted.

3. Power Off the Speaker, to Continue with Ultimate Ears Wonderboom 2 Charging Instructions

Note that the speaker still charges when running.  But depending on your charger, it may recharge a little faster when turned OFF.

Top view of the Ultimate Ears Wonderboom 2 speaker, powered ON, with its -Power-button lit and highlighted.
Top view of the Ultimate Ears Wonderboom 2 speaker, powered ON, with its -Power-button lit and highlighted.

4. Plug in the Micro USB Cord

Then, plug the small end of your micro USB charge cable into the matching micro USB port, as shown next.

Back view of the Ultimate Ears Wonderboom 2 speaker, showing the charging cord connected.
Back view of the Ultimate Ears Wonderboom 2 speaker, showing the charging cord connected.

5. Plug the Other End of the USB Cord into the AC Adapter

Next, connect the A end of the USB charge cable to the power adapter.  In this demo, as we said earlier, we use an iClever 24 Watt 2.1 amp per port USB power adapter along with a generic micro USB cable.





6. Plug the AC USB Power Adapter into a Wall Outlet to Continue with Ultimate Ears Wonderboom 2 Charging Instructions

Now that we connected the speaker and charger, we plug the charger into a working AC outlet.

The status light in the power button lights a fading and brightening white pattern on this BT speaker with enough USB power. While no battery status gauge shows charge percentage, the pulsating white lamp means that charging is happening.

Then when the speaker is OFF, this lamp goes out when charging finishes  If the speaker is ON, this lamp starts glowing a solid white once more.

7. Let the Ultimate Ears Wonderboom 2 Charge Until the the Power Lamp Stops Pulsating

Battery charging is finished when the gradually brightening and fading power lamp stops pulsating.  Detail: when the speaker is OFF, this lamp goes out when charging finishes  But if the speaker is ON, the light starts glowing a solid white once more.

8. Unplug the USB Cord

9. Close the USB Port Door

Note that unless you snap this door tightly into place, water might get inside, and water could damage speaker electronics in there. So, be sure to press door closed with enough pressure to fully seat it, to ensure full water resistance.  See the correctly closed port door in the next picture.

Back view of the Ultimate Ears Wonderboom 2 speaker with its closed port door highlighted.

10. Done with Ultimate Ears Wonderboom 2 Charging Instructions!

We have now fully charged our Ultimate Ears Wonderboom 2 wireless Bluetooth speaker.

Repeat this routine every ten hours of music play, to keep its battery in top shape for months to come.

Front view of the Ultimate Ears Wonderboom 2 speaker.
Front view of the Ultimate Ears Wonderboom 2 speaker.




Other Posts About the Ultimate Ears Wonderboom 2 Speaker

  1. Ultimate Ears Wonderboom 2 Charge Time
  2. Ultimate Ears Wonderboom 2 Setup Instructions
  3. How to Check Battery on Ultimate Ears Wonderboom 2
  4. Ultimate Ears Wonderboom 2 Pairing Instructions

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References for Ultimate Ears Wonderboom 2 Charging Instructions

  1. Ultimate Ears Wonderboom 2 Official Product Page at UltimateEars.com

Revision History

  • 2020-06-11: First published.
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