Top view of the Wonderboom 2 Bluetooth speaker. showing the dark Power button, highlighted.

How to Tell if Wonderboom 2 is Charging

How to tell if your Wonderboom 2 is charging?  This wireless BT speaker with built in hanger loop has a two-color LED lamp on its top, in the Power button, as shown in the pictures next.  This light not only gives speaker power OFF ON status. But it also tells battery level (whether it’s near dead or not) as well as charging status.  To see if the Wonderboom 2 is charging,  check this light.  We show how to read it next.





How to Tell if Wonderboom 2 is Charging

Connect your Speaker to Power

Of course, you know that this speaker is NOT charging with no charging cable plugged into it.

Check the  Status / Power LED on Top of the Speaker

Whether this unit is OFF or ON, you can tell if the Wonderboom 2 is charging if it is indeed connected to a charger, the Power lamp is lit white, and slowly brightening and dimming in a pulsating pattern.

When not charging, this light glows steady  red when the battery has about run entirely out of power.  It glows solid white otherwise when the speaker is powered ON.  The lamp is OFF when the speaker is OFF and not connected to a charger supply.

Should the Wonderboom 2 power lamp glow steady  red with the power ON, then the speaker is not charging.  So you might check that your USB cable, adapter charger, and power source are working.  Try a fresh USB adapter or another charging cable.  This light should blink white to know for sure that the unit is charging.

Now, this speaker does not warm very much as it charges.  But you can feel charger adapter to check charging in progress.  If the charger heats a bit, then it is delivering some current to the speaker.  Moderate charger heating is a decent way to tell if the Wonderboom 2 is charging.

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.

As speaker charging wraps up, the status LED keeps flashing white.  But this speaker gives no more of a detailed reading of just how far along its recharging is.  At least, not via the top panel lights.  The Power lamp just shows that charging is indeed going on.  See the  white  glowing lamp in the last picture, pointed at by the green arrow.





When the Power LED Goes Off or Turns Solid White, Then Wonderboom 2 Charging is Done

The battery charge cycle is finished when the Power LED changes from  pulsating white to either OFF or solid, as shown in the last picture.

Even with the charger cord still plugged in, and when the speaker is powered down, this lamp stops glowing entirely when the internal battery is full, as shown next.  The Wonderboom 2 no longer recharges when the battery reaches full charge condition.

Top view of the Wonderboom 2 Bluetooth speaker. showing the dark Power button, highlighted.
Top view of the Wonderboom 2 Bluetooth speaker. showing the dark Power button, highlighted.

Finally, Unplug the Speaker and Power it On

If the power LED glows solid white as pictured above, this could mean that it did indeed charge, particularly if the unit was dead or near dead before you plugged it in.  But with the USB cable disconnected, we cannot know just by reading the power LED, just how much this speaker actually recharged, only that it did charge some. It likely did charge to full though, as long as we waited until the light stopped blinking before unplugging the charger. You can hear how full the battery is though. With the speaker ON, press and release both volume buttons at the same time.  If you hear four rising note plunks, then it is near fully recharged. Fewer notes means that it is NOT fully charged.

Happy listening to your Wonderboom Logitech speaker!

Other Posts About the Wonderboom 2 Portable Speaker

  1. Buttons Codes Functions Combinations on the Wonderboom 2 Speaker
  2. Wonderboom 2 Charging Recharging Instructions
  3. Wonderboom 2 Charge Time, How Long for Full Charging
  4. How to Put Wonderboom 2 Speaker into Pairing Mode
  5. Wonderboom 2 Battery Indicator, Charging Indicator

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  4. Logitech Wonderboom Buttons Guide
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References for How to Tell if Wonderboom 2 is Charging

  1. Wonderboom 2 Official Product Page at UltimateEars.com

Change History

  • 2020-09-01: First posted.
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