Front right view of the JBL Charge 5 Bluetooth speaker.

JBL Charge 5 RMS Power

The JBL Charge 5 is a moderate power desktop speaker with enough RMS Power to fill a typical size room. It also has a built in power bank for recharging light to moderate duty phones and smaller tablets.

What RMS Power Numbers Tells Us

But what do the RMS Power a BT speaker has, tell us about how good it is?  Firstly, the watt is a measure of how much power the unit requires and outputs.  Plus, this metric is a nifty comparison measure. Why? Because speakers with more RMS Power tend to play louder than those with less.

Now they do cost more, have bigger, heavier batteries and chargers, along with larger drivers and magnets. Yet they nonetheless offer some big plusses.  They have more dynamic range, a deeper bass response, and stereo models offer a bigger soundstage to listeners.

Picture of the back of the JBL Charge 5, showing a charging cable inserted.
Rear view of the JBL Charge 5, showing a charging cable inserted.

Thus in general, the more powerful the speaker, the better it sounds, even at lower volume. You get better clarity due to higher accuracy reproduction of the bass, midrange, and treble parts of the music. Plus, more reserve power likely means less clipping distortion too, even at higher volumes. So, the speaker’s maximum RMS Power output is a primary indicator of speaker quality and performance.  And as such, this value is of great interest to audiophiles and novice listeners alike.

In this case, the Charge 5, is a decently loud model for all the bigger it is. Its RMS Power can fill a small to medium party area with clear and full music. See below for details on its power output.

JBL Charge 5 RMS Power: The Details

    1. Battery Capacity: 27 watt-hours (3.6 volts, 7.5 amp-hours).
    2. USB Charger Power: 15 RMS Power (5 volts at 3 amps).
    3. Power Bank Output Power: 10 RMS Power (5 volts at 2 amps max).
    4. Play Time Per Recharge: Up to 20 hours.
    5. Total Audio RMS Power on AC (RMS): 40 (30 to woofer, and 10 to tweeter).
    6. Total Peak Audio Power: 42.42 watts.
    7. RMS Power per Channel: 30 RMS (only one channel in this speaker).

JBL Charge 5 RMS Power: Additional Notes

    1. This speaker may not get enough power from a low power USB AC adapter (below 15 watts capacity). Power levels below this fail to keep the battery from discharging when playing at full volume. This of course depends on what you’re listening to.  So it could happen that even with the Charge 5 charging, you could still see the music shut OFF unexpectedly.
    2. Thus should this happen, just stop playing the Charge 5 for an hour or two. This allows it to let it build up some reserve battery power. Then, fire it up again for more party enjoyment.

Other JBL Charge 5 Posts

    1. JBL Charge 5 Power Adapter Details
    2. How to Know JBL Charge 5 Is Fully Charged
    3. Reading the Battery Level
    4. JBL Charge 5 Won’t Turn On or Charge !
    5. JBL Charge 5 Check Battery


    1. Official JBL Charge 5 Product Page
    2. Where to Buy the JBL Charge 5