Alexa Echo Dot 3 alongside a JBL Charge 4 Bluetooth speaker.

JBL Charge 4 Watts RMS

The Charge 4 speaker is a moderate to medium power desktop style unit. The JBL Charge 4 watts RMS are plenty to fill a typical room with full sounding tunes. It also has a power bank for recharging light to moderate duty phones and smaller tablets.

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

But these bigger speakers do have some downsides.

    1. While they do cost more.
    2. Have bigger, heavier batteries and chargers.
    3. Larger drivers and magnets.

But they nonetheless offer some big plusses.

    1. They have more dynamic range.
    2. Deeper bass response.
    3. The stereo models offer typically a bigger soundstage and better sound imaging to listeners.
Picture of the JBL Charge 4 power bank speaker, front view, charging from a JBL USB AC power adapter.
JBL Charge 4 power bank speaker, front view, charging from a JBL USB AC power adapter.

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 watts 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 4, as a smaller Bluetooth speaker, is a decently loud model. Its watts can fill a small to medium size room with clear music. See below for details on its power output.

JBL Charge 4 Watts RMS: Details

    1. Battery Capacity: 27 watt-hours (3.6 volts, 7.5 amp-hours).
    2. USB Charger Power: 11.5 watts (5 volts at 2.3 amps).
    3. Power Bank Output Power: 10 watts (5 volts at 2 amps max).
    4. Play Time Per Recharge: Up to 20 hours.
    5. Total Audio Output Power on AC (RMS): 30 watts.
    6. Total Peak Audio Power: 42.42 watts.
    7. Output Power per Channel: 30 watts RMS (only one channel in this speaker).
    8. @Audio Output Power on Battery: Decreases as battery approaches depletion.

JBL Charge 4 Watts RMS: Other Notes

    1. A low power USB AC adapter (below 10 watts capacity) may not keep the battery from discharging at full volume. This depends on what you’re listening to.  So even with the Charge 4 plugged in, it still might shut down unexpectedly.
    2. Thus should this occur, just stop playing the speaker for an hour or two.  This lets it build up some reserve battery power while charging. Then, fire it up again for further party enjoyment.

Other JBL Charge 4 Posts

    1. JBL Charge 4 Bass Mode — Explained
    2. Reset JBL Charge 4 — How ?
    3. JBL Charge 4 Won’t Charge — How to Fix
    4. The Charging Indicator Explained
    5. Fixing the Not Showing Up on Bluetooth Problem


    1. Official JBL Charge 4 Support Page
    2. Where to Buy the JBL Charge 4