Picture of the Sony SRS XB31 speaker, connected and charging.

Sony SRS XB31 Charge Time

You charge the Sony SRS XB31 wireless speaker via the micro USB style power input port, and to get the quickest charge time and fullest recharge, use a medium current USB charger for fastest yet most cost effective results. Details follow.

Sony SRS XB31 Charge Time: How Long to Fully Recharge

According to the specs for this speaker the time it takes to charge the SRS XB31 Bluetooth speaker is five (5.0) hours, using a 5 volt, 1.5 amp, 7.5 watt charger or greater. You can also use a lower power 0.5 amp, 2.5 watt charger.  But this increases the recharge time to ten to twelve hours.

The orange glowing -CHARGE- light on the Sony SRS XB31.
The Sony SRS XB31 -CHARGE- lamp glowing orange.

How Long the XB31 Plays on a Full Charge

On a complete charge, the speaker can play for up to twenty-four (24) hours, thanks to its built in lithium ion battery.  But when you play it loudly, especially with thumping bass, you will indeed see much shorter playing times per recharge.

We see this Bluetooth speaker die in around six hours when we play at loudest volumes. So to get the longest play time per recharge, power saving is useful.  Just play it only as loudly as you need to, to hear it well throughout your listening space.

Picture of the right front of the XB31.
The right front view of the XB31.

The Play Time Gets Shorter as the Sony SRS XB31 Ages

If you own this speaker over a few years, you may notice that the time it plays from a single charge shrinks as the speaker gets older.  This is normal for devices like this one, that rely on lithium ion batteries.

But by deep cycling the battery now and then, you can slow this charge capacity decrease. So to exercise the XB31, run the battery fully dead, and then recharge it again every three to six months.

Also, we advise that you avoid leaving the speaker connected to a charger once it reaches full charge.  Right after the charging lamp goes out, unplug the speaker as soon as you can, to avoid overcharging it and aging the battery early.

Other Posts About the Sony SRS XB31

    1. Sony SRS XB31 Bluetooth Pairing Instructions
    2. Replacement Charger for the Sony SRS XB31 Speaker
    3. Sony SRS XB31 Not Recharging, How to Fix
    4. Charging Instructions for the Sony SRS XB31 Bluetooth Speaker
    5. Sony SRS XB31 BT Speaker Pairing Instructions

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    1. Official Sony SRS XB31 Product Page at Sony.COM

Revisions Log

    • 2022-08-13: First published.