You charge the JBL Wonderboom 2 via the covered micro USB charging port. So to get the quickest JBL Wonderboom 2 charge time, use a medium to high current USB adapter. Also, exercise the battery, and do not leave the speaker on the charger for long when charging completes.
JBL Wonderboom 2 Charge Time: How Long for Full Charging
According to the specs the JBL Wonderboom 2 charges in just under three hours (2.6 hours to be exact).
JBL Wonderboom 2 Charge Time: How Long it Plays for a Full Charge
On a complete charge, the JBL Wonderboom 2 can play for up to thirteen (13) hours. But when you play it loudly, especially with extra bass, you will see somewhat shorter lasting power. We’ve seen the 2 run dead in around eleven hours at louder volumes. So to get the longest charge time, power saving helps a lot. Just play it only as loudly as you must to hear it well. Then you will probably see longer play times.
The Time Gets Smaller As the Unit Ages
Now you may own this speaker for several years. So you may notice that the time it plays from a single charge shrinks over time. But this is normal for devices like this one, that rely on ion lithium batteries.
But by working the battery every now and then, you can slow this charge fall off.
To exercise the JBL Wonderboom 2, run the battery dead first. Then charge it again every three to six months.
Also, we suggest that you not leave the speaker plugged into a charger once it has reached full charge. When the charging lamp goes dark, disconnect the speaker as soon as you can. Indeed this avoids potential overcharging and damage to the battery.