You charge the Flip 6 Bluetooth speakers conveniently via their USB-C charge port. So to get the shortest charging time and fullest charge when the JBL Flip 6 runs dead, be sure to use a large enough USB-C power delivery adapter.
JBL Flip 6 Charging Time: How Long to Fully Recharge
According to the specs for this speaker the time it takes for full JBL Flip 6 Bluetooth speaker charging, is two hours and thirty minutes (2.5 hours) when you use a 5 volt, 3 amp, 15 watt (at least) adapter.

JBL Flip 6 Charging Time: How Long it Plays Per Single Charge
On a full charge, the JBL Flip 6 speaker can play for up to twelve (12) hours from a single charge, due to its 4,800 MaH, 3.6 volt, 17.28 watt-hour lithium ion polymer battery. But when you play it extra loud, particularly with lots of bass, you will see shorter playing times. We’ve seen this speaker run dead in around nine hours when run at full volume. So to get the most charge time from it, power conservation is key. Only play it as loudly as you need to.

The Play Time Shrinks Over Time
If you own this speaker over a few to several years, you may notice that the time it plays from a single full charging decreases as it ages. This is normal for devices such as this one, that rely on lithium ion polymer batters. But by exercising the battery, you can slow this wearing out. To work the JBL Flip 6, run the battery dead and charge it again every three to six months when you don’t use the speaker.
Also, we suggest that you not leave the speaker plugged into a charger once the charging completes. So once the charging lamps completely go out, disconnect the speaker right away to avoid overcharging and battery damage.
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References
Revisions Log
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- 2022-09-08: First published.