Planning your listening time with the QuietComfort Ultra Earbuds 2nd Gen? Here's the full picture on charging and battery life.
The Quick Answer
Your earbuds get about 6 hours of playtime (4 with Immersive Audio). The case holds another 18 hours worth of charges, giving you roughly 24 hours total before everything needs a plug.
Charging Speeds
Earbuds in the case: About an hour from dead to full. But here's the useful bit—just 20 minutes gives you 2 hours of listening. Perfect for when you're running out the door.
The case itself:
- USB-C wired: About 2 hours
- Wireless charging: About 3 hours
Wireless is convenient, but wired is faster when you need it.
What the Lights Mean
The LED on the case tells you what's happening:
- Glowing amber: Charging
- Green: Done
- Blinking amber: Case battery is low
When you open the case with earbuds inside:
- Solid white: Earbuds are charged
- Pulsing white: Earbuds are still charging
Making Your Battery Last Longer
A few practical tips:
- Immersive Audio cuts battery from 6 hours to 4. Turn it off when you don't need it.
- Keep earbuds in the case when not using them—they stay charged and ready.
- Wipe charging contacts occasionally. Dirty contacts = slow or no charging.
Real-World Battery Life
Bose says 6 hours, and testing usually shows around 5.5 hours in practice. That's normal—volume level and features used affect it. Most people find it's plenty for a workday or long flight.
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Where this comes from: this answer draws on the product's published specifications and the reviews ShopSavvy collected for it, alongside prices from ShopSavvy's price data.
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