Apple’s newest flagship smartwatches, the Apple Watch Ultra 3 and Apple Watch Series 11, come with significant improvements in battery life. This represents a significant improvement, especially for the Ultra series, where battery life has always been a key feature. Here are the details and a comparison.
Battery Life Comparison: Ultra 3, Ultra 2, and Series 11
The Apple Watch Ultra 3 stands out by offering a longer battery life than previous models in the series. Here are Apple’s estimated battery life figures for the watches:

Apple Watch Ultra 3
- Normal Use: Up to 42 hours
- Low Power Mode: Up to 72 hours
Apple Watch Ultra 2
- Normal Use: Up to 36 hours
- Low Power Mode: Up to 72 hours
Meanwhile, the Apple Watch Series 11 also improves battery life, bringing it closer to the Ultra models.
Apple Watch Series 11
- Normal Use: Up to 24 hours
- Low Power Mode: Up to 38 hours
While all three models support fast charging, there are significant differences in charging speeds. Here are Apple’s official charging times:
- Ultra 3: 80% charge in approximately 45 minutes; 12 hours of normal use in 15 minutes; 8 hours of sleep tracking charge in 5 minutes
- Ultra 2: 80% charge in approximately 1 hour
- Series 11: 80% charge in approximately 30 minutes; 8 hours of normal use in 15 minutes; 8 hours of sleep tracking charge in 5 minutes
As you can see, the Apple Watch Ultra 3 and Series 11 offer similar fast charging features, while the Ultra 2 falls slightly behind in this area.
Many of the new Watch features Apple introduced at its event this week are also supported on older watch models. However, the battery life improvements are among the biggest upgrades this year for the Apple Watch Ultra 3 and Series 11. This increase is a welcome development for these products, which have had stagnant battery performance for years.
So, what are your thoughts on this? Share your thoughts in the comments.

