Which Apple Watch Has the Best Battery Life? (Complete Comparison Guide)

The Apple Watch is one of the most powerful smartwatches available today. But if you’ve ever found yourself constantly charging your watch, you know that battery life is a crucial factor when choosing the right model.
Whether you need an smartwatch that lasts all day or one that can go multiple days on a single charge, this guide will help you find out which smartwatch has the best battery life.
Let’s dive in!
Table of Contents
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Key Takeaways
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Which Apple Watch Model Has the Best Battery Life?
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Watch Battery Life Comparison Chart
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Apple Battery Lifespan & Replacement
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How to Improve Apple Watch Battery Life
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FAQs About Apple Watch Battery Life
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Final Verdict: Which Apple Watch Has the Best Battery Life?
Key Takeaways
- Watch Ultra 2 has the longest, lasting 36 hours in normal mode and up to 72 hours in Low Power Mode.
- Apple SE (2nd Gen) is the best budget-friendly option.
- Series 9 offers a balance between features and battery efficiency.
- GPS, Always-On Display, and LTE connectivity significantly impact battery performance.
- Optimizing settings can extend battery life by several hours per charge.

Which Apple Watch Model Has the Best Battery Life?
It varies depending on the model, features, and usage habits. Let’s compare the best Apple Watch models based on battery performance.
1. Apple Watch Ultra 2 – The Longest Battery Life (Best for Adventure & Fitness)
Battery Life:
To begin with, the Apple Watch Ultra 2 offers an impressive 36 hours of battery life in standard mode. Moreover, when switched to Low Power Mode, it can last up to 72 hours, significantly extending usability.
In particular, the Apple Watch Ultra 2 is specifically designed for athletes, outdoor adventurers, and divers who require a long-lasting and reliable battery. Notably, it is equipped with a massive 542 mAh battery, which is almost twice as large as the one found in the Series 9. Because of this, users can enjoy extended performance without frequent recharging.
Why It Lasts Longer:
- First and foremost, it has a larger battery capacity than other models, allowing for prolonged usage.
- In addition, its optimized dual-frequency GPS tracking enhances energy efficiency, ensuring minimal power consumption during navigation.
- , the Low Power Mode extends battery life by turning off the Always-On Display and other non-essential features.
this watch is best suited for hikers, triathletes, and users who need a multi-day battery life to support their active and adventurous lifestyles. Not only does it offer exceptional durability, but it also provides advanced performance features that cater to outdoor enthusiasts. Furthermore, with its extended battery life and rugged design, it ensures reliability in even the most demanding conditions. With all these features in mind, the Apple Watch Ultra 2 undoubtedly stands out as the top choice for those who prioritize endurance, functionality, and performance.
Want to compare Apple Watch models? Check out this Apple Watch comparison guide.
2. Apple Watch Series 9 – Best for Everyday Battery Life
Battery Life:
- 18 hours in normal mode
- 36 hours in Low Power Mode
The Apple Watch Series 9 is the latest flagship model, featuring an S9 SiP chip for power efficiency.
Why It’s a Solid Option:
Low Power Mode can double battery life
Always-On Retina Display can be turned off to extend battery life
Fast charging reaches 80% in about 45 minutes
Best for: Everyday users who want the latest Apple Watch with solid battery performance.
Looking for Apple Watch Series 9 bands? Check out the best Apple Watch Series 9 bands.
3. Apple Watch SE (2nd Gen) – Best Budget Battery Life
Battery Life:
To start with, the Apple Watch SE (2nd Gen) provides 18 hours of battery life in normal mode. However, when switched to Low Power Mode, it can extend up to 36 hours, making it a great option for those who need longer usage between charges.
In comparison to other models, the Apple Watch SE (2nd Gen) is Apple’s most affordable smartwatch, yet it still offers impressive battery efficiency. Despite its lower price, it maintains solid performance without compromising essential features.
Why It’s Battery-Efficient:
- First of all, it lacks an Always-On Display, which significantly reduces power consumption.
- Additionally, it is powered by the efficient S8 chip, which optimizes battery usage throughout the day.
- Moreover, it delivers similar battery performance to the Series 9 but at a more budget-friendly price.
The Apple Watch SE (2nd Gen) is best suited for budget-conscious users who still want reliable battery performance. Because of its efficiency and affordability, it remains an excellent choice for those looking for a well-balanced smartwatch.
Apple Watch Battery Life Comparison Chart
Apple Watch Model | Battery Life (Normal Mode) | Battery Life (Low Power Mode) | Fast Charging |
---|---|---|---|
Apple Watch Ultra 2 | 36 hours | 72 hours | Yes |
Watch Series 9 | 18 hours | 36 hours | Yes |
Apple SE (2nd Gen) | 18 hours | 36 hours | Yes |
Apple Watch Series 8 | 18 hours | 36 hours | Yes |
Watch Ultra (1st Gen) | 36 hours | 60 hours | Yes |
Battery Lifespan & Replacement

Watch gradually degrade over time, much like iPhone . As a result, you may notice a decrease in battery performance after extended use.
How to Check Your Battery Health:
- First, open the Settings app on your Apple Watch.
- Next, navigate to Battery → Battery Health to view the current status.
- Then, check the Maximum Capacity percentage, which indicates how much charge the battery can still hold compared to when it was new.
- Finally, if the battery health is below 80%, you’ll likely experience noticeably shorter battery life, meaning it might be time to consider a battery replacement.
By regularly checking your battery health, you can better manage your Apple Watch’s performance and longevity.
Battery Replacement Costs
Apple Watch Model | Battery Replacement Cost |
---|---|
Apple Watch Ultra 2 | $99 |
Apple Watch Series 9 | $79 |
Apple Watch SE (2nd Gen) | $79 |

How to Improve Apple Watch Battery Life
Want longer battery life? Here are some essential battery-saving tips you can try:
First and foremost, enable Low Power Mode, as it effectively doubles your battery life by reducing background activity and limiting power-hungry features. Additionally, turning off the Always-On Display can save 20-30% of battery per day, which can make a significant difference in overall performance. Moreover, these small adjustments not only help extend battery life but also ensure that your Apple Watch lasts throughout the day without frequent charging. By combining these strategies, you can maximize efficiency and get the most out of your device.
Moreover, to further conserve power, disabling Background App Refresh prevents unnecessary apps from draining energy in the background. Similarly, lowering screen brightness can help extend battery life by reducing power consumption throughout the day.
Lastly, if you’re not using cellular features, turning off LTE when not needed is highly recommended, since LTE drains battery quickly. By following these simple yet effective tips, you can maximize your Apple Watch’s battery life and enjoy longer usage without frequent charging.

FAQs About Apple Watch Battery Life
Which Apple Watch lasts the longest?
The Apple Watch Ultra 2 offers the longest battery life among Apple’s smartwatch lineup. In fact, when using Low Power Mode, it can last for up to 72 hours. This makes it an excellent choice for those who need extended usage, such as adventurers, hikers, or anyone who prefers fewer charging interruptions. Additionally, compared to other models, the Ultra 2 stands out by providing both durability and longevity, ensuring you stay connected for longer periods without worry.
Can I replace my Apple Watch battery myself?
Instead, if your battery needs servicing or replacement, you’ll have to visit an Apple Store or an authorized repair center. Unfortunately, Apple designs its watches with a sealed, compact structure, making it difficult for users to replace the battery themselves. However, by taking it to an official service provider, you can ensure a safe and professional battery replacement, keeping your watch in optimal condition.
External Links
These authoritative sources offer valuable insights, detailed comparisons, and practical battery-saving tips. By referring to them, you can gain a better understanding of battery performance, learn how to extend your Apple Watch’s battery life, and make informed decisions about usage and settings. Plus, they provide expert recommendations that can help you get the most out of your device.
- Apple Official Battery Life Information – Apple Watch Battery Performance
- Watch Ultra Battery Details – Apple Watch Ultra 2 Specs
- Apple Battery Replacement Guide – Apple Watch Battery Service
YouTube Links
These YouTube videos offer real-world tests, in-depth comparisons, and practical battery-saving tips for Apple Watches. By watching them, you can see how different models perform in everyday scenarios, learn effective ways to extend battery life, and get hands-on insights from tech experts. Plus, these videos provide visual demonstrations, making it easier to understand and apply the tips to your own device.
- Apple Ultra 2 Battery Test (Real-World Usage) – Watch the Video
- 17 Apple Watch Battery Saving Tips That Actually Work– Watch the Video
- Apple Watch Ultra 2 vs Series 9 - 0 / SE / SE2 / Battery Life DRAIN Test – Watch the Video

Final Verdict: Which Apple Watch Has the Best Battery Life?
For maximum battery life, the Apple Watch Ultra 2 is the clear winner, lasting significantly longer than other models—especially in Low Power Mode.
However, if you’re looking for an everyday smartwatch with solid battery performance, the Apple Watch Series 9 is a great option. It strikes a balance between functionality and longevity, making it ideal for daily wear without frequent charging concerns.
Battery Overall: Apple Watch Ultra 2
Best Everyday Battery: Apple Watch Series 9
Budget Battery: Apple Watch SE (2nd Gen)
Want the best Apple Watch accessories? Check out the top Apple Watch bands to enhance your experience!
Blog Author section.

Emily Johnson
Emily is a seasoned writer and technology enthusiast with a passion for digital watches and wearable tech. With over a decade of experience in the tech industry, she brings a wealth of knowledge and insights to her readers.
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