iPhone Battery Health After 1 Year: The Complete Analysis

After a year of use, iPhone battery health typically declines due to normal wear and tear. Factors such as charging habits, temperature, and usage patterns can affect battery health. It’s common to see a decrease of around 20% in maximum capacity, but this can vary depending on individual usage.

Ah, the iPhone 6. Apple’s crown jewel has long been the benchmark for premium smartphones, and this holds true for the newer iPhone models as well. While the sleek design, stunning camera, and robust software ecosystem are often highlighted, the battery remains an essential, albeit often overlooked, component. With every software update and new app installed, users tend to wonder about the amount of time their iPhone 6’s battery health fares, especially after a year of use. Let’s delve deep into this subject and explore how iPhone models, including the newer models like the iPhone XR, perform in terms of battery life and peak performance capability when they have a full charge, courtesy of Apple’s new features.

Of course, you may be looking beyond iPhones. In that case, how battery life and performance compare between Apple’s products and its competitors is an important question to ask. For new phones, Apple generally wins out. In both the performance and battery life benchmarks referenced above, iPhone models placed above their counterparts from Android and Google from the same year. But what about refurbished phones? Here, it’s still better to trust iPhones over other refurbished phones.

Understanding Battery Health

Battery health refers to the maximum capacity of your phone’s battery to hold a charge compared to when it was new under normal conditions. Over time, batteries chemically age, resulting in a diminished capacity to hold charge and shorter amounts of time before a device needs to be recharged. This can be referred to as the battery’s maximum capacity, which is the measure of battery capacity relative to when it was new. As the battery ages, it will have a lower capacity, leading to fewer hours of usage between charges. In addition, a phone’s battery’s ability to deliver maximum instantaneous performance, or “peak power,” may decrease. In order for a phone to function properly, the electronics must be able to draw upon instantaneous power from the battery. One attribute that affects this instantaneous power delivery is the battery’s impedance. Follow these tips to maximize your phone’s battery performance and help extend the battery lifespan.

Staying in the 20-80% range of battery charge can help minimize battery wear and ensure optimal performance and longevity. Unless you have a specific need, don’t use the top and bottom 20% of your phone’s battery. Stop charging at around 80%, and start recharging at around 20%; staying in that 20–80 range gives you the least amount of battery wear. According to Apple, a normal battery is designed to retain up to 80% of its original capacity at 500 complete charge cycles. The bottom line is that following these charging habits can help maintain your phone’s battery health and prolong its lifespan.

Factors Affecting iPhone Battery Health

Several factors can impact the health of your iPhone’s battery:

  1. Charge Cycles: One charge cycle is defined as using 100% of your battery’s capacity, but not necessarily in a single charge. For instance, if you use 50% of your battery today and then recharge it fully overnight, and use 50% the next day, that’s one charge cycle. iPhone batteries, like those in other smartphones, are rated for a certain number of charge cycles, usually around 500 to 800, after which they can retain about 80% of their original capacity.
  2. Temperature: Exposing your iPhone to extremely cold or hot temperatures can have adverse effects. Ideally, iPhones should be operated at ambient temperatures between 0º and 35º C.
  3. Software Updates: Sometimes, software updates can temporarily decrease battery life due to increased activities in the background. However, Apple frequently releases optimizations in subsequent updates.
  4. Usage Patterns: Intense tasks, like 3D gaming or prolonged video streaming, can heat up your phone and consume battery quickly.
iPhone Battery Health
iPhone Battery Health

iPhone Battery Health After 1 Year

Assuming an average user charges their phone once a day, they’d be at around 365 charge cycles in a year. This means they’re using up almost half, if not more, of the battery’s optimal charge cycles within the first year.

For most iPhone users, by the end of the first year, you might notice:

  1. Slight Degradation: You may see the battery health in “Settings > Battery > Battery Health” reading somewhere between 90% to 95%. This indicates that the battery can hold 90-95% of its original charge. This slight degradation is normal and expected.
  2. Marginally Reduced Screen Time: Depending on usage patterns, users might witness a marginal reduction in screen-on time. For example, if you used to get 10 hours of usage when the phone was new, it might be closer to 9 or 9.5 hours after a year.
  3. Performance Management: Apple introduced a feature that dynamically manages peak performance to prevent unexpected shutdowns if the battery isn’t providing enough power. If your phone has experienced any shutdowns due to battery health, this feature might be enabled, and you can view its status in the Battery Health section.

Maintaining Battery Health

While battery degradation is a natural process, there are ways to ensure the longevity of your iPhone’s battery:

  1. Avoid Extreme Temperatures: As mentioned earlier, both cold and hot extremes can damage the battery. Don’t leave your iPhone in a car on a hot day or out in the cold.
  2. Update Your Software: Ensure that your iPhone is running the latest version of iOS. Apple frequently releases updates that optimize battery life.
  3. Mind Your Charge Habits: It’s a myth that you should deplete your iPhone’s battery to 0% before recharging. Modern lithium-ion batteries perform best when they’re kept between 20% and 80%.
  4. Manage Background Apps: Regularly check which apps are consuming the most battery. Ensure that apps aren’t constantly refreshing in the background unless necessary.
  5. Use Original Chargers: While there are many third-party chargers available, using Apple’s original chargers or certified third-party chargers is recommended for optimal battery health.


In essence, while it’s normal for your iPhone’s battery health to degrade slightly after a year, it’s typically not enough to cause a significant impact on daily use. With a few precautions and by maintaining good habits, you can ensure your iPhone serves you well beyond its first year and keeps you connected without constantly reaching for the charger.

FAQ: iPhone Battery Health After 1 Year

1. What is iPhone battery health?

Battery health refers to the current capacity of your iPhone’s battery compared to its capacity when new. It’s a measure of how well your battery can hold a charge.

2. Where can I find my iPhone’s battery health?

You can view your iPhone’s battery health by navigating to Settings > Battery > Battery Health.

3. What’s a normal battery health percentage after one year?

After a year, it’s common for an iPhone battery’s health to be around 90% to 95% of its original capacity, depending on usage.

4. What are charge cycles, and how do they affect battery health?

A charge cycle is completed when you’ve used a total of 100% of your battery’s capacity, but not necessarily all at once. iPhone batteries have a set number of charge cycles (around 500 to 800) before they can retain only about 80% of their original capacity.

5. Can software updates affect my battery health?

Software updates can sometimes temporarily impact battery life due to increased background activities. However, Apple typically optimizes battery performance in subsequent updates.

6. Does temperature affect my iPhone’s battery health?

Yes, extreme temperatures, both cold and hot, can harm your battery. Ideally, iPhones should be operated at ambient temperatures between 0º and 35º C.

7. What is performance management in terms of battery health?

Apple introduced performance management to prevent unexpected shutdowns when the battery can’t provide enough power. It’s a feature that dynamically manages the iPhone’s performance according to battery health.

8. How can I maintain or improve my iPhone’s battery health?

Avoid extreme temperatures, keep your software updated, maintain a charge between 20% and 80%, manage background apps, and use original or certified chargers.

9. My iPhone’s battery health is below 80% after a year. Is this normal?

While a drop to 90-95% is typical after a year, a drop below 80% may indicate heavy usage or exposure to factors that can accelerate battery degradation. It might be worth visiting an Apple store for a diagnostic.

10. Can I replace my iPhone’s battery if its health degrades significantly?

Yes, Apple offers battery replacement services. If your battery health has degraded significantly and is affecting usability, it’s often more cost-effective to replace the battery than to buy a new iPhone.

11. Is it true that I should completely discharge my iPhone’s battery before charging?

No, this is a myth. Modern lithium-ion batteries, like those in iPhones, function best when kept between 20% and 80%. It’s unnecessary and not recommended to deplete it to 0% regularly.

12. Does using non-Apple chargers affect battery health?

Using non-certified third-party chargers can potentially harm your iPhone’s battery. It’s best to use Apple’s original chargers or certified third-party chargers to ensure the health and safety of your device’s battery.

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