iPhone Battery Life Comparison: Understanding and Maximizing Performance

iPhone Battery Life: What You Need to Know in 2026

When it comes to purchasing an iPhone, one of the most critical factors for many users is battery life. Apple aims for improvements in battery performance each generation. But what does that mean for real-world usage? From the modest cells in older models to the big batteries powering the latest iPhone 17 lineup, here is everything you need to know about iPhone battery life, longevity, and how to get the most out of your device.

iPhone Battery Capacity by Model

Battery capacity changes across iPhone models. Here is a quick reference for some of the most used devices:

• iPhone SE (2022): 1,821 mAh
• iPhone 12 Pro: 2,815 mAh
• iPhone 16 Pro Max: approximately 4,676 mAh
• iPhone 17 Pro Max: 5,088 mAh

As you can see, Apple has made big gains in raw battery capacity over the years, with the iPhone 17 Pro Max representing the largest battery Apple has ever shipped in a standard iPhone lineup.

iPhone 17 Battery Life

The iPhone 17 lineup, released in 2025, brought notable battery improvements across all models. Here is an overview of what to expect from each variant:

iPhone 17

The standard iPhone 17 has a bigger battery than its iPhone 16 predecessor and is a good choice for a full day of moderate use. Most users can expect roughly 18 to 20 hours of mixed usage - like browsing, streaming, and messaging - before needing to charge.

iPhone 17 Air

The iPhone 17 Air, Apple’s ultra-thin addition to the lineup, made known trade-offs in battery size to achieve its slim profile. Real-world testing suggests around 14 to 16 hours of mixed usage, which makes it the weakest performer in the 17 family in terms of battery endurance - it is best suited to users who prioritize portability and have reliable access to charging throughout the day. That said, Apple’s efficiency improvements to the chip help offset some of the capacity limitations.

iPhone 17 Pro

The iPhone 17 Pro delivers strong all-day battery life, comfortably reaching 20 to 22 hours of mixed usage for most users. The combination of a bigger cell and the efficiency of Apple’s latest chip make it a reliable choice for power users who don’t want to carry the bigger Pro Max form factor.

iPhone 17 Pro Max

With a 5,088 mAh battery, the iPhone 17 Pro Max is the leader in Apple’s 2025 lineup. Real-world testing from Rapid Repair and others puts standby time at over 24 hours, with heavy usage sessions reaching approximately 5 to 6 hours of continuous screen-on time. For moderate users, getting through a full day and well into a second day is typical.

Battery Longevity: How Many Charge Cycles Before Degradation?

One important distinction Apple made with the iPhone 15 generation carries forward into the iPhone 17 era. According to Apple’s official support documentation:

• iPhone 14 and earlier: Batteries are designed to retain 80% of original capacity at 500 charge cycles under ideal conditions.
• iPhone 15 and later: Batteries are designed to retain 80% of original capacity at 1,000 charge cycles under ideal conditions.

This means iPhone 15, 16, and 17 owners can expect a longer battery health lifespan before significant degradation sets in. For a person who charges their phone once per day, 1,000 cycles equates to roughly two and a half to three years before the battery drops below the 80% health threshold.

When Should You Replace Your Battery?

Apple Support recommends thinking about a battery replacement once your battery health reaches 80% or lower. At this point, your iPhone may have a hard time holding a charge throughout the day and could start experiencing unexpected shutdowns under load. You can check your current battery health by going to Settings > Battery > Battery Health & Charging.

Low Power Mode and Battery Alerts

Low Power Mode, introduced with iOS 9, remains one of the most helpful tools for extending battery life when you are running low - it cuts back on background activity, visual effects, and automatic features to conserve energy. Your iPhone will automatically prompt you to enable Low Power Mode at 20% battery and again at 10%, giving you two warnings before your device shuts down.

Battery Health Recalibration

In iOS 14.5, Apple introduced an automatic battery health recalibration feature specifically for the iPhone 11 series, tackling problems where the battery health percentage was being reported inaccurately. This recalibration process happens automatically and usually takes two to four weeks to complete. If you own an iPhone 11, 11 Pro, or 11 Pro Max and have not already been through this process, updating to a recent version of iOS will allow it to run in the background without any input from you.

Tips for Maximising iPhone Battery Life

• Enable Low Power Mode when your battery drops below 30% if you cannot charge soon.
• Avoid exposing your iPhone to extreme heat or cold, as temperature is one of the leading causes of accelerated battery degradation.
• Use Optimised Battery Charging, which learns your daily charging habits and slows charging past 80% to reduce battery aging.
• Reduce screen brightness and limit Always-On Display features if available on your model.
• Keep your iPhone updated, as Apple regularly introduces efficiency improvements through iOS updates.

Whether you are holding onto an older model or have just upgraded to the iPhone 17 lineup, understanding how your battery works and how to care for it will go a long way toward keeping your device performing well for years to come.

Factors That Affect Battery Life

Several things change the battery life of an iPhone. While Apple works to improve efficiency with each new model, things like battery capacity, usage patterns, and battery degradation over time will affect how long your phone lasts on a single charge.

Charge Cycles and Battery Health

One of the primary things changing iPhone battery life is the number of charge cycles the battery has gone through. A charge cycle is defined as 100% of your battery’s capacity, though it doesn’t have to happen all at once.

For example, using 50% of your battery one day and then recharging it, followed by another 50% the next day, would count as one charge cycle.

As your iPhone goes through more charge cycles, its battery health degrades. For iPhone 14 models and earlier, Apple designs batteries to retain at least 80% of their original capacity after 500 charge cycles. Starting with the iPhone 15 series, Apple improved battery lifespan - those models are designed to retain 80% capacity at 1,000 charge cycles under certain conditions, doubling the lifespan compared to older models.

Once battery health dips to 80% or lower, Apple recommends thinking about a battery replacement, as you might see your phone doesn’t last as long between charges - even with minimal usage.

You can monitor battery health by following the path Settings > Battery > Battery Health & Charging. There you’ll see the Maximum Capacity, which shows how much capacity your battery has retained compared to when it was new.

Battery Capacity vs Power Usage

The battery capacity of an iPhone refers to how much charge it can hold, usually measured in milliampere-hours (mAh). The bigger the battery capacity, the longer the phone can last between charges. However, capacity alone doesn’t determine battery life - it’s also about how efficiently the phone uses power.

To put capacity differences in perspective, the iPhone SE (2022) carries just 1,821 mAh. But the iPhone 12 Pro manages 2,815 mAh, and flagship models push the envelope considerably more. The iPhone 16 Pro Max features approximately 4,676 mAh. But the iPhone 17 Pro Max steps that up more to 5,088 mAh - delivering over 24 hours of video playback and roughly 5-6 hours of heavy usage in real-world testing.

High-end features like ProMotion (which adjusts the screen refresh rate), Always-On Display, and processors like the A18 and A19 Pro increase power usage. Even though bigger batteries can support these power-hungry features, they can still drain faster under heavy use compared to models with less premium features.

Pro Max models have the largest batteries in the iPhone lineup. But their benefit over standard or Pro models in day-to-day battery life can be modest, with the extra power demanded by bigger screens and high-performance functions.

iPhone 17 and iPhone 17 Air Battery Life

The iPhone 17 lineup introduced in 2025 brought notable battery improvements across the board with the addition of the new iPhone 17 Air. Here is what to expect from each model:

• iPhone 17: The standard iPhone 17 offers improved battery life over its predecessor thanks to a more efficient A19 chip and optimized power management, making it a reliable all-day performer for most users.
• iPhone 17 Air: The iPhone 17 Air is Apple’s ultra-thin model and makes some battery compromises in the name of its slim design. It carries a smaller battery than the standard iPhone 17, which means battery life is more limited - likely the shortest in the iPhone 17 lineup. It is best suited for lighter users or those who have access to charging throughout the day.
• iPhone 17 Pro: The iPhone 17 Pro delivers strong all-day battery life with efficiency gains from the A19 Pro chip, ProMotion display management, and a larger cell than the standard model.
• iPhone 17 Pro Max: The iPhone 17 Pro Max is the battery champion of the lineup, packing a 5,088 mAh battery. It delivers over 24 hours of video playback and approximately 5-6 hours of screen-on time under heavy usage, making it the best choice for power users who need maximum longevity.

All iPhone 17 models benefit from the improved 1,000 charge cycle standard introduced with the iPhone 15, which means the battery is built to retain at least 80% of its original capacity after 1,000 charge cycles under certain conditions.

Degradation of Batteries Over Time

No matter how well you take care of your iPhone, its battery will degrade over time - an inevitable part of the lithium-ion technology used in modern smartphones. As the battery ages, it holds less charge, which means that your phone won’t last as long between charges as it did when it was new.

Factors that accelerate battery degradation include:

• Frequent use of fast charging
• Letting your battery drop to 0% too often
• Constantly charging to 100%

It is also worth mentioning that in iOS 14.5, Apple introduced an automatic battery health recalibration feature for iPhone 11 models specifically - this process, which takes two to four weeks, was designed to improve the accuracy of battery health reporting for affected devices.

Battery degradation is a key reason why older iPhones eventually have a hard time with power management compared to a new device - this isn’t exclusive to Apple - any smartphone will degrade over time, and newer devices benefit from advances in battery technology and chip efficiency. Once battery health reaches 80% or lower, Apple recommends replacing the battery or thinking about an upgrade.

How to Maximize Your iPhone’s Battery Life

To help your iPhone battery last as long as possible between charges, there are a few practices you can follow:

• Keep your battery charge between 20% and 80% to avoid stressing the battery.
• Turn off power-hungry features like Bluetooth, Wi-Fi, and location services when not in use.
• Lower the screen brightness and use Dark Mode to reduce power consumption.
• Disable Background App Refresh for apps that don’t need to run in the background.
• Use Low Power Mode when your battery is running low to extend usage until your next charge. First introduced with iOS 9, Low Power Mode is also automatically prompted at 20% and again at 10% battery level.

Following these tips can help preserve your battery’s health and maximize the time between charges, no matter which iPhone model you own.

---

iPhone Battery Life Comparison

Now that we’ve talked about the things that affect iPhone battery life, let’s compare the performance of models. I’ll talk about battery capacities, performance during video playback, audio playback, and gaming, and see how each phone holds up during real-world testing.

iPhone SE Battery Life

The iPhone SE family is known for offering a cheaper entry point into the Apple ecosystem without sacrificing the features or performance that matter. While it’s a great option for those on a budget, how does the battery life compare to Apple’s flagship models?

In general, not great. The iPhone SE series has smaller batteries compared to Apple’s flagship devices, which results in shorter battery life. However, the iPhone SE series has improved over time, and that’s also the case with the introduction of the third generation iPhone SE.

1st Generation iPhone SE

Released in 2016, the iPhone SE (1st Generation) was a popular option for users who preferred the compact size of the iPhone 5S with the internal power of the iPhone 6S. While its smaller form factor was a selling point, the downside was its limited battery life - it also doesn’t have enough features that are now standard in iPhones, like Portrait Mode.

• Battery Capacity: 1,624 mAh
• Video Playback: Up to 13 hours
• Audio Playback: Up to 50 hours
• Gaming: Up to 5 hours
• Real-World Usage: Less than 1 full day with moderate use

Given its smaller battery, the first-generation iPhone SE can have a hard time getting through a full day on a single charge, and that’s especially true for users who try activities like gaming or video streaming. For light users, the phone still performs adequately.

iPhone SE (2nd Generation)

The iPhone SE (2nd Generation), released in 2020, brought a modernized design with the power of the A13 Bionic chip, the same chip used in the iPhone 11. While the battery life saw some improvements compared to the first generation, it still lags behind bigger models because of its compact size.

• Battery Capacity: 1,821 mAh
• Video Playback: Up to 13 hours
• Audio Playback: Up to 40 hours
• Gaming: Up to 6 hours
• Real-World Usage: 1 day of moderate use

Despite its small size and battery, the iPhone SE (2nd Generation) benefitted from the power efficiency of the A13 Bionic chip. For light to moderate users, this phone can still make it through the day, though it is going to need charging sooner for those who try more intensive tasks.

iPhone SE (3rd Generation)

Released in 2022, the iPhone SE (3rd Generation) retains the small form factor of its predecessors but includes the more advanced A15 Bionic chip, giving you greater efficiency and performance. While the battery capacity remains pretty small, the newer chip allows for some marginal improvements in battery life.

• Battery Capacity: 2,018 mAh
• Video Playback: Up to 15 hours
• Audio Playback: Up to 50 hours
• Gaming: Up to 6 hours
• Real-World Usage: 1 day with moderate use

Though the iPhone SE (3rd Generation) doesn’t match the battery life of Apple’s flagship models, it’s an improvement over its predecessors. Users who prioritize portability and cost-effectiveness over long-term battery performance will find this model desirable.

iPhone XR

The iPhone XR, released in 2018, was a breakthrough for its price point, giving you great value and battery life.

• Battery Capacity: 2,942 mAh
• Video Playback: Up to 16 hours
• Audio Playback: Up to 65 hours
• Gaming: Up to 7 hours
• Real-World Usage: 1 full day of moderate use

Even though it’s an older model, the iPhone XR still performs reasonably well, and that’s especially true for lighter users who don’t depend heavily on battery-draining tasks like gaming or streaming.

iPhone 12 and 12 Pro

The iPhone 12 series marked Apple’s introduction of 5G technology, which did come at the cost of battery life in some cases. The 12 and 12 Pro actually share the same 2,815 mAh battery capacity, though real-world performance can vary slightly because of software and thermal management differences.

iPhone 12:

• Battery Capacity: 2,815 mAh
• Video Playback: Up to 17 hours
• Audio Playback: Up to 65 hours
• Gaming: Up to 8 hours
• Real-World Usage: 1 full day of moderate use

iPhone 12 Pro:

• Battery Capacity: 2,815 mAh
• Video Playback: Up to 17 hours
• Audio Playback: Up to 65 hours
• Gaming: Up to 8.5 hours
• Real-World Usage: 1 day with moderate use

The iPhone 12 Pro and iPhone 12 perform in the same way in terms of battery life, with the Pro slightly edging out its base counterpart in more demanding scenarios - it’s worth mentioning that both models fall under Apple’s older battery lifespan standard - their batteries are designed to retain 80% capacity at 500 charge cycles, compared to 1,000 cycles on iPhone 15 and later models.

iPhone 13, 13 Pro, and 13 Pro Max

The iPhone 13 series improved battery life over the iPhone 12, and that’s also the case with the Pro Max variant.

iPhone 13:

• Battery Capacity: 3,227 mAh
• Video Playback: Up to 19 hours
• Audio Playback: Up to 75 hours
• Gaming: Up to 9 hours
• Real-World Usage: 1 day with light to moderate use

iPhone 13 Pro:

• Battery Capacity: 3,095 mAh
• Video Playback: Up to 22 hours
• Audio Playback: Up to 75 hours
• Gaming: Up to 9 hours
• Real-World Usage: 1.5 days with moderate use

iPhone 13 Pro Max:

• Battery Capacity: 4,352 mAh
• Video Playback: Up to 28 hours
• Audio Playback: Up to 95 hours
• Gaming: Up to 10 hours
• Real-World Usage: 1.5 to 2 days with moderate to heavy use

The iPhone 13 Pro Max was a great option for battery performance, delivering some of the best battery life ever seen in an iPhone at the time of its release. Like the iPhone 12 series, iPhone 13 models use the older 500 charge cycle standard for retaining 80% battery capacity.

iPhone 14, 14 Pro, and 14 Pro Max

Apple made slight improvements to battery life in the iPhone 14 series, with the Pro Max once again leading the way.

iPhone 14:

• Battery Capacity: 3,279 mAh
• Video Playback: Up to 20 hours
• Audio Playback: Up to 80 hours
• Gaming: Up to 9.5 hours
• Real-World Usage: 1 full day with moderate use

iPhone 14 Pro:

• Battery Capacity: 3,200 mAh
• Video Playback: Up to 23 hours
• Audio Playback: Up to 75 hours
• Gaming: Up to 10 hours
• Real-World Usage: 1.5 days with moderate use

iPhone 14 Pro Max:

• Battery Capacity: 4,323 mAh
• Video Playback: Up to 28 hours
• Audio Playback: Up to 95 hours
• Gaming: Up to 11 hours
• Real-World Usage: 1.5 days with heavy use

The iPhone 14 Pro Max is a strong choice for users who need maximum battery performance for demanding tasks. However, like all iPhone 14 and earlier models, its battery is rated to 80% capacity at 500 charge cycles - half the lifespan of the iPhone 15 and later series.

iPhone 15, 15 Pro, and 15 Pro Max

With the iPhone 15 series, Apple made an actual leap not just in battery capacity but in long-term battery lifespan. Starting with the iPhone 15, Apple doubled the charge cycle rating to 1,000 cycles before reaching 80% capacity - a significant improvement over the 500-cycle standard of iPhone 14 and earlier models.

iPhone 15:

• Battery Capacity: 3,349 mAh
• Video Playback: Up to 23 hours
• Audio Playback: Up to 75 hours
• Gaming: Up to 9 hours
• Real-World Usage: 1 full day of light to moderate use

iPhone 15 Pro:

• Battery Capacity: 3,274 mAh
• Video Playback: Up to 24 hours
• Audio Playback: Up to 80 hours
• Gaming: Up to 10 hours
• Real-World Usage: 1.5 days with regular use

iPhone 15 Pro Max:

• Battery Capacity: 4,422 mAh
• Video Playback: Up to 29 hours
• Audio Playback: Up to 95 hours
• Gaming: Up to 12 hours
• Real-World Usage: 2 full days with moderate use

The iPhone 15 Pro Max delivers longer battery life than its predecessor, and the improved 1,000-cycle lifespan rating means these batteries hold up better over the long haul compared to older iPhone generations.

iPhone 16 Battery Life

The iPhone 16 series introduces more battery improvements, with the iPhone 16 Pro Max giving the best performance across all metrics in the lineup.

iPhone 16:

• Battery Capacity: 3,561 mAh
• Video Playback: Up to 22 hours
• Audio Playback: Up to 80 hours
• Gaming: Up to 9 hours
• Real-World Usage: 1 full day of light to moderate use

iPhone 16 Pro:

• Battery Capacity: 3,582 mAh
• Video Playback: Up to 27 hours
• Audio Playback: Up to 85 hours
• Gaming: Up to 10 hours
• Real-World Usage: 1.5 days with regular use

iPhone 16 Pro Max:

• Battery Capacity: 4,676 mAh
• Video Playback: Up to 33 hours
• Audio Playback: Up to 100 hours
• Gaming: Up to 12 hours
• Real-World Usage: 2 days with moderate use

The iPhone 16 Pro Max is one of the strongest performers in Apple’s lineup, with a 4,676 mAh battery capable of delivering over 24 hours of standby and approximately 5-6 hours under heavy usage scenarios. Like all iPhone 15 and later models, it carries the improved 1,000 charge cycle lifespan rating.

iPhone 17 Battery Life

The iPhone 17 series, released in 2025, brings Apple’s most capable batteries yet across all tiers - including the debut of the ultra-thin iPhone 17 Air, which makes some known trade-offs in the name of its slim design.

iPhone 17:

• Battery Capacity: ~3,726 mAh
• Video Playback: Up to 26 hours
• Audio Playback: Up to 85 hours
• Gaming: Up to 10 hours
• Real-World Usage:
  

  Which iPhone Has the Best Battery Life?

  After comparing battery life across iPhone models, it’s clear that the Pro Max versions lead the pack - and as of 2026, the iPhone 17 Pro Max sits at the top. With a 5,088 mAh battery, it outpaces the iPhone 16 Pro Max’s already great 4,676 mAh cell, delivering over 24 hours of standby time and around 5-6 hours of heavy usage on a single charge.

  Let’s talk about how the latest lineup stacks up:

  • iPhone 17 Pro Max: The undisputed battery life champion right now. Its 5,088 mAh battery combined with Apple’s latest power-efficient hardware makes it the longest-lasting iPhone to date.
  • iPhone 17 Pro: A strong performer with excellent efficiency, though it falls short of the Pro Max due to its smaller battery capacity.
  • iPhone 17: Solid all-day battery life for most users, making it a reliable daily driver without needing a mid-day charge.
  • iPhone 17 Air: The thinnest iPhone Apple has ever released comes with expected trade-offs. Its slimmer chassis means a smaller battery, so heavy users may find themselves reaching for a charger before the day is done. That said, Apple’s efficiency improvements help it punch above its weight for lighter use cases.
  • iPhone 16 Pro Max: Still an excellent choice with its 4,676 mAh battery and over 24 hours of standby. If you’re on the 16 generation, this is the one to have.
  • iPhone 16 Pro / iPhone 16: Both offer dependable all-day battery life, with the Pro Max pulling ahead for demanding users.

  Beyond raw capacity, it’s worth keeping an eye on your battery’s health over time. Apple recommends thinking about a battery replacement once health drops to 80% or lower. On that note, it’s worth knowing that iPhone 14 and earlier models are designed to retain 80% of their original capacity at 500 charge cycles. But iPhone 15 and later models are engineered to hold that same 80% threshold all the way to 1,000 charge cycles - an improvement in long-term durability.

  To extend your battery on any model, Low Power Mode (available since iOS 9) is a reliable tool. Your iPhone will automatically prompt you to enable it at 20% and again at 10%, and it gives you extra runway when you need it most. It’s also worth understanding what minimum iOS version most apps require, since staying updated can affect both performance and battery efficiency.

  Overall, as long as your battery is in good health, any recent iPhone should comfortably last a full day of steady use. But if you want the absolute best battery life available, the iPhone 17 Pro Max is the winner in 2026. If you’re weighing your options, our guide to finding the right iPhone model can help you decide what’s worth the investment.

  What to Do with a Phone That Has Bad Battery Life

  If your iPhone no longer holds a charge like it once did, you have a few options to consider. Whether you replace the battery, upgrade your phone, or sell it for cash, it matters to know the best course of action.

  iPhone Battery Life by Model

  Battery performance changes across iPhone generations. Knowing where your model falls helps you choose if it’s time for a battery replacement or a full upgrade.

  Apple designs iPhone 14 and earlier batteries to retain 80% of their original capacity at 500 charge cycles under normal conditions. Starting with the iPhone 15 lineup, Apple doubled that rating to 1,000 charge cycles before hitting the 80% threshold - a real improvement in long-term battery durability. Apple Support recommends thinking about a battery replacement once your battery health drops to 80% or lower, which you can check any time under Settings → Battery → Battery Health & Charging.

  Here’s a quick look at battery capacities across popular iPhone models:

  • iPhone SE (2022): 1,821 mAh - the smallest in Apple’s modern lineup, with noticeably limited all-day endurance
  • iPhone 12 Pro: 2,815 mAh - adequate for moderate use but shows its age after a few years of charge cycles
  • iPhone 16 Pro Max: ~4,676 mAh - delivers over 24 hours of video playback and approximately 5-6 hours of heavy usage
  • iPhone 17 Pro Max: 5,088 mAh - the largest battery Apple has shipped to date, pushing endurance to new highs

  iPhone 17 Battery Life

  The iPhone 17 lineup, released in 2025, brought notable battery improvements across all models. Let’s talk about what to expect from each variant:

  • iPhone 17: Improved over the iPhone 16 base model with a larger cell, suitable for a full day of mixed use for most users
  • iPhone 17 Air: Apple’s thinnest iPhone ever comes with trade-offs - the Air’s slim profile houses a smaller battery than the standard iPhone 17, making it better suited for light to moderate users who prioritize form factor over endurance. Heavy users may find themselves reaching for a charger by evening
  • iPhone 17 Pro: A strong step up from the base model with a larger battery and the efficiency benefits of Apple’s latest chip, offering excellent all-day performance even under demanding workloads
  • iPhone 17 Pro Max: The flagship endurance option at 5,088 mAh, making it the longest-lasting iPhone Apple has ever produced. Designed to handle heavy streaming, gaming, photography, and navigation without concern

  All iPhone 17 models benefit from the extended 1,000-cycle battery rating introduced with iPhone 15, which means they are built to hold up longer before degradation becomes noticeable.

  Built-In Tools to Extend Battery Life

  Before committing to a replacement or upgrade, it’s worth squeezing more life out of your current phone using Apple’s built-in battery features. Low Power Mode, introduced with iOS 9, cuts back on background activity and can meaningfully extend how long you last between charges. Your iPhone will automatically prompt you to enable it at 20% battery and again at 10%.

  If you have an iPhone 11, iOS 14.5 and later include an automatic battery health recalibration feature specifically for that model. The process takes two to four weeks and can improve the accuracy of your battery health reading.

  The Importance of Recycling Old Batteries

  As smartphone batteries degrade, they don’t just lose efficiency - they can also become hazardous if not disposed of properly. Lithium-ion batteries contain toxic materials, and if they end up in landfills, they can leak harmful chemicals into the environment.

  Recycling old phone batteries helps cut back on e-waste and ensures that useful materials like lithium and cobalt are recovered and reused. Many retailers and recycling centers - like EcoATM, accept old electronics for safe disposal and recycling.

  DIY Battery Replacement

  For those who are technically inclined, replacing your iPhone’s battery yourself is an option. You can buy battery replacement kits online, which usually include the tools you’ll need to open the phone and install a new battery.

  However, DIY battery replacement can be risky. If done incorrectly, it could damage your phone or cause poor battery performance. Additionally, opening the phone yourself will void any remaining warranty.

  Professional Repair

  A safer option for those experiencing battery problems is to take the phone to Apple or an authorized repair service. Apple’s battery replacement service guarantees that the new battery will meet their standards and keep your phone running.

  Though professional repair services come at a cost, they guarantee that your phone will continue to work correctly, usually extending the life of your older devices for another year or two.

  Selling Your Phone

  If your battery life has degraded and replacing it seems like too much trouble, selling your phone may be the best option. Upgrading to a newer model with better battery life - especially one of the iPhone 17 models or the iPhone 15 or 16 lineup with their extended 1,000-cycle battery ratings - is usually the most efficient long-term answer.

  EcoATM offers a convenient way to sell your old phone and receive instant cash in return. EcoATM kiosks are located in malls and other convenient locations across the country, which makes it easy to recycle your phone and get paid on the spot.

  Why Selling to EcoATM is the Best Choice

  Selling your old iPhone to EcoATM comes with a few benefits that make it the best option for getting rid of a phone with a degraded battery.

  Instant Cash for Your Old Device

  Unlike other places where you might need to wait for a buyer, EcoATM gives instant cash when you drop off your phone at one of their kiosks.

  Environmentally Friendly Solution

  EcoATM takes care of the e-waste problem by refurbishing phones when possible or recycling them when necessary - this helps cut back on the toxic waste that comes from improperly discarded electronics.

  Convenient Locations

  With thousands of kiosks across the country, EcoATM is easy to access. You can find a nearby kiosk online and drop off your device at your convenience.

  Hassle-Free Process

  The process of selling to EcoATM takes just a few minutes. There’s no need to haggle with buyers or work with shipping costs. Simply drop off your phone and walk away with cash in hand.

  iPhone Battery Life by Model: What to Expect

  Knowing how your iPhone’s battery holds up over time helps you choose when it’s the right time to sell or upgrade. Here’s an overview of battery life expectations across the latest and recent iPhone models.

  iPhone 17 Battery Life

  The iPhone 17 lineup introduced real improvements in battery capacity and efficiency across the board. Let’s talk about what to expect from each model:

  iPhone 17

  The standard iPhone 17 is a step up in battery performance over its predecessor, with improved power efficiency from Apple’s latest chip. Users can expect a full day of use under normal conditions.

  iPhone 17 Air

  The iPhone 17 Air is Apple’s ultra-slim offering in the lineup, and with that thin profile comes some trade-offs in battery capacity. While it’s designed for light-to-moderate users, heavy usage will drain it faster than the standard or Pro models. If you frequently stream video, game, or use GPS navigation extensively, you might find yourself reaching for a charger before the end of the day. See how the Air compares to the Pro for video use before deciding which is right for you.

  iPhone 17 Pro

  The iPhone 17 Pro gives you a strong balance between performance and battery life, which makes it a reliable choice for power users who need their device to last through a demanding day without compromise.

  iPhone 17 Pro Max

  The iPhone 17 Pro Max sits at the top of the lineup with a massive 5,088 mAh battery, delivering exceptional longevity. Users can expect well over 24 hours of standby time and approximately 5 to 6 hours of heavy, continuous usage - making it the best option for users who are frequently away from a charger.

  iPhone 16 Pro Max Battery Life

  The iPhone 16 Pro Max has a 4,676 mAh battery and gives you over 24 hours of standby and roughly 5 to 6 hours of heavy usage - it remains a strong performer, though the iPhone 17 Pro Max pulls ahead with its bigger battery capacity.

  Older iPhone Battery Life

  Battery capacity drops off on older models. The iPhone 12 Pro comes in at just 2,815 mAh and the iPhone SE (2022) carries a modest 1,821 mAh battery - both of which can have a hard time lasting a full day under heavy use, and that’s especially true as the battery ages.

  How Battery Health Degrades Over Time

  Apple designs iPhone 14 and earlier batteries to retain 80% of their original capacity at 500 charge cycles under ideal conditions. Starting with the iPhone 15, Apple improved this - those models are built to retain 80% capacity at 1,000 charge cycles, doubling the expected battery lifespan.

  Apple Support recommends thinking about a battery replacement once your battery health drops to 80% or lower. You can check your battery health by going to Settings > Battery > Battery Health & Charging. If you’re seeing that figure on an older device, it may be cheaper to sell your phone and upgrade instead of paying for a replacement battery.

  It’s also worth mentioning that in iOS 14.5, Apple introduced an automatic battery health recalibration feature specifically for the iPhone 11 series, which could take 2 to 4 weeks to complete - this was designed to give users a more accurate reading of their battery’s true health.

  

  iPhone Battery Life by Model

  Battery life changes across iPhone generations. Here’s an overview of what you can expect from some of the most popular models and tips for keeping your battery healthy longer.

  iPhone 17 Series Battery Life

  Apple’s iPhone 17 lineup, released in 2025, brings notable battery improvements across the board. Let’s talk about how each model stacks up:

  • iPhone 17: Features a larger battery than its predecessor, offering improved all-day battery life suitable for moderate to heavy users. Expect roughly 18-20 hours of video playback under typical conditions.
  • iPhone 17 Plus: The largest non-Pro model in the lineup, the iPhone 17 Plus delivers extended battery life optimized for users who need their phone to last well beyond a single day. Expect upwards of 26 hours of video playback.
  • iPhone 17 Pro: Balances performance and efficiency, with a battery designed to handle demanding tasks like photography, gaming, and video editing. Expect approximately 22-23 hours of video playback.
  • iPhone 17 Pro Max: The powerhouse of the lineup, equipped with a 5,088 mAh battery - a notable jump over the iPhone 16 Pro Max’s ~4,676 mAh. Real-world testing suggests over 24 hours of standby and approximately 5-6 hours of heavy usage, making it the best battery option in the iPhone 17 family. See how it compares in our iPhone 16 Pro Max vs iPhone 17 Pro Max breakdown.

  iPhone Air Battery Life

  The iPhone Air, introduced as Apple’s ultra-thin flagship option, trades some battery capacity for its remarkably slim profile. As one of the thinnest iPhones ever made, the Air prioritizes portability, which means battery life falls closer to the standard iPhone 17 than the Pro Max. Most users can expect a full day of moderate use, though heavy users may find themselves reaching for a charger before the day is done. If battery life is your top priority, the iPhone 17 Pro Max remains the stronger choice.

  Older iPhone Models

  For reference, battery capacity on older models is considerably smaller. The iPhone 12 Pro has a 2,815 mAh battery, and the iPhone SE (2022) comes in at just 1,821 mAh - a stark contrast to the latest Pro Max. If you’re weighing whether to replace the battery on an aging device, check out how much a phone battery replacement typically costs before deciding.

  How Many Charge Cycles Can Your iPhone Battery Handle?

  Apple designs iPhone batteries to retain a percentage of their original capacity over a set number of charge cycles - but that threshold has changed with newer models:

  • iPhone 14 and earlier: Batteries are designed to retain 80% of original capacity at 500 charge cycles under ideal conditions.
  • iPhone 15 and later (including iPhone 17 and iPhone Air): Apple significantly improved longevity, with batteries designed to retain 80% of original capacity at 1,000 charge cycles - double the older standard.

  This is a big reason why upgrading from an older iPhone can seem like such a dramatic improvement in day-to-day battery performance.

  How to Monitor and Protect Your iPhone Battery Health

  Keeping an eye on your battery health is easy. Navigate to Settings > Battery > Battery Health & Charging to see your latest maximum capacity. Apple recommends thinking about a battery replacement once your battery health drops to 80% or lower, as performance and lifespan can become noticeably degraded at that point.

  A few other things worth learning about:

  • Low Power Mode was introduced with iOS 9 and remains one of the easiest ways to extend your battery when you’re running low. Your iPhone will alert you at 20% and again at 10%, giving you two chances to enable it before you’re in the red.
  • Battery recalibration: Starting with iOS 14.5, Apple introduced automatic battery health recalibration for the iPhone 11 series, a process that takes approximately 2-4 weeks of normal use to complete. This helped correct inaccurate battery health readings that some users experienced. If you’re wondering whether your device can still handle newer software, check whether your older iPhone supports recent iOS versions.

  When It’s Time to Let Go

  If your iPhone battery health has fallen well below 80% and a replacement isn’t in the cards, it may be time to upgrade. When you’re ready, consider trading in your old device through ecoATM to put money back in your pocket while keeping your old phone out of a landfill - it’s a win for your wallet and the environment.

  Trade in Your Phone Today with ecoATM

  If your iPhone no longer meets your preferences in terms of battery life, it may be time to upgrade. Whether you sell it through ecoATM or seek professional battery replacement, your options help you get the most out of your old device.

  When you want to part with your old device in an environmentally-friendly way and buy a great new phone, ecoATM is the way to go. Price your device online or head to a nearby kiosk to sell your old device with us!

  iPhone Battery Life by Model

  Battery performance changes across iPhone models. Here is an overview of what you can expect from some of the most popular devices:

  iPhone 17 Battery Life

  The iPhone 17 lineup, released in 2025, brings notable battery improvements across the board. Here is how each model stacks up:

  • iPhone 17: Features a competitive battery suited for all-day use, with Apple optimizing efficiency through its latest chip architecture.
  • iPhone 17 Plus: The larger form factor allows for an expanded battery, offering extended use well beyond a single day for most users.
  • iPhone 17 Pro: Balances power and performance with a battery designed to handle demanding workloads, photography, and ProMotion display usage throughout the day.
  • iPhone 17 Pro Max: The most capable battery in the lineup at 5,088 mAh, delivering exceptional endurance. Users can expect approximately 5 to 6 hours of heavy usage and well over 24 hours of standby time, making it one of the longest-lasting iPhones Apple has ever produced.

  iPhone Air Battery Life

  The iPhone Air, Apple’s ultra-thin addition to the iPhone 17 family, makes some trade-offs in battery capacity to achieve its slim profile. While it might not match the Pro Max in raw endurance, Apple’s chip efficiency helps the Air deliver basic all-day battery life for light to moderate users. Those who are heavy streamers or gamers may want to consider the standard iPhone 17 or Pro models for more steady battery life throughout the day.

  iPhone 16 Pro Max Battery Life

  The iPhone 16 Pro Max features approximately 4,676 mAh of battery capacity, delivering over 24 hours of standby and roughly 5 to 6 hours of heavy usage - it remains a strong performer, though the iPhone 17 Pro Max edges it out in capacity and efficiency.

  Older iPhone Models

  Older devices show something different. The iPhone 12 Pro has a 2,815 mAh battery. But the iPhone SE (2022) has just 1,821 mAh. These smaller batteries, combined with aging battery health, give you noticeably less performance over time. Apple notes that iPhone 14 models and earlier are designed to retain 80% of original capacity at 500 charge cycles - iPhone 15 models and newer are rated to 80% at 1,000 charge cycles under certain conditions. Apple Support recommends thinking about a battery replacement once your battery health drops to 80% or lower.

  If your iPhone is aging and battery health is declining, trading it in through ecoATM is a smart and eco-friendly way to put its value toward your next upgrade.

  FAQs

  Which iPhone has the best battery life?

  The iPhone with the best battery life is the iPhone 17 Pro Max, which has a 5,088 mAh battery and has exceptional endurance across real-world tasks like web browsing, video streaming, gaming, and audio playback. It surpasses the iPhone 16 Pro Max, which has a 4,676 mAh battery delivering around 24 hours of standby time and approximately 5-6 hours of heavy usage on a single charge.

  What iPhone battery lasts longer?

  Among all iPhones currently available, the iPhone 17 Pro Max has the longest-lasting battery, followed closely by the iPhone 17 Plus and iPhone 16 Pro Max. For users who need all-day or multi-day battery performance, the Pro Max and Plus models outperform their standard and smaller counterparts. The iPhone SE (2022), by comparison, features just a 1,821 mAh battery, which makes it the weakest in the lineup for battery endurance.

  How does the iPhone 17 battery life compare across models?

  Battery life varies across the iPhone 17 lineup. Here is a general overview of what to expect:

  • iPhone 17 Pro Max: The best battery life in the lineup, with a 5,088 mAh battery built for heavy users who need maximum endurance throughout the day and beyond.
  • iPhone 17 Pro: Strong battery performance suited for most power users, though it falls short of the Pro Max due to its smaller form factor and battery capacity.
  • iPhone 17: A solid mid-range battery experience designed to last a full day for average users.
  • iPhone Air: Apple’s thinnest iPhone to date trades some battery capacity for its ultra-slim design, making it better suited for light to moderate users rather than heavy power users.

  If battery life is your top priority, the iPhone 17 Pro Max is the choice. If you want a balance of thinness and portability, the iPhone Air is strong but comes with trade-offs in endurance.

  Is 80% battery health good for iPhone?

  An iPhone showing 80% battery health is considered the threshold where replacement can become worth thinking about. Apple recommends thinking about a battery replacement once health reaches 80% or lower, as the battery’s ability to hold a charge diminishes noticeably at that point. It’s worth mentioning that Apple improved its battery lifespan standards with the iPhone 15 lineup and newer models, which are designed to retain 80% of their original capacity after 1,000 charge cycles. iPhone 14 models and earlier are designed to retain 80% capacity after 500 charge cycles, which means newer iPhones should maintain healthy battery performance for longer before hitting that 80% threshold.

  Will an iPhone battery last 5 years?

  With care, an iPhone battery can last close to 5 years before requiring replacement, though performance will slowly decline over time. For iPhone 15 and later models, Apple’s improved 1,000-cycle standard means the battery should hold up considerably better over the long term compared to older models rated for 500 cycles. Habits that help extend battery lifespan include staying away from extreme temperatures, not letting the battery drain regularly, and using optimized charging settings. Once battery health drops below 80%, most users will see the device holds less charge and drains faster, at which point a replacement battery is worth thinking about to restore normal performance.