Halloween DealsAmazon USHalloween week deals: useful picks before month-endAmazon US: current deals, useful picks and tech finds.Check DealsClean PCRecommendedOne scan can reveal what keeps slowing WindowsLook for cleanup and repair opportunities.Run ScanHalloween DealsAmazon USOctober picks are moving - compare before checkoutAmazon US: current deals, useful picks and tech finds.See Picks×
Skip to content
Cupertino desk3 min

How to Check iPhone Battery Health and When to Replace the Battery

Check the right Battery Health screen for your iPhone model, interpret its capacity and performance readings, and weigh Apple’s service alerts against real-world symptoms.
Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.

To check your iPhone battery, open Settings > Battery, then tap Battery Health on iPhone 15 models and later running iOS 17.4 or later, or Battery Health & Charging on iPhone 11, 12, 13, and 14. Look at Maximum Capacity, Peak Performance Capability, and any service or replacement message. Apple does not set one capacity percentage that automatically means every iPhone battery must be replaced; consider the alert alongside runtime, shutdowns, and performance.

How to check iPhone battery health

  1. Open Settings.
  2. Tap Battery.
  3. Choose the health screen for your model: Battery Health on iPhone 15 models and later with iOS 17.4 or later, or Battery Health & Charging on iPhone 11, 12, 13, or 14.
  4. Review Maximum Capacity, Peak Performance Capability, and any message about service or replacement.

Labels and the details shown vary by model and iOS version. On iPhone 15 models and later with iOS 17.4 or later, the screen can also show cycle count, manufacture date, and first-use date. Apple’s iPhone battery guidance describes the available information.

As an Amazon Associate I earn from qualifying purchases.

What the battery health readings mean

Maximum Capacity

Maximum Capacity compares the battery’s capacity now with its capacity when new. As the battery chemically ages, it holds less charge, so the iPhone may run for fewer hours between charges. A figure slightly below 100% can be normal, including when time has passed between manufacture and activation.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.

Peak Performance Capability

This describes whether the battery can provide the instantaneous power the iPhone needs. Capacity and peak performance are related, but they are not the same: a battery may hold less charge and still support normal peak performance. As a battery ages, higher internal impedance can make it less able to deliver peak power. In some cases, after an unexpected shutdown, iOS applies performance management to help prevent another shutdown.

#1 Best Overall
LL TRADER Battery Replacement for iPhone 12/12Pro with Repair Kit
  • [Compatible Model] - This battery is only compatible with iPhone 12 & 12 PRO,(NOT FOR12 PRO MAX & 12 MINI) A2172, A2402, A2404, A2403, A2341, A2406, A2408, A2407. Please confirm your iPhone model before purchase. (Check your iPhone model at the following steps: Settings--General--About--Model Name)
  • [High Capacity] - 24000 mAh high capacity, greater than what the original iPhone 12/12 PRO battery has, which means you don't have to charge your iPhone as frequently as you used to be.
  • [Long Lasting] - Brand new 0 cycle battery, designed and tested to last over 1000 cycles. Charging speed and the power conversion rate increase by 90% with new technology.
  • [Protection for Safety] - Built-in new upgrade smart tech IC chip to prevent over-charging, over-heating, Short-Circuiting, etc for safety.
  • [Package Includes] - Brand new battery replacement for iPhone 12/12PRO, all required tool kits to replace the battery.Please watch video before install the battery.

Apple may show the message “Your battery is currently supporting normal peak performance.” If the battery cannot provide the required peak power, the performance information may instead describe performance management or recommend service.

Battery life versus battery lifespan

Battery life means how long an iPhone runs before it needs recharging. Battery lifespan means how long its battery lasts before it needs replacement. Chemical aging is affected by charge cycles and care as well as calendar time; the two terms describe different things.

Rank #2
Sale
XYIRMCYF 24300mAh Super Capacity Battery Compatible with iPhone 14 Pro, 0 Cycle Li-Polymer Replacement Battery for iPhone 14 Pro, with Professional Repair Tool Kit
  • 【Compatible Model】This Replacement battery compatible with iPhone 14 Pro (Model: A2890, A2650, A2889, A2892). (Note: NOT compatible with other iPhone model). Before purchasing this battery, please make sure that the your Phone model number matches!
  • 【New Upgraded Capacity】 24300mAh Super capacity compatible with iPhone 14 Pro, more power than original standard battery, same size but more capacity and more power life. New 0 Cycle, up to 2000 charging cycles. You will no longer have to worry about your Phone running out of battery quickly!
  • 【Easy Installation】XYIRMCYF Battery for iPhone 14 Pro with complete professional repair tool kits. If you want to replace the battery more easily, we highly recommend you to watch videos about 14 Pro battery replacement on YouTube. Novices can easily install, complete. If you have any questions about the battery, please contact us.
  • 【Safe and Quality】XYIRMCYF 14 Pro Replacement Battery is made of A+ grade high quality batteries. Built-in smart chip to prevent over charging, over discharging and overheating protection, short circuit protection, high safety performance, long service life. Meanwhile, our batteries are tested under strict quality control standards and certified by CE, FCC, UL, PSE, ROHS. Ensures efficient and safe use.
  • 【12 Months, Exchange or Refund Guaranteed】 We place a high value on customer experience. If you have any questions, whether before or after sales, please do not hesitate to contact us. We will do our best to solve it for you.

When to replace an iPhone battery

Arrange service when iOS displays a replacement recommendation or a significantly degraded battery message. Apple’s alert wording, “Your battery’s health is significantly degraded,” means battery and performance problems may be more noticeable. Apple says the message does not indicate a safety issue, and that an Apple Authorized Service Provider can replace the battery to restore full performance and capacity. See Apple’s explanation of battery health and performance.

What’s actually slowing this PC down?

Pick the symptom - the matching free tool is one click away.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.

Even without an alert, consider service if the phone no longer lasts as long as you need between charges, shuts down unexpectedly, or has performance problems you associate with its battery. The right timing depends on how dependable the phone needs to be for your daily use.

Rank #3
Sale
XYIRMCYF 24300mAh Super Capacity Battery Compatible with iPhone 15, 0 Cycle Li-Polymer Replacement Battery for iPhone 15, with Professional Repair Tool Kit
  • 【Compatible Model】This Replacement battery compatible with iPhone 15 (Model: A2846、A3089、A3092、A3090). (Note: NOT compatible with other iPhone model). Before purchasing this battery, please make sure that the your Phone model number matches!
  • 【New Upgraded Capacity】 24300mAh Super capacity compatible with iPhone 15, more power than original standard battery, same size but more capacity and more power life. New 0 Cycle, up to 2000 charging cycles. You will no longer have to worry about your Phone running out of battery quickly!
  • 【Easy Installation】XYIRMCYF Battery for iPhone 15 with complete professional repair tool kits. If you want to replace the battery more easily, we highly recommend you to watch videos about 15 battery replacement on YouTube. Novices can easily install, complete. If you have any questions about the battery, please contact us.
  • 【Safe and Quality】XYIRMCYF 15 Replacement Battery is made of A+ grade high quality batteries. Built-in smart chip to prevent over charging, over discharging and overheating protection, short circuit protection, high safety performance, long service life. Meanwhile, our batteries are tested under strict quality control standards and certified by CE, FCC, UL, PSE, ROHS. Ensures efficient and safe use.
  • 【12 Months, Exchange or Refund Guaranteed】 We place a high value on customer experience. If you have any questions, whether before or after sales, please do not hesitate to contact us. We will do our best to solve it for you.

How to interpret Apple’s cycle-count figures

Apple says batteries in iPhone 14 models and earlier are designed to retain 80% of their original capacity at 500 complete charge cycles, and batteries in iPhone 15 models are designed to retain 80% at 1,000 complete charge cycles. These are design targets under ideal conditions, not mandatory replacement deadlines or guarantees for an individual phone. Actual capacity depends on usage and charging habits. Apple’s guidance and its model-specific battery instructions provide details.

What to do if the reading may be unreliable

iPhone 11 battery-health recalibration

For iPhone 11, 11 Pro, and 11 Pro Max, iOS 14.5 introduced recalibration to address inaccurate battery-health estimates affecting some users. During recalibration, which may take a few weeks of regular charge cycles, the maximum-capacity percentage does not change. If your phone indicates that recalibration is underway, wait for its result before treating the displayed percentage as a final service signal. Apple explains the recalibration process.

Rank #4
Sale
XYIRMCYF 24300mAh Super Capacity Battery Compatible with iPhone 13, 0 Cycle Li-Polymer Replacement Battery for iPhone 13, with Professional Repair Tool Kit
  • 【Compatible Model】This Replacement battery compatible with iPhone 13 (Model: A2482 A2631 A2633 A2634 A2635). (Note: NOT compatible with other iPhone model). Before purchasing this battery, please make sure that the your Phone model number matches!
  • 【New Upgraded Capacity】 24300mAh Super capacity compatible with iPhone 13, more power than original standard battery, same size but more capacity and more power life. New 0 Cycle, up to 2000 charging cycles. You will no longer have to worry about your Phone running out of battery quickly! If you encounter problems such as your phone overheating, restarting, or not working, please check the ribbon cable of the battery to ensure a tight connection and charge and discharge it more than five times within one cycle. It's best to charge it with the original charger.
  • 【Easy Installation】XYIRMCYF Battery for iPhone 13 with complete professional repair tool kits. If you want to replace the battery more easily, we highly recommend you to watch videos about 13 battery replacement on YouTube. Novices can easily install, complete. If you have any questions about the battery, please contact us.
  • 【Safe and Quality】XYIRMCYF 13 Replacement Battery is made of A+ grade high quality batteries. Built-in smart chip to prevent over charging, over discharging and overheating protection, short circuit protection, high safety performance, long service life. Meanwhile, our batteries are tested under strict quality control standards and certified by CE, FCC, UL, PSE, ROHS. Ensures efficient and safe use.
  • 【12 Months, Exchange or Refund Guaranteed】 We place a high value on customer experience. If you have any questions, whether before or after sales, please do not hesitate to contact us. We will do our best to solve it for you.

Battery cannot be verified

If an iPhone XS, XS Max, XR, or later says it cannot verify the battery as genuine, Apple warns that the battery-health details may not be accurate. Have the battery checked by a service provider. Apple’s battery verification guidance explains this warning.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Support on Ko-Fi

How to arrange battery service

Apple’s guidance recommends an Apple Authorized Service Provider when a degraded battery needs replacement. Before booking, check service eligibility for your exact iPhone model and location. Apple says its one-year warranty includes coverage for a defective battery, in addition to any rights under local consumer law; out-of-warranty service is available for a charge. Costs and eligibility depend on model, warranty status, and region, so check the current terms for your location rather than relying on a price for another model or country. Apple’s battery guidance covers service recommendations.

Best Value
LL TRADER Battery Replacement for iPhone 13 Pro Max with Repair Kit
  • [Compatible Model] - This battery is only compatible with iPhone 13 Pro Max, (A2484、A2641、A2644、A2645、A2643) . Please confirm your phone model before purchase. (Check your phone model at the following steps: Settings--General--About--Model Name)
  • [High Capacity] - 24000 mAh high capacity, greater than what the original 13 Pro Max battery has, which means you don't have to charge your phone as frequently as you used to be.
  • [Long Lasting] - Brand new 0 cycle battery, designed and tested to last over 1000 cycles. Charging speed and the power conversion rate increase by 90% with new technology.
  • [Protection for Safety] - Built-in new upgrade smart tech IC chip to prevent over-charging, over-heating, Short-Circuiting, etc for safety.
  • [Package Includes] - Brand new battery replacement for SE 2020, all required tool kits to replace the battery.

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

Leave a Reply

Your email address will not be published. Required fields are marked *

Free tools Windows power users keep installed

One-click scans. No signup required.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.

More from the Wire

  1. Cupertino desk3 min
    Apple Unveils AirPods Max 2: The Upgrade That Should Have Happened Years AgoI have always had a weird relationship with AirPods Max. On one hand, they sounded great. On the other, they felt strangely outdated for…
  2. Cupertino desk4 min
    Apple’s OLED Touch MacBooks Are Coming But the Dynamic Island Is the Real GambleApple is reportedly lining up a major MacBook Pro redesign for late 2026, bringing OLED displays, full touchscreen support, and yes, a Mac version…
  3. Cupertino desk3 min
    Apple’s March 4 Event Could Be About Macs, But It Feels Bigger Than ThatApple has officially invited press to a March 4, 2026 gathering at 9 a.m. ET in New York, with parallel experiences reportedly happening in…
Recommended PC Tool
Recommended PC Tool
PC Slower Than It Used to Be?Free scan - under a minute
Outdated Drivers Are Slowing You DownFree scan - exact matches

Two free Windows tools

One Free Minute Could Fix That PC

Before you go - each of these free tools takes about a minute and tackles what quietly slows a Windows PC down.

Special offer. View Outbyte info, uninstall instructions, EULA, and Privacy Policy.