I have the iPhone X, I feel as if my battery is draining too quickly, is there any app to run to test the level of the battery? Or can Apple runs test over the air so I don’t need to actually go to them to check?
Your iPhone is designed to deliver an experience that is simple and easy to use. This is only possible through a combination of advanced technologies and sophisticated engineering. One important technology area is battery and performance. Batteries are a complex technology, and a number of variables contribute to battery performance and related iPhone performance. All rechargeable batteries are consumables and have a limited lifespan—eventually their capacity and performance decline so that they need to be replaced. As batteries age, it can contribute to changes in iPhone performance. We created this information for those who would like to learn more.
![]() About lithium-ion batteries
iPhone batteries use lithium-ion technology. Compared with older generations of battery technology, lithium-ion batteries charge faster, last longer, and have a higher power density for more battery life in a lighter package. Rechargeable lithium-ion technology currently provides the best technology for your device. Learn more about lithium-ion batteries.
How to maximize battery performance
“Battery life” is the amount of time a device runs before it needs to be recharged. “Battery lifespan” is the amount of time a battery lasts until it needs to be replaced. One factor affecting battery life and lifespan is the mix of things you do with your device. No matter how you use it, there are ways to help. A battery’s lifespan is related to its “chemical age,” which is more than just the passage of time. It includes different factors, such as the number of charge cycles and how it was cared for. Follow these tips to maximize battery performance and help extend battery lifespan. For example, keep iPhone half-charged when it’s stored for the long term. Also avoid charging or leaving iPhone in hot environments, including direct sun exposure, for extended periods of time.
When batteries chemically age
All rechargeable batteries are consumable components that become less effective as they chemically age.
As lithium-ion batteries chemically age, the amount of charge they can hold diminishes, resulting in shorter amounts of time before a device needs to be recharged. This can be referred to as the battery’s maximum capacity—the measure of battery capacity relative to when it was new. In addition, a 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. A battery with a high impedance may be unable to provide sufficient power to the system that needs it. A battery's impedance can increase if a battery has a higher chemical age. A battery’s impedance will temporarily increase at a low state of charge and in a cold temperature environment. When coupled with a higher chemical age, the impedance increase will be more significant. These are characteristics of battery chemistry that are common to all lithium-ion batteries in the industry.
When power is pulled from a battery with a higher level of impedance, the battery’s voltage will drop to a greater degree. Electronic components require a minimum voltage to properly operate. This includes the device’s internal storage, power circuits, and the battery itself. The power management system determines the capability of the battery to supply this power, and manages the loads in order to maintain operations. When the operations can no longer be supported with the full capabilities of the power management system, the system will perform a shutdown to preserve these electronic components. While this shutdown is intentional from the device perspective, it may be unexpected by the user.
Preventing unexpected shutdowns
With a low battery state of charge, a higher chemical age, or colder temperatures, users are more likely to experience unexpected shutdowns. In extreme cases, shutdowns can occur more frequently, thereby rendering the device unreliable or unusable. For iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, and iPhone 7 Plus, iOS dynamically manages performance peaks to prevent the device from unexpectedly shutting down so that the iPhone can still be used. This performance management feature is specific to iPhone and does not apply to any other Apple products. Starting with iOS 12.1, iPhone 8, iPhone 8 Plus, and iPhone X include this feature, but performance management may be less noticeable due to their more advanced hardware and software design.
This performance management works by looking at a combination of the device temperature, battery state of charge, and battery impedance. Only if these variables require it, iOS will dynamically manage the maximum performance of some system components, such as the CPU and GPU, in order to prevent unexpected shutdowns. As a result, the device workloads will self-balance, allowing a smoother distribution of system tasks, rather than larger, quick spikes of performance all at once. In some cases, a user may not notice any differences in daily device performance. The level of perceived change depends on how much performance management is required for a particular device.
In cases that require more extreme forms of this performance management, the user may notice effects such as:
Many key areas are not impacted by this performance management feature. Some of these include:
For a low battery state of charge and colder temperatures, performance management changes are temporary. If a device battery has chemically aged far enough, performance management changes may be more lasting. This is because all rechargeable batteries are consumables and have a limited lifespan, eventually needing to be replaced. If you are impacted by this and would like to improve your device performance, replacing your device battery can help.
For iOS 11.3 and later
iOS 11.3 and later improve this performance management feature by periodically assessing the level of performance management necessary to avoid unexpected shutdowns. If the battery health is able to support the observed peak power requirements, the amount of performance management will be lowered. If an unexpected shutdown occurs again, then performance management will increase. This assessment is ongoing, allowing more adaptive performance management.
iPhone 8 and later use a more advanced hardware and software design that provides a more accurate estimation of both power needs and the battery’s power capability to maximize overall system performance. This allows a different performance management system that more precisely allows iOS to anticipate and avoid an unexpected shutdown. Sketching app for mac os. As a result, the impacts of performance management may be less noticeable on iPhone 8 and later. Over time, the rechargeable batteries in all iPhone models will diminish in their capacity and peak performance and will eventually need to be replaced.
Battery Health
For iPhone 6 and later, iOS 11.3 and later add new features to show battery health and recommend if a battery needs to be replaced. These can be found in Settings > Battery > Battery Health.
Additionally, users can see if the performance management feature that dynamically manages maximum performance to prevent unexpected shutdowns is on and can choose to turn it off. This feature is enabled only after an unexpected shutdown first occurs on a device with a battery that has diminished ability to deliver maximum instantaneous power. This feature applies to iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, and iPhone 7 Plus. Starting with iOS 12.1, iPhone 8, iPhone 8 Plus, and iPhone X include this feature, but performance management may be less noticeable due to their more advanced hardware and software design.
(Note: Devices updating from iOS 11.2.6 or earlier will initially have performance management disabled; it will be reenabled if the device subsequently experiences an unexpected shutdown.)
All iPhone models include fundamental performance management to ensure that the battery and overall system operates as designed and internal components are protected. This includes behavior in hot or cold temperatures, as well as internal voltage management. This type of performance management is required for safety and expected function, and cannot be turned off.
Your battery's maximum capacity
The Battery Health screen includes information on maximum battery capacity and peak performance capability.
Maximum battery capacity measures the device battery capacity relative to when it was new. A battery will have lower capacity as the battery chemically ages which may result in fewer hours of usage between charges. https://datingsite650.weebly.com/blog/bourne-conspiracy-pc-game. Depending upon the length of time between when the iPhone was made and when it is activated, your battery capacity may show as slightly less than 100%.
A normal battery is designed to retain up to 80% of its original capacity at 500 complete charge cycles when operating under normal conditions. The one-year warranty includes service coverage for a defective battery. If it is out of warranty, Apple offers battery service for a charge. Learn more about charge cycles.
As your battery health degrades, so can its ability to deliver peak performance. The Battery Health screen includes a section for Peak Performance Capability where the following messages may appear.
Performance is normal
When the battery condition can support normal peak performance and does not have the performance management features applied, you'll see this message:
Your battery is currently supporting normal peak performance.
Performance management applied
When the performance management features have been applied, you'll see this message:
This iPhone has experienced an unexpected shutdown because the battery was unable to deliver the necessary peak power. Performance management has been applied to help prevent this from happening again. Disable…
Note that if you disable performance management, you can’t turn it back on. It will be turned on again automatically if an unexpected shutdown occurs. The option to disable will also be available.
Battery health unknown
If iOS is unable to determine the device battery health, you'll see this message: https://renewperformance525.weebly.com/skype-for-mac-app-store.html.
This iPhone is unable to determine battery health. An Apple Authorized Service Provider can service the battery. More about service options…
This may be due to having an improperly installed battery or an unknown battery part. Best to do list app for mac and ipad.
Coconut Battery App For Macbook ProPerformance management turned off
If you disable the applied performance management feature, you'll see this message: https://renewperformance525.weebly.com/air-copy-app-for-mac.html.
This iPhone has experienced an unexpected shutdown because the battery was unable to deliver the necessary peak power. You have manually disabled performance management protections.
If the device experiences another unexpected shutdown, the performance management features will be re-applied. The option to disable will also be available.
Battery health degraded
If battery health has degraded significantly, the below message will also appear:
Your battery’s health is significantly degraded. An Apple Authorized Service Provider can replace the battery to restore full performance and capacity. More about service options…
This message does not indicate a safety issue. Your battery can still be used. However, you may be experiencing more noticeable battery and performance issues. A new replacement battery will improve your experience.
Important Battery Message
If you see the message below, it means the battery in your iPhone is unable to be verified. This message applies to iPhone XS, iPhone XS Max, and iPhone XR.
Unable to verify this iPhone has a genuine Apple battery. Health information not available for this battery. More info…
Reported battery health information is not available. To have your battery checked, contact an Apple Authorized Service Provider. More about service options.
Getting further assistance
If your device performance has been impacted by an aged battery and you would like to get help with a battery replacement, contact Apple Support for service options.
Learn more about battery service and recycling.
iOS includes several useful tools for displaying how much battery life your iPhone has left, as well as which apps are consuming the most of your battery. However, none of these tools actually tell you anything about your battery’s long-term health, which is just as important.
Battery Health vs. Battery Life
Battery health is different than battery life. Battery life determines how long your battery lasts on a single charge, but your battery health determines how much your battery life diminishes over time. After a year, your battery life won’t be as long as when the phone was new, and it will continue to degrade as the years go by.
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If you’ve ever had to constantly recharge your older phone because the battery would only last a couple of hours, then you know how annoying this is. Compounding the problem is that most mobile phones don’t have a user-accessible battery that can be swapped out with a new, fresh battery.
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Fortunately, there are two excellent metrics you can check to get a big picture view of your battery’s health. The first is the maximum remaining capacity (the total charge your battery can hold). The second is the total number of charge cycles the battery has gone through.
Real world use always chips away at the total capacity over time, but a healthy battery will have only a few percents shaved off its original capacity. Furthermore, lithium-ion batteries (those found in pretty much every smartphone) degrade a tiny bit with each charge cycle. Apple says they design their iPhone batteries so that the battery should retain roughly 80% of its capacity after 500 charges.
Jwplayer license. Battery health data is not available in the iOS settings, so you have to take some extra measures to get this information, and there are several ways to do it.
For iOS 11.3 & Up Users, Look In the Settings
For older iPhone users that aren’t able to update their devices to at least iOS 11.3, skip on to the following sections below, but if you’re currently running iOS 11.3 and have an iPhone 6 or newer, you can look up the battery health right in the settings.
Battery App For Macbook Air
Open up the settings app, and then navigate to Battery > Battery Health. From there, you’ll see a percentage next to “Maximum Capacity,” which gives you a good idea of whether or not your iPhone’s battery is in good health—the higher the percentage, the better.
Below that, you’ll see how your iPhone is performing based on the battery health in the small text below “Peak Performance Capability.” For batteries in good shape, you’ll probably see “Your battery is currently supporting normal peak performance.” Otherwise, you might see a different message if your battery is degraded at all.
Ask Apple Support
In years past, if you wanted to know the battery health status of your iPhone, you’d have to take it to an Apple Store and let them run a diagnostic test. However, this kind of thing can be done remotely, too. Thus, it’s perhaps the best way to get this kind of info.
There are several ways you can get a hold of Apple support. You can visit their support website and talk to someone on the phone or through chat, or you can do what I did and just tweet at them.
Best Battery App For Macbook Air
Basically, they’ll tell you to DM them, and you’ll give them your iPhone’s serial number and iOS version. They’ll then approve you for a diagnostics test which you’ll access in the settings app. Once it’s done running, you’ll let the support rep know, and then they’ll let you know about the status of your battery’s health. Pretty cool!
The only downside is that Apple wouldn’t provide me with a quantifiable number as far as the health of the battery, only saying that it “appears to be in perfect health”.
If you want a second opinion, here are some other methods for checking your iPhone’s battery health. Keep in mind that having Apple do it is probably the best way, even if they’re kind of vague with the results.
Get More Specific Metrics with Battery Life Doctor
There are quite a few apps out there that will check the status of your battery right from your phone, but we found one that is pleasantly simple, free, and available in the App Store.
If you can put up with some annoying ads, Battery Life Doctor can give you a straightforward, no-nonsense display of your iPhone’s battery health status. There are several different sections in the app, but the one you’ll want to focus on is “Battery Life”. Cheap antares auto tune software. Tap on “Details” to get more info about your battery’s health status.
On this screen, the first thing you’ll notice is the big graphic, which tells you the overall health of your battery, either by saying “Perfect,” “Good,” “Bad,” etc. You’ll also see “Wear Level” followed by a percentage. This is how much your battery has degraded. So if it reads 13%, then the total charge capacity that the battery can hold is 87% of its original maximum (a brand new battery will be 100%).
Further below, it will show you a few things, including how much juice is left on the current charge (which your iPhone provides you with anyway), the charge capacity (as mentioned above), the battery voltage, and whether or not the phone is currently charging.
Check the Health from Your Computer with CoconutBattery or iBackupBot
Battery health apps come and go, so if Battery Doctor isn’t available, there’s still some hope of self-diagnosing your iPhone’s battery health.
For Mac users, there’s a free utility called CoconutBattery that not only provides information about your MacBook’s battery but your iPhone (or iPad) as well. Just plug your iPhone into your Mac, open up CoconutBattery, and then click on “iOS Device” at the top.
From there, you’ll see the current charge status, as well as the “Design Capacity,” which tells you the overall status of your iPhone battery’s health. It didn’t give me the same reading as the Battery Life Doctor app did, but it was very close.
For Windows users, there’s iBackupBot. It costs $35, but there’s a 7-day free trial, which should give you plenty of time to get a quick peek at your iPhone’s battery health.
Mac Os Battery Health
Again, you’ll plug your iPhone into your computer, open the app, and let it sit for a moment as it builds a profile of your device. Look on the left-hand side for the “Devices” menu and select your device, as seen below.
In the information panel about your device, click on the “More Information” link.
At the top of the screen, you’ll find the information you’re looking for. There you can see the “CycleCount” to see how many battery charge cycles the device has gone through. You can also see the initial capacity (designated by “DesignCapacity”) and the maximum charge the battery can currently hold (designated by “FullChargeCapacity”). So in this case, the battery has degraded by about 50 mAh (or about 3%).
Apple App For Battery Life
If you’re disheartened that your battery isn’t in such great health or is a little long in the charging-cycle tooth, Apple will replace iPhone batteries for a fee if you’re not quite ready to upgrade to a new iPhone. How to open a damaged app on mac. However, be sure to know what the signs are for a bad battery before you fork over some cash.
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