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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, this 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 maximise battery performance
'Battery life' is the amount of time a device runs for 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 maximise 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 correctly, 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 for 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 (1st generation), 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; iPhone XS, iPhone XS Max and iPhone XR include this feature starting with iOS 13.1. The effects of performance management on these newer models 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's 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.
Adobe zii patcher 4 3 64. In cases that require more extreme forms of this performance management, the user may notice effects such as:
- Longer app launch times
- Lower frame rates while scrolling
- Backlight dimming (which can be overridden in Control Centre)
- Lower speaker volume by up to -3 dB
- Gradual frame rate reductions in some apps
- During the most extreme cases, the camera flash will be disabled as visible in the camera UI
- Apps refreshing in background may require reloading upon launch
Many key areas are not affected by this performance management feature. Some of these include:
- Cellular call quality and networking throughput performance
- Captured photo and video quality
- GPS performance
- Location accuracy
- Sensors such as gyroscope, accelerometer, barometer
- Apple Pay
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 affected 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 maximise overall system performance. This allows a different performance management system that more precisely allows iOS to anticipate and avoid an unexpected shutdown. 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 only enabled 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 (1st generation), iPhone 7 and iPhone 7 Plus. Starting with iOS 12.1, iPhone 8, iPhone 8 Plus and iPhone X include this feature; iPhone XS, iPhone XS Max and iPhone XR include this feature starting with iOS 13.1. The effects of performance management on these newer models 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 re-enabled 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 behaviour 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. 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:
This iPhone is unable to determine battery health. An Apple Authorised Service Provider can service the battery. More about service options…
Weather dock 4 5 0 m. This may be due to having an improperly installed battery or an unknown battery part.
Performance management turned off
If you disable the applied performance management feature, you'll see this message:
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:
Battery Health 3 1 0 195 Percent
Your battery's health is significantly degraded. An Apple Authorised 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 below message, it means the battery in your iPhone is unable to be verified. This message applies to iPhone XS, iPhone XS Max, iPhone XR and later.
Unable to verify this iPhone has a genuine Apple battery. Health information not available for this battery.Learn more..
Reported battery health information is not available. To have your battery checked, contact an Apple Authorised Service Provider. More about service options.
Find out more about this message as it appears on iPhone 11 and iPhone 11 Pro.
Getting further assistance
Numbers 3 6 2 download free. If your device performance has been affected by an aged battery and you would like to get help with a battery replacement, contact Apple Support for service options.
Find out more about battery service and recycling.
| BatteryInfoView v1.23 Copyright (c) 2011 - 2017 Nir Sofer |
See Also
- NK2Edit - Edit, merge and fix the AutoComplete files (.NK2) of Microsoft Outlook.
- DevManView - Alternative to device manager of Windows.
- DriverView - List all device drivers currently loaded on your Windows
Description
BatteryInfoView is a small utility for laptops and netbook computers that displaysthe current status and information about your battery.The displayed battery information includes the battery name, manufacture name, serial number, manufacture date, power state (charging/discharging),current battery capacity, full charged capacity, voltage, charge/discharge rate, and more..BatteryInfoView also provides a log window, which adds a new log line containing the battery status every 30 seconds orany other time interval that you choose.
System Requirements And Limitations
- This utility works on any version of Windows, starting from windows 2000 and up to Windows 10.
- Some information, like serial number and manufacture date is only displayed if the battery provides this information.
Versions History
- Version 1.23:
- Changed the 'Battery Wear Level' caption to 'Battery Health', which is the right term to use (Battery Wear Level is the opposite).
- Version 1.22:
- Added option to display the battery capacity in mAh (milliampere-hour). This option works only if the voltage of the battery is available.
- Version 1.21:
- Added 'Always On Top' option.
- Fixed bug: BatteryInfoView failed to remember the last size/position of the main window if it was not located in the primary monitor.
- Version 1.20:
- Added 'Automatically Scroll Down On New Log Item' option.
- Added option to automatically save every new log line into a file, in comma-delimited or tab-delimited format (You can activate this feature in the 'Advanced Options' window).
- Version 1.16:
- Fixed issue: The properties and the options windows opened in the wrong monitor, on multi-monitors system.
- Version 1.15:
- Added 'Start As Hidden' option. When this option and 'Put Icon On Tray' option are turned on, the main window of BatteryInfoView will be invisible on start.
- Version 1.13:
- Added thousands separator to the 'Charge/Discharge Rate' value.
- Version 1.12:
- Added more options to control the event types added to the battery log. (In the 'Advanced Options' window)
- Version 1.11:
- Added 'Mark Odd/Even Rows' option, under the View menu. When it's turned on, the odd and even rows are displayed in different color, to make it easier to read a single line.
- Version 1.10:
- Added command-line options for saving the battery information into a file.
- Version 1.05:
- Added 'Battery Wear Level' field, which is calculated according to the Full Charged Capacity and Designed Capacity values of the battery.
- Version 1.00 - First release.
Using BatteryInfoView
BatteryInfoView doesn't require any installation process or additional dll files.In order to start using it, simply run the executable file - BatteryInfoView.exeThe main window of BatteryInfoView provides 2 view modes:
- Battery Information:(Press F7 to switch into this mode)
Displays general status and information about your battery.The information is updated every 10 seconds by default, and you change this update ratein the 'Advanced Options' window (F9). There are 4 calculated fields that are updatedonly every 30 seconds or more. - Battery Log:(Press F8 to switch into this mode)
In this window, a new log containing the status of the battery (Power State,% Capacity, and so on) is added every 30 seconds. You can change the log interval in the 'Advanced Options' window (F9).A new log line is also added when the computer is suspended (standby/hibernate) and resumed,so you can easily find out in which rate the battery is discharged while the computer is on standby mode.
In both view modes, you can export the battery information into csv/tab-delimited/html/xml file,by using the 'Save Selected Items' option (Ctrl+S).You can also copy the information into the clipboard, and then paste it into Excelor other spreadsheet application.
Columns Description
- Battery Name:The name of your battery.
- Manufacture Name:The name of the company that manufactured the battery.
- Serial Number:The serial number of your battery. This value is displayed only if the battery supports it.
- Manufacture Date:The date that the battery was manufactured. This value is displayed only if the battery supports it.
- Power State:The current power state of the battery: Charging, Discharging, AC Power, or Critical.
- Current Capacity (in %):The current % capacity, which is the same capacity value displayed by Windows.
- Current Capacity Value:The current absolute capacity, which is usually displayed in mWh units (milliwatt-hours).
- Full Charged Capacity:The capacity of the battery, when it's fully charged. This value is usually displayed in mWh units (milliwatt-hours).
- Designed Capacity:The full capacity of the battery, when it's completely new.
- Battery Health:Health the battery, in %
The Health of a new battery should be around 100%, and it gradually decreases. This value is calculated according to the 'Designed Capacity' and 'Full Charged Capacity' values. - Voltage:Current battery voltage across the battery terminals, in millivolts.
- Charge/Discharge Rate:The current charge or discharge rate, usually displayed in milliwatts.
- Chemistry:Battery's chemistry: Lithium Ion, Nickel Cadmium, Nickel Metal Hydride, and so on.
- Low Battery Capacity:Manufacturer�s suggestion of a capacity, in mWh, at which a low battery alert should occur.
- Number of charge/discharge cycles:Number of charge/discharge cycles the battery has experienced.This value is displayed only if the battery supports it.
- Remaining battery time for the current activity (Estimated):The remaining battery time according to the current activity.This value is calculated according to the change of the 'Current Capacity Value' in the last 30 seconds.
- Full battery time for the current activity (Estimated):The time that the battery can hold when it's fully charged, according to the current activity. This value is calculated according to the change of the 'Current Capacity Value' in the last 30 seconds.
- Remaining time for charging the battery (Estimated):The remaining time for charging the battery.This value is calculated according to the change of the 'Current Capacity Value' in the last 30 seconds.
- Total time for charging the battery (Estimated):The total time that you need to wait in order to charge the battery.(Displayed only when the battery is in 'charging' status)
This value is calculated according to the change of the 'Current Capacity Value' in the last 30 seconds.
Command-Line Options
| /stab | Save the battery information into a tab-delimited text file. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| /stabular | Save the battery information into a tabular text file. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| /sverhtml | Save the battery information into HTML file (Vertical). | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Battery Health 3 1 0 195 Kg
LicenseThis utility is released as freeware. You are allowed to freely distribute this utility via floppy disk, CD-ROM, Internet, or in any other way, as long as you don't charge anything for this and you don'tsell it or distribute it as a part of commercial product. If you distribute this utility, you must include all files inthe distribution package, without any modification !DisclaimerThe software is provided 'AS IS' without any warranty, either expressed or implied,including, but not limited to, the implied warranties of merchantability and fitnessfor a particular purpose. The author will not be liable for any special, incidental,consequential or indirect damages due to loss of data or any other reason.FeedbackIf you have any problem, suggestion, comment, or you found a bug in my utility, you can send a message to nirsofer@yahoo.comSection 195.1BatteryInfoView is also available in other languages. In order to change the language of BatteryInfoView, download the appropriate language zip file, extract the 'batteryinfoview_lng.ini', and put it in the same folder that you Installed BatteryInfoView utility. Battery Health 3 1 0 195 F
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