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Bad iPhone Battery Symptoms & Quick Fixes

Welcome to our guide on bad iPhone battery symptoms and quick fixes. At iFixScreens, we understand the frustration of dealing with a bad iPhone battery. It can disrupt our daily routine and leave us constantly searching for a charger. Luckily, there are quick fixes available to improve iPhone battery performance and extend its lifespan.

Having a properly functioning battery is crucial for iPhone users. Our smartphones have become an integral part of our lives, and we rely on them for communication, entertainment, and productivity. A bad iPhone battery can hamper our ability to stay connected and get things done.

In this guide, we will explore the symptoms of a bad iPhone battery and provide you with quick fixes to address these issues. We will also share tips and tricks from our experts at iFixScreens to help you extend your iPhone's battery life and ensure optimal performance.

Whether you're experiencing unexpected shutdowns, slow performance, or rapid battery drain, we have you covered. Let's dive into this guide and discover how to improve your iPhone battery's performance and get the most out of your device.

Bad Iphone Battery Symptoms &Amp; Quick Fixes

Key Takeaways:

  • Identify common signs of a bad iPhone battery, such as unexpected shutdowns and performance throttling.

  • Learn how to diagnose iPhone battery issues using the Battery Health feature in iPhone settings.

  • Implement preventive measures to extend iPhone battery life, such as optimal charging practices and temperature management.

  • Know when it's time to consider an iPhone battery replacement based on battery health indicators.

  • Discover practical quick fixes to address common iPhone battery issues and maximize performance.

Identifying Common Signs of a Bad iPhone Battery

Identifying Common Signs Of A Bad Iphone Battery

Being able to identify signs of a bad iPhone battery is crucial for every iPhone user. A malfunctioning battery can cause a range of issues that disrupt the overall user experience. In this section, we will explore two common signs of a bad iPhone battery and discuss their impact on the device's performance.

Unexpected Shutdowns and Calibration Issues:

  1. One of the first signs of a bad iPhone battery is experiencing unexpected shutdowns and calibration issues. If your iPhone suddenly powers off even though the battery percentage is not critically low, it may be a clear indication of a faulty battery.
  2. To address this issue, you can try recalibrating your iPhone battery. To do this, fully charge your iPhone and let it drain completely until it shuts down. Then, charge it back to 100% without interruption. This process will help your iPhone recalibrate its battery level and improve its accuracy. 

Performance Throttling and Slower Operation:

Another common sign of a bad iPhone battery is performance throttling and slower operation. As batteries age, they may no longer be able to provide the necessary power to support the device's demands. This can result in slower performance, lagging apps, and overall reduced efficiency. 

If you notice a significant decline in your iPhone's speed and responsiveness, it might be time to consider replacing the battery. A new battery can help restore your iPhone's performance and bring back its optimal speed.

Identifying and addressing these common signs of a bad iPhone battery is essential for maintaining a smooth and enjoyable user experience. In the next section, we will discuss how to diagnose iPhone battery issues to further understand and resolve any potential problems.

How to Diagnose iPhone Battery Issues

Identifying Common Signs Of A Bad Iphone Battery

Diagnosing iPhone battery issues is crucial for maintaining optimal performance and extending battery life. Here, we will provide step-by-step instructions on how to check your battery's health and performance, access the Battery Health feature in iPhone settings, and analyze battery data to identify potential issues.

Step 1: Check Battery Health

To begin the diagnostic process, navigate to your iPhone settings and access the Battery Health feature. This feature provides valuable information about your battery's capacity and peak performance capability.

Step 2: Analyze Battery Performance Data

Once you have accessed the Battery Health feature, take the time to analyze the battery's performance data. Look for any irregularities, such as sudden drops in capacity or unexpected spikes in usage. This data can provide insights into potential battery issues and help you determine the appropriate course of action.

Step 3: Monitor Battery Capacity

It is essential to monitor your battery's capacity over time. Battery capacity indicates the maximum charge your iPhone battery can hold, and a decrease in capacity may indicate deterioration. By monitoring capacity regularly, you can keep track of any significant changes and address potential issues promptly.

Step 4: Track Peak Performance Capability

The Battery Health feature also provides information on your battery's peak performance capability. This metric measures the battery's ability to deliver maximum power when needed. If you notice a decline in peak performance capability, it could be a sign of a faulty battery that requires attention.

By following these step-by-step instructions and utilizing the Battery Health feature, you can effectively diagnose iPhone battery issues and take appropriate measures to ensure optimal performance and longevity.

Preventive Measures to Extend iPhone Battery Life

Preventive Measures To Extend Iphone Battery Life

When it comes to maximizing the lifespan of your iPhone battery, taking preventive measures is key. By implementing simple practices, you can significantly extend the battery life of your device. In this section, we will discuss two essential preventive measures: maintaining optimal charging practices and avoiding exposure to extreme temperatures. Let's dive in.

Optimal Charging Practices

Proper charging habits play a crucial role in preserving the battery health of your iPhone. Follow these tips:

  • Avoid overcharging your iPhone. Once it reaches 100%, unplug it from the charger to prevent unnecessary stress on the battery.

  • Use certified chargers and cables. Low-quality chargers can damage your battery and lead to reduced performance.

  • Avoid using your iPhone while it's charging. This can generate heat and impact battery performance.

  • Consider keeping your iPhone between 20% and 80% charge. Frequent shallow discharges and charges can help prolong battery life.

Avoiding Extreme Temperatures

Extreme temperatures can have a detrimental effect on your iPhone battery. Follow these guidelines to protect your battery:

  • Avoid exposing your iPhone to direct sunlight or extreme heat. High temperatures can degrade battery capacity over time.

  • Do not leave your iPhone in a freezing environment for an extended period. Extreme cold can temporarily disrupt battery function.

  • If necessary, remove your iPhone from its case before charging. Cases can trap heat, affecting the battery's temperature.

  • Avoid storing your iPhone in a hot car or exposing it to prolonged periods of direct sunlight.

By adopting these preventive measures, you can ensure that your iPhone battery stays in optimal condition, allowing you to make the most of your device's battery life. Let's continue to the next section to learn about when it's time to consider an iPhone battery replacement.

When to Consider an iPhone Battery Replacement

When To Consider An Iphone Battery Replacement

Knowing when to consider an iPhone battery replacement is crucial for ensuring optimal device performance. Checking the battery health status is an essential step in making this decision. Here, we provide step-by-step instructions on how to access battery health information on your iPhone. Additionally, we discuss Apple's battery replacement indicators, which include maximum capacity and performance management features, and explain their significance in determining the need for a battery replacement.

  1. Step 1: Open the Settings app on your iPhone.

  2. Step 2: Scroll down and tap on "Battery".

  3. Step 3: Tap on "Battery Health".

Check Iphone Battery Health

By following these steps, you can easily access your iPhone's battery health information to determine its current condition. Apple provides battery replacement indicators that can help you make an informed decision about replacing your iPhone battery.

The maximum capacity indicator shows the percentage of your battery's original capacity that it can currently hold. A lower maximum capacity percentage indicates that your battery has degraded over time and may require a replacement.

The performance management feature, introduced in iOS 11.3, allows you to check whether your iPhone's performance is being managed to prevent unexpected shutdowns. If your iPhone experiences unexpected shutdowns due to an old or degraded battery, this feature will be enabled, and you may consider replacing the battery to restore optimal performance.

Overall, monitoring battery health indicators such as maximum capacity and performance management can help you assess whether it's time to replace your iPhone battery and ensure that your device operates smoothly.

Practical Quick Fixes for Your iPhone Battery

If you're experiencing battery issues with your iPhone, there are several practical quick fixes you can try before considering a battery replacement. These simple tips can help optimize your iPhone battery performance and extend its overall lifespan. Let's take a look at some effective solutions:

1. Optimize App Usage: Close unnecessary apps running in the background to reduce battery drain. Apps that constantly refresh or use location services can significantly impact battery life. Limiting their usage can help preserve battery power.

2. Disable Unnecessary Background Activities: Some apps continue to run in the background even when not actively being used. Disable background app refresh and automatic updates for apps that don't require real-time notifications or updates. This can help conserve battery power.

3. Utilize Low Power Mode: Enable Low Power Mode to automatically adjust settings and reduce battery consumption. This mode disables or reduces certain features, such as email fetch, background app refresh, and visual effects, to extend battery life.

To better understand and implement these practical quick fixes, refer to the following table:
Utilize Low Power Mode

4. Adjust Screen Brightness: Lowering the screen brightness can significantly reduce battery usage. Dimming the display to an optimal level can help conserve power without compromising visibility.

5. Manage Location Settings: Limiting location access for apps that don't require it can help minimize battery drain. Disabling unnecessary location services and opting for manual settings can help preserve battery life.

6. Disable Push Email: Instead of receiving push notifications for emails, manually fetch them at specific intervals. This reduces the frequency of background refreshes and helps conserve battery power.

7. Use Wi-Fi Instead of Cellular Data: When available, connect to Wi-Fi networks instead of relying solely on cellular data. Wi-Fi consumes less power compared to mobile data, resulting in improved battery performance.

8. Reset Network Settings: In some cases, resetting network settings can resolve battery-related issues caused by connectivity problems. This resets all network-related settings, including Wi-Fi, cellular, and VPN, which might help improve battery performance.

Quick Fix


Optimize App Usage

Close unnecessary apps running in the background and limit the usage of resource-intensive apps.

Disable Unnecessary Background Activities

Turn off background app refresh and automatic updates for apps that don't require real-time notifications.

Utilize Low Power Mode

Enable Low Power Mode to reduce battery consumption by disabling or reducing certain non-essential features.

Adjust Screen Brightness

Dim the screen brightness to an optimal level to conserve battery power.

Manage Location Settings

Limit location access for apps that don't need it and opt for manual location settings.

Disable Push Email

Manually fetch emails instead of receiving push notifications to reduce background refreshes.

Use Wi-Fi Instead of Cellular Data

Connect to Wi-Fi networks whenever possible to conserve battery power.

Reset Network Settings

Reset all network-related settings, including Wi-Fi, cellular, and VPN, to potentially resolve battery-related issues.

Implementing these practical quick fixes can help improve your iPhone's battery life and ensure a smoother user experience. However, if you continue to experience persistent battery issues, it may be advisable to consult a professional for further assistance.

Understanding How iPhone Batteries Age Over Time

Understanding How Iphone Batteries Age Over Time

As iPhone users, it's essential to understand how our device's batteries age over time. By gaining knowledge about battery aging, we can better manage our battery life and ensure optimal performance. In this section, we will explore the natural aging process of iPhone batteries and delve into the factors that impact their longevity.

One key aspect of battery aging is the concept of charge cycles. A charge cycle refers to the complete discharge and recharge of a battery's capacity. As we use our iPhones and recharge them over time, the number of charge cycles increases, gradually impacting the battery's health. Understanding the impact of charge cycles is crucial in comprehending battery longevity and the gradual degradation of performance.

Lithium-ion technology, which is used in iPhone batteries, also plays a significant role in battery aging. While lithium-ion batteries offer numerous advantages, they are not immune to chemical aging effects. Over time, chemical reactions within the battery's cells lead to the gradual loss of capacity, resulting in decreased battery life.

Being informed about battery aging empowers us to make educated decisions to prolong our iPhone's battery life. By practicing good charging habits, such as avoiding excessive charging and using certified chargers, we can minimize the negative effects of battery aging. Additionally, staying updated with iOS software releases that address battery performance can further optimize our device's battery life.

Overall, understanding how iPhone batteries age over time is crucial for managing and optimizing battery life. By being aware of the impact of charge cycles and chemical aging, we can take proactive measures to extend our iPhone's battery longevity and enhance our overall device experience.

Bad iPhone Battery: How Heat Affects Performance and Longevity

Bad Iphone Battery: How Heat Affects Performance And Longevity

Heat is a major factor that can significantly impact the performance and longevity of an iPhone battery. Excessive heat exposure can cause multiple issues, including decreased battery capacity and overall battery health.

When an iPhone is exposed to high temperatures, the battery's internal components can become stressed, leading to faster degradation and reduced capacity. This means that the battery will not hold a charge as well as it should, resulting in shorter battery life and more frequent recharging.

To avoid excessive heat exposure, it is important to never leave your iPhone in a hot car or under direct sunlight for extended periods. Additionally, using certified chargers and cables can help manage heat generation during the charging process, as uncertified or counterfeit accessories can cause overheating.

It is also recommended to avoid wireless charging, as this method can generate heat that may negatively impact the battery. Instead, opt for wired charging using an Apple-certified charger for better heat management.

Proper heat management is crucial for maintaining a healthy iPhone battery and maximizing its longevity. By taking precautions to protect your iPhone from excessive heat, you can ensure that your device's battery performs optimally and lasts longer.

Maximizing Battery Performance with iOS Settings

Maximizing Battery Performance With Ios Settings

When it comes to maximizing the battery performance of your iPhone, optimizing the iOS settings plays a crucial role. By making a few adjustments, you can extend your battery life and enhance the overall user experience.

Adjusting screen brightness: One of the simplest yet effective ways to conserve battery power is by adjusting the screen brightness. Lowering the brightness level can significantly reduce battery consumption, especially when you are in low-light environments.

Enabling background app refresh: Background app refresh allows apps to update their content even when they are not actively being used. While this feature can enhance the user experience, it can also drain your battery. Consider disabling or limiting background app refresh for certain apps to save battery power.

Enabling low power mode: iOS features a built-in low power mode that optimizes battery usage by temporarily reducing power-hungry features. Enabling low power mode can extend your battery life when you're running low on charge and need to make it last longer.

Managing location settings: Location services can be a significant drain on your battery, especially if apps are constantly accessing your location. Review and manage your location settings, allowing only necessary apps to access your location data. This can help conserve battery power and improve overall performance.

Keeping iOS up to date: Apple frequently releases iOS updates that include optimizations and improvements to battery performance. Regularly updating your iOS ensures that you have the latest enhancements and fixes, leading to better battery performance.

By customizing iOS settings to prioritize battery efficiency, you can enjoy longer battery life and make the most out of your iPhone. Adjusting screen brightness, enabling or disabling background app refresh, using low power mode, managing location settings, and keeping your iOS up to date are simple yet effective ways to maximize battery performance.

Troubleshooting Tips for Sudden iPhone Battery Drain

Troubleshooting Tips For Sudden Iphone Battery Drain

If you're experiencing sudden battery drain on your iPhone, don't panic! We are here to help you troubleshoot the issue and find a solution. Follow these tips to identify and fix the problem:

  1. Identify Resource-Intensive Apps: Some apps may consume more battery power than others. Go to your iPhone's Settings and navigate to Battery. Here, you'll find a list of apps that have been using the most battery. Identify any resource-intensive apps and consider limiting their usage or closing them when not in use.

  2. Resetting to Factory Settings: When all else fails, resetting your iPhone to factory settings can help resolve battery drain issues caused by software glitches. Keep in mind that this will erase all your data, so make sure to back up your device beforehand. To reset your iPhone, go to Settings, tap General, then Reset, and select Erase All Content and Settings.

  3. Regularly Check Battery Usage Data: Monitoring your battery usage data can give you insights into which apps or features are causing excessive drain. To access this information, go to Settings, tap Battery, and scroll down to Battery Usage. Pay attention to any apps that are using a significant amount of power and take appropriate action.

By following these troubleshooting tips, you can identify the cause of sudden battery drain on your iPhone and take the necessary steps to resolve the issue. Remember to reach out to us if you need further assistance.


In conclusion, recognizing bad iPhone battery symptoms is crucial for maintaining a seamless user experience and maximizing the longevity of your device. By understanding the signs and taking quick action, you can address these issues before they escalate.

If you're facing any iPhone battery problems, iFixScreens is here to help. Our team of experts is dedicated to providing top-quality repair services, ensuring that your iPhone battery concerns are resolved efficiently and effectively.

Remember, proactive measures are key to maintaining and improving iPhone battery health. Implementing the preventive measures discussed in this article, such as optimizing charging practices and avoiding extreme temperatures, can significantly extend your battery life.

Take control of your iPhone battery and enjoy uninterrupted usage by staying informed and utilizing the quick fixes, diagnostic tools, and troubleshooting tips provided. Trust iFixScreens to be your reliable partner in keeping your iPhone running smoothly.


Q: What are the common signs of a bad iPhone battery?

A: Common signs of a bad iPhone battery include unexpected shutdowns and calibration issues, as well as performance throttling and slower operation.

Q: When do unexpected shutdowns occur and how can I recalibrate my iPhone?

A: Unexpected shutdowns often happen when your iPhone battery is unable to deliver power consistently. To recalibrate your iPhone, fully charge it and then use it until it shuts down due to low battery. Connect it to a charger and let it charge to 100% without interruption. This can help recalibrate the battery gauge in your device.

Q: How does performance throttling affect the speed and efficiency of my iPhone?

A: Performance throttling is a feature introduced by Apple to prevent unexpected shutdowns in older iPhones with degraded batteries. It slows down the device's performance to conserve battery power. As a result, your iPhone may operate slower and take longer to load apps or perform tasks.

Q: How can I check my iPhone's battery health and performance?

A: To check your iPhone's battery health, go to Settings > Battery > Battery Health. Here, you can see important information such as your battery's maximum capacity and whether any performance management features are applied.

Q: What preventive measures can I take to extend my iPhone battery life?

A: You can extend your iPhone battery life by maintaining optimal charging practices, such as avoiding overcharging and using certified chargers. It's also important to avoid exposing your iPhone to extreme temperatures, as heat can affect battery performance. Taking these measures can help prolong your battery life.

Q: How do I know when to replace my iPhone battery?

A: To determine if you need to replace your iPhone battery, check its battery health status. You can access this information in Settings > Battery > Battery Health. Maximum capacity and performance management indicators will help you decide if a battery replacement is necessary.

Q: Are there quick fixes for common iPhone battery issues?

A: Yes, there are several quick fixes you can try to address common iPhone battery issues. These include optimizing app usage, disabling unnecessary background activities, using low power mode, adjusting screen brightness, managing location settings, disabling push email, and updating your iOS software.

Q: How does the natural aging process affect iPhone batteries?

A: iPhone batteries naturally age over time due to the chemical reactions that occur during charge cycles. As batteries age, their capacity to hold a charge diminishes, causing reduced battery life.

Q: How does heat affect iPhone battery performance and longevity?

A: Heat can negatively impact iPhone battery performance and longevity. High temperatures can cause the battery to degrade faster and reduce its overall capacity. It's essential to avoid exposing your iPhone to excessive heat to maintain a healthy battery.

Q: How can I maximize my iPhone battery performance with iOS settings?

A: You can maximize your iPhone's battery performance by adjusting settings such as screen brightness, enabling background app refresh, and enabling low power mode. Managing location settings, keeping your iOS up to date, and disabling unnecessary features can also help conserve battery power.

Q: What troubleshooting tips can I try for sudden iPhone battery drain?

A: If you experience sudden iPhone battery drain, try identifying resource-intensive apps and managing their usage. Resetting your iPhone to factory settings may also resolve the issue. Regularly checking battery usage data and monitoring for any rogue apps or settings can help address the problem.

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About the author

Ravi Shah

Ravi is the head of Content Strategy at iFixScreens Corporate. With over a decade of experience writing technical content for his readers, Ravi has helped thousands of readers with helpful content, tips, and tricks. He mainly writes content related to gadget repairs, such as iPhones, Smartphones, tablets, and laptops.

Question? Send me an email info@ifixscreens.com