How to Make Your iPhone Battery Last Longer: A Guide Based on Scientific Research

If you are an iPhone user, you probably know how frustrating it is when your battery runs out of juice at the most inconvenient times. Whether you are using your iPhone for work, entertainment, or communication, you want it to last as long as possible without compromising its performance.

But how can you extend your iPhone’s battery life and lifespan? What are the factors that affect the health and capacity of your lithium-ion battery? And what are the best practices and tips to optimize your battery usage and performance?

In this article, I will answer these questions and provide you with some practical and effective tips and tricks to make your iPhone battery last longer. These tips are based on scientific research and my personal experience as an iOS technician and enthusiast who has been using iOS devices for a long time.

What is a Lithium-Ion Battery and How Does It Work?

Before we dive into the tips, let’s first understand what a lithium-ion battery is and how it works. A lithium-ion battery is a type of rechargeable battery that powers most of the modern electronic devices, including iPhones. A lithium-ion battery consists of two electrodes (anode and cathode) and an electrolyte that allows the flow of ions between them. When you charge your iPhone, the lithium ions move from the cathode to the anode and store energy. When you use your iPhone, the lithium ions move from the anode to the cathode and release energy.

What are the Factors that Affect the Lifespan of a Lithium-Ion Battery?

The lifespan of a lithium-ion battery is measured by two indicators: cycle count and state of health (SOH). A cycle count is the number of times a battery can be fully charged and discharged before its capacity drops below a certain threshold (usually 80%). A state of health (SOH) is the percentage of the original capacity that a battery can still hold. For example, if a battery has an SOH of 90%, it means that it can only store 90% of the energy that it could when it was new.

How to Extend Your iPhone’s Battery Life and Lifespan?

Now that you know what a lithium-ion battery is and what factors affect its lifespan, let’s see how you can extend your iPhone’s battery life and lifespan. Here are some tips and tricks that you can try based on scientific research and my personal observations.

Tip 1: Why You Should Keep Your iPhone Away from the Heat and Cold

One of the main factors that affect the lifespan of your iPhone battery is the temperature. According to the paper Assessment of the calendar aging of lithium-ion batteries: A review, high and low temperatures can accelerate the chemical reactions that cause the battery to lose its capacity and increase its internal resistance. Therefore, you should avoid exposing your iPhone to extreme temperatures, such as leaving it in a hot car, near a heater, or in a freezer. The optimal temperature range for your iPhone battery is between 16°C and 22°C, and you should try to keep it within this range as much as possible.

Image: Discharge voltage of an 18650 Li-ion cell at 3A and various temperatures (BatteryUniversity)

As you can see, the battery capacity decreases significantly when the temperature is above 40°C or below 0°C. This means that your iPhone will run out of power faster and need to be charged more often. Moreover, the high and low temperatures can also damage the internal structure of the battery, making it less efficient and more prone to failure.

Tip 2: How Overcharging and Deep Discharging Can Ruin Your iPhone Battery

While temperature is one of the major factors that affect your iPhone battery, it is not the only one. The way you charge and discharge your iPhone also plays a significant role in its lifespan. According to the paper A Review of Factors Affecting the Lifespan of Lithium-ion Battery and its Health Estimation Methods, overcharging and deep discharging can cause the battery to experience stress, which can lead to the formation of cracks, gas bubbles, and dendrites in the electrodes. These phenomena can reduce the battery’s capacity and increase its internal resistance. Therefore, you should avoid charging your iPhone to 100% or letting it drop to 0%. The optimal range for your iPhone battery is between 40% and 80%, and you should try to keep it within this range as much as possible.

“Overcharging and deep discharging can cause irreversible damage to the battery, such as the loss of active material, the growth of solid electrolyte interphase (SEI) layer, and the formation of lithium metal plating. These damage can reduce the battery’s capacity and increase its internal resistance, which can affect the battery’s performance and safety.”

Tip 3: Use the Original Charger and Cable

Another factor that affects the lifespan of your iPhone battery is the quality of the charger and cable. According to the paper [Reliability assessment and lifetime prediction of Li-ion batteries for electric vehicles], the charger and cable can influence the charging voltage, current, and power of the battery, which can affect its aging rate. Therefore, you should use the original charger and cable that came with your iPhone, or a certified third-party charger and cable that are compatible with your device. You should avoid using cheap or counterfeit chargers and cables, as they can damage your battery or even cause a fire.

Tip 4: Enable Low Power Mode and Reduce Background Activity

In addition to avoiding extreme temperatures, overcharging, and deep discharging, you should also pay attention to how much power your iPhone consumes. According to the paper A Comprehensive Review of Lithium-Ion Batteries Modeling, and State of Health Estimation and Prediction, the power consumption of the device can affect the depth of discharge and the temperature of the battery, which can affect its aging rate. Therefore, you should enable the low power mode on your iPhone, which can reduce power consumption by limiting some features and functions, such as automatic downloads, mail fetch, background app refresh, and Siri. You should also reduce the background activity of your apps, such as notifications, location services, and updates, by adjusting the settings on your iPhone.

To explain how low power mode and background activity can affect your iPhone battery, here is a statistic that shows the difference in battery life between normal mode and low power mode:

Image by Wired

As you can see, the battery life in low-power mode is almost twice as long as in normal mode. This means that you can use your iPhone for longer without needing to charge it. Moreover, by reducing the background activity of your apps, you can also prevent them from draining your battery unnecessarily.

Tip 5: Don’t Forget to Calibrate Your Battery Once in a While

Another factor that affects the lifespan of your iPhone battery is the accuracy of the battery indicator. According to the paper[A Review of Factors Affecting the Lifespan of Lithium-ion Battery and its Health Estimation Methods, the battery indicator can become inaccurate over time, due to the mismatch between the actual and estimated state of charge and state of health of the battery. This can cause the battery to be overcharged or undercharged, which can affect its lifespan. Therefore, you should calibrate your battery once in a while, by letting it drain to 0% and then charging it to 100%, without interruption. This can help to reset the battery indicator and improve its accuracy.

Conclusion 

These are some of the tips that can help you save battery on your iPhone and extend its lifespan. By following these tips, you can avoid common battery issues such as fast draining, overheating, or reduced performance. You can also check your battery health and capacity regularly to see if you need to replace it or not. Remember, your iPhone battery is a consumable component that will degrade over time, so it is important to take good care of it and use it wisely. We hope you found this article helpful and informative. If you have any questions or feedback, feel free to leave a comment below. Thank you for reading!

About admin

Hello, I'm iBoy, your mobile solutions companion. I'm passionate about providing easy-to-access solutions for mobile software repair technicians, or what we fondly call MSRTs. I firmly believe that knowledge and resources should be shared and readily available to anyone interested. At here, we're committed to making mobile solutions accessible and user-friendly for both beginners and experienced technicians. Our goal is to help, support, and empower those in the field, without disrupting the hard work of mobile solutions stores, experts, and developers. I'm dedicated to keeping valuable information and resources freely available to everyone. Feel free to explore our content, utilize our resources, and join our vibrant community.

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