Why shouldn't you charge your iPhone battery to 100%?

Nowadays, phone batteries have improved significantly in performance, allowing users to use their devices all day on a single charge, even on mid-range or budget models.

However, instead of just focusing on daily battery life, you should also pay attention to battery lifespan, which is the ability of the battery to maintain good performance throughout the device's lifecycle.

One important way to extend battery life is to reduce the time the battery is kept at 100% charge. When a battery is constantly fully charged, it is subjected to greater stress, making it more prone to degradation and reduced performance over time.

This is especially important for phones that use lithium-ion batteries, as these batteries tend to degrade faster if frequently kept at maximum charge for extended periods.

Improve battery life with the "Optimized Battery Charging" feature.

If you use an iPhone, Apple has integrated a smart feature that helps minimize battery stress caused by overcharging. This feature, called "Optimized Battery Charging," works by learning your charging habits.

The "Optimized Battery Charging" feature is designed to reduce battery wear and tear and improve battery life by reducing the time it takes to fully charge your iPhone.

This feature is available when "Charge Limit" is set to 100%. When this feature is enabled, your iPhone will delay charging beyond 80% in certain situations.

iPhones use machine learning technology to understand your daily charging habits. Therefore, the "Optimized Charging" feature only activates when your iPhone predicts it will be connected to the charger for an extended period. This algorithm ensures that your iPhone remains fully charged even after being unplugged.

When "Optimized Charging" is active, a notification on the Lock Screen will show when your iPhone is fully charged. If you need to fully charge your iPhone sooner, tap and hold the notification and then tap "Charge Now".

How to set up the "Charging Limit" feature on iPhone

If you want tighter control over battery charging, Apple also offers another feature called "Charge Limit," especially on the iPhone 15 and newer models. With this feature, you can limit the maximum charge level of your phone to a certain point to reduce stress on the battery.

To activate the "Charging Limit" feature, go toSettingnewsBatteryClick hereBatteryHere, you can set the charging limit to 80%, 85%, 90%, 95%, or 100%. Note that if you select 100%, the device will only use the "Optimized Battery Charging" feature instead of "Charging Limit".

Should you charge your phone to 100%?

According to Apple, using the "Charge Limit" feature can significantly increase battery life. Even if you only set the limit at 95% instead of 100%, this still helps reduce battery wear and tear and prolongs usage time.

However, you don't need to worry too much if your phone occasionally charges to 100%. According to Patrick Holland, editor at CNET and phone reviewer, many different factors affect battery life, not just the charge level.

Apple and other phone manufacturers have developed software algorithms to optimize the charging process, minimizing negative impacts on the battery. Therefore, fully charging your phone isn't something to worry about too much.

Additionally, if you enable "Charge Limit," you'll sometimes still see your iPhone reach 100%. This is because Apple has set up an automatic mechanism to occasionally fully charge the battery in order to maintain accuracy in estimating the actual battery capacity.