How do I keep my iPhone battery health at 100%? (2024)

FAQs

How do I keep my iPhone battery health at 100%? ›

Display brightness and screen time-out settings

The brightness of your iPhone screen can have a significant impact on your battery life. If your display is too bright, it can quickly drain your battery. Similarly, if your screen timeout settings are set for too long, it can also reduce your battery life.

Display brightness and screen time-out settings

The brightness of your iPhone screen can have a significant impact on your battery life. If your display is too bright, it can quickly drain your battery. Similarly, if your screen timeout settings are set for too long, it can also reduce your battery life.

There are two simple ways you can preserve battery life — no matter how you use your device: adjust your screen brightness and use Wi-Fi. Dim the screen or turn on Auto-Brightness to extend battery life. To dim, open Control Centre and drag the Brightness slider to the bottom.

Apple recommends, as do many others, that you try to keep an iPhone battery between 30 and 80 percent charged.

It is based on full charge cycles, and is rated at 500 full charge cycles to 80%. So at 85% that implies that you have used 350 full charge cycles. Possible, but unlikely in less that a year unless you charge it multiple times a day from 0% to 100%.

A new, 100%-80% capacity iPhone battery can hold a charge for 8-20 hours, depending on how it's used. Sitting off in your pocket, it can last all day.

The two things that cause the most battery drain in your iPhone are its screen and cellular service. Obviously, you know when you're actively using your phone, but your iPhone is often performing tasks in the background and even lighting up your screen without you noticing.

It's especially important to avoid exposing your device to ambient temperatures higher than 35° C (95° F), which can permanently damage battery capacity. That is, your battery won't power your device as long on a given charge. Charging the device in high ambient temperatures can damage it further.

How many years does an iPhone battery last? ›

No matter what you do, your iPhone® battery has a limited shelf life. As it ages, the battery slows—so a full charge won't last as long. Most batteries are good for at least 2 to 3 years, often longer, but how do you know when to replace your iPhone battery?

It was thus found that the dark mode can significantly save battery life in peak brightness, usually employed by smartphone users in outdoor conditions under sunlight. Note that these gains were found to exist on OLED screens, thanks to the lack of backlight as found on the LCD (liquid crystal display) screens.

Yes, in fact, most people do just that as it is a convenient time to charge. The battery cannot be over-charged.

As a good practice, you should avoid charging your iPhone to 100% all the time and not let it go below 25%. Ideally, keep the battery percent somewhere between 30% and 80% to maintain your iPhone's battery health.

Modern smartphones have optimized batteries that will stop drawing power once they reach 100 percent. However, when you leave it on the charger, the phone will inevitably lose a little bit of power as it sits there because that's just what batteries do.

Control your brightness

A bright display can make your iPhone battery drain fast, so a good strategy is to keep the screen as dim as your eyes can handle. For starters, pull down the Control Panel from the top right of the screen and drag the Brightness slider down.

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%.

If the onset of your battery drain is sudden, it may be that an app updated or your phone installed a patch. The newer version could contain features that are more resource intensive, or has a bug which runs your battery dry. Check to see if any apps have updated recently.