How to Keep iPhone 15 Battery Health at 100: Top Tips

Keeping your iPhone 15 battery at 100% health can seem like a daunting task, but it’s actually quite straightforward. By following a few simple steps, you can ensure your battery remains in tip-top shape for longer. This involves being mindful of how you charge your device, as well as how you use it on a day-to-day basis.

Step by Step Tutorial: Keeping Your iPhone 15 Battery Health at 100%

Before diving into the specifics, it’s essential to understand that these steps are designed to optimize your iPhone’s battery health. This means maximizing its lifespan and ensuring it holds a charge as effectively as possible over time.

Step 1: Avoid Extreme Temperatures

Keep your iPhone away from extreme heat and cold.

Exposing your iPhone 15 to temperatures higher than 35° C (95° F) can permanently damage battery capacity. Similarly, charging your phone in cold conditions can also lead to long-term battery issues. It’s best to keep your phone in a moderate temperature environment whenever possible.

Step 2: Update to the Latest Software

Always keep your iPhone updated with the latest version of iOS.

Apple often releases software updates that can help improve battery life and performance. By keeping your iPhone up to date, you’re ensuring that any battery management features are optimized for the best performance.

Step 3: Optimize Charging Practices

Charge your iPhone to about 80% and avoid letting it drop below 20%.

Constantly charging your iPhone to 100% and letting it drain to 0% can strain the battery over time. A happy medium is keeping your battery charged between 20-80%. This is known as the “sweet spot” for lithium-ion batteries.

Step 4: Use Apple-certified Chargers

Always use official Apple chargers or certified third-party options.

Non-certified chargers can be damaging to your iPhone’s battery health. They may not meet the required power specifications and can cause overheating and other issues. Stick to Apple-certified products for safe charging.

Step 5: Monitor Battery Usage

Regularly check your iPhone’s Battery Health in Settings.

Your iPhone has a built-in tool that lets you check the health of your battery. Go to Settings > Battery > Battery Health to see your battery’s maximum capacity and peak performance capability. Monitoring this can help you see how your usage affects your battery over time.

After completing these steps, your iPhone 15 battery should maintain optimal health for a longer period. Implementing these practices early on and sticking to them can significantly extend the life and performance of your battery.

Tips for Maintaining iPhone 15 Battery Health

  • Avoid using your iPhone while it’s charging, as this can generate excess heat and affect battery health.
  • When you don’t plan on using your iPhone for a prolonged period, store it half-charged.
  • Use Low Power Mode to extend your battery life when it starts to get low.
  • Turn off unnecessary features like location services and background app refresh for apps you don’t use often.
  • Consider using your iPhone at a lower brightness level to reduce battery strain.

Frequently Asked Questions

Can I leave my iPhone charging overnight?

It’s generally safe to leave your iPhone charging overnight, thanks to the built-in software that prevents overcharging. However, for optimal battery health, try to avoid charging it to 100% every night.

What is the best way to charge my iPhone 15 battery?

The best way to charge your iPhone 15 battery is in short bursts throughout the day, aiming to keep the charge between 20-80%.

How often should I do a full charge cycle?

It’s recommended to do a full charge cycle (charging from 0% to 100%) about once a month to calibrate the battery.

Does using my iPhone while charging damage the battery?

Using your iPhone while it’s charging can generate additional heat, which might affect the battery health over time. It’s best to let it charge without using it when possible.

Will my iPhone’s battery health decrease if I always charge it to 100%?

Frequently charging your iPhone to 100% can lead to a slight decrease in battery health over time. Sticking to the 20-80% rule can help maintain its health longer.


  1. Avoid extreme temperatures.
  2. Keep your software updated.
  3. Optimize your charging habits.
  4. Use certified chargers.
  5. Check the Battery Health regularly.


Maintaining the battery health of your iPhone 15 is crucial for ensuring it lasts as long as possible. By following the simple steps outlined above, such as avoiding extreme temperatures, keeping your software updated, optimizing your charging practices, using certified chargers, and monitoring your battery usage, you can keep your battery health at 100%. It’s also essential to keep in mind that your battery will naturally degrade over time, so employing these best practices will slow down the process and keep your iPhone running smoothly for longer. So, take control of your iPhone 15 battery health today and enjoy a device that stays powered up and ready to go whenever you need it.

Join Our Free Newsletter

Featured guides and deals

You may opt out at any time. Read our Privacy Policy