Why iPhone Stops Charging at 80% and How to Fix It?

Pramendra S.
9 Min Read

Ever noticed your iPhone suddenly stops charging at 80%? It’s like you’re so close to a full battery, but not quite there, right?

It can be super annoying, especially if you’re getting ready for a long day and need that full 100% charge.

So, what’s going on? Well, your iPhone has a smart feature called Optimized Battery Charging.

It’s designed to protect your battery’s health by slowing down charging once it hits 80%. Sounds smart, but yeah, it can catch you off guard when you really need a full charge.

This matters because if your phone isn’t fully charged, you might run out of battery when you need it most.

Maybe you’re using maps, waiting for an important call, or just out and about. Not fun at all. But don’t worry, I’m here to walk you through some easy ways to fix it.

Stick with me, and you’ll see how simple it is to get your iPhone fully charged again. Ready? Let’s dive in!

Your iPhone is just trying to protect itself

First of all, it’s not your fault. Your iPhone is actually trying to help you with this thing called Optimized Battery Charging.

It learns your daily habits and slows down charging at 80% if it thinks you don’t need a full battery right away.

This helps keep your battery healthy for a longer time.

But hey, I get it—you sometimes just need that full charge, no waiting around.

And when that happens, you’ll want to know how to get past this little roadblock. Let’s keep going!

1. Is your iPhone getting too hot?

Another reason your iPhone might stop charging at 80% is because it’s getting too warm. Charging naturally heats up your phone.

If you’ve been watching videos, gaming, or if your phone’s been sitting in the sun, it might pause charging to cool itself down.

To help out:

  • Take your phone out of its case while charging.
  • Find a cool, shady spot for charging—away from direct sunlight.

Keeping your iPhone cool can make a big difference!

2. Background apps might be causing trouble

Sometimes, apps running in the background can slow down your charging. They’re like little energy thieves, running even when you’re not using them. This can cause your phone to heat up and mess with the charging process.

Here’s what you can do:

  • On iPhones with a home button, double-click it. If you don’t have one, swipe up from the bottom of the screen and pause in the middle.
  • Swipe away apps you’re not using.

Closing unused apps gives your phone a break and helps it charge faster.

How to fix the iPhone charging issue at 80%

Alright, now that you know why it happens, let’s fix it! Here are some simple ways to get your iPhone to charge past that stubborn 80% mark.

Don’t worry—this won’t take long, and you don’t need to be a tech genius to do it!

#1 Turn off Optimized Battery Charging

Sometimes you just need full power—no waiting. You can turn off Optimized Battery Charging like this:

  • Open Settings on your iPhone.
  • Scroll down and tap Battery.

click on settings then tap on battery xll

  • Tap Battery Health & Charging.
  • Toggle off Optimized Battery Charging.

turn on optimized battery charging in settings in iphone

Easy, right? Just remember, keeping this off all the time might slightly affect your battery’s long-term health. Use it when you really need that 100%!

#2 Cool down your iPhone

If your phone feels warm, it might slow down charging to protect itself. Here’s how to cool it down:

  • Take off the phone case while charging.
  • Charge your phone in a cool, shaded place.

Also, if you were gaming, streaming, or using heavy apps, give your phone a little rest before plugging it in. A cooler iPhone charges way better!

#3 Close background apps

Apps running in the background can drain power and slow down charging. Let’s shut them down:

  • Swipe up from the bottom of the screen and pause (or double-click the home button).
  • Swipe away apps you’re not using.

close facetime app in iphone app drawer

Clearing out apps makes it easier for your iPhone to focus on charging, not multitasking.

#4 Restart your iPhone

Sometimes, your iPhone just needs a little reset to get back on track. Here’s how to restart it:

  • Press and hold the power button until you see “slide to power off“.
  • Slide it to turn off your phone.
  • Wait a few seconds, then press and hold the power button again to turn it back on.

restart iphone easily

A fresh restart can clear out any bugs that might be messing with your charging.

#5 Check your charger and cable

Believe it or not, sometimes the problem is with the charger or cable, not the phone. Here’s what you should do:

  • Inspect your cable for any frays, bends, or damage.
  • Try a different cable or adapter to see if that fixes the issue.

Cheap, off-brand chargers can also cause problems. Stick to Apple-certified ones whenever you can!

Extra tips to keep your iPhone charging fast and healthy

1. Keep your iOS updated

Those update notifications aren’t just for show! Updates often fix bugs and improve battery performance.

Next time you see one, go ahead and install it. It might just solve your charging issues, too.

2. Lower your screen brightness

Bright screens use up a lot of battery. Try lowering your brightness or turning on auto-brightness. Your battery and eyes will both thank you!

3. Use Wi-Fi instead of cellular when you can

Using cellular data eats up more battery than Wi-Fi. Whenever possible, connect to Wi-Fi. It’ll help your phone stay cooler and charge faster.

4. Limit background app refresh

Apps love to refresh themselves in the background, even when you’re not using them.

Head to Settings > General > Background App Refresh and turn it off for apps you don’t need constantly updating.

go to general and then click on background app refresh in settings in iphone

5. Keep your battery healthy

Try not to let your battery drop to 0% or charge it all the way to 100% all the time. Keeping it between 20% and 80% most of the time can make your battery last longer.

The takeaway

So, if your iPhone stops charging at 80%, it’s not broken—it’s just being smart about protecting the battery.

But when you need that full charge, now you know exactly what to do. Turn off Optimized Battery Charging, keep your phone cool, close background apps, and check your charger if needed.

One common myth is that your battery is dying when this happens. Nope! It’s just your iPhone trying to be helpful.

With these simple tips, you’ll have your iPhone charging smoothly again in no time.

Got any questions or tips of your own? Feel free to drop them in the comments! I’m here to help.

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Hey, I'm PS, a tech enthusiast and writing expert. With a passion for technology, I specialize in crafting in-depth articles, reviews, and affiliate content. In the ever-evolving world of digital marketing, I've witnessed how the age of the internet has transformed technology journalism. Even in the era of social media and video marketing, reading articles remains crucial for gaining valuable insights and staying informed. Join me as we explore the exciting realm of tech together!
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