Where to find your battery percentage on screen

The quickest way to see how much charge your iPhone has left is to look at the battery icon in the top-right corner of your screen. On newer iPhones without a notch, this appears as a small rectangle showing a green, yellow, or red bar. Green means you have plenty of charge; yellow means you are below 20 percent; red means you are below 10 percent and should charge soon.

If you want a number instead of just a visual, swipe down from the top-right corner to open Control Center. The battery percentage appears near the top of that panel. You can also go to Settings > Battery to see the exact percentage at any time.

Key Takeaways

  • The battery icon in the top-right corner shows your charge level at a glance, with color changes warning you when charge is low.
  • Control Center (swipe from top-right) displays your exact battery percentage in seconds without opening Settings.
  • Battery Health in Settings shows whether your battery is degrading and how much of its original capacity remains.
  • Low Power Mode extends battery life by reducing performance and background activity, and you can turn it on manually or set it to turn on automatically at 20 percent.
  • If Battery Health shows significant wear or your phone drains unusually fast, Apple can replace the battery at a service center.

Checking your battery health in Settings

Your battery percentage tells you how much charge you have right now, but Battery Health tells you whether the battery itself is wearing out. Over time, all iPhone batteries lose capacity—this is normal. To see how much capacity your battery has lost, go to Settings > Battery > Battery Health & Charging.

You will see a number labeled Maximum Capacity. This shows what percentage of the battery's original capacity remains. A new iPhone shows 100 percent. If yours shows 80 percent, the battery can hold 80 percent of the charge it could when new. Most people notice slower performance or shorter battery life once capacity drops below 80 percent.

The same screen also shows Condition, which tells you whether the battery is normal, degraded, or needs service. If it says "Service Recommended" or "Service Battery," the battery is wearing faster than expected and Apple can replace it.

Understanding battery condition warnings

If Battery Health shows "Normal," your battery is working as expected for its age. If it shows "Degraded," the battery has lost more capacity than typical, but your phone will still work—it just may not hold a charge as long. If it says "Service Recommended" or "Service Battery," Apple is telling you the battery is failing and you should have it replaced.

A battery that shows "Service Battery" does not mean your phone will stop working, but it means the battery is no longer reliable. It may drain quickly, shut off unexpectedly even when the percentage shows charge remaining, or fail to charge fully. Replacing the battery restores normal performance and charge capacity.

Turning on Low Power Mode to extend battery life

Low Power Mode reduces how much power your phone uses, which stretches your battery life when you are running low. When it is on, your phone reduces performance, limits background activity, and turns off some features like mail fetch and automatic downloads. You will notice the phone feels slightly slower, but the trade-off is that your battery lasts much longer.

To turn on Low Power Mode manually, open Control Center (swipe from top-right) and tap the battery icon. You can also go to Settings > Battery > Low Power Mode and toggle it on. If you want Low Power Mode to turn on automatically when your battery reaches 20 percent, go to Settings > Battery > Low Power Mode and turn on Enable at 20%.

What to do if your battery drains unusually fast

If your battery percentage drops much faster than it used to, start by checking which apps are using the most power. Go to Settings > Battery and look at the list of apps. If one app is using far more than the others, that app may have a problem. Try closing it, restarting your phone, or uninstalling and reinstalling the app.

Fast drain can also happen if your phone is too warm, if you are using location services constantly, or if background app refresh is turned on for many apps. Check Settings > Privacy > Location Services to see which apps have location access, and turn it off for apps that do not need it. Go to Settings > General > Background App Refresh and turn it off for apps you do not use often.

If your battery still drains unusually fast after these steps, and Battery Health shows significant wear or a service warning, the battery itself may be failing. Contact Apple or visit an Apple Store to have the battery tested and replaced if needed.

How battery age affects performance

As your battery loses capacity, iOS automatically manages performance to prevent unexpected shutdowns. This means your phone may feel slower when the battery is low or when the battery is old. This is intentional—it keeps your phone running rather than shutting off suddenly.

If you find your phone is too slow and Battery Health shows low capacity, replacing the battery will restore normal speed. You do not have to replace the battery if you are willing to accept slower performance, but most people find the phone more usable after a battery replacement.

Frequently Asked Questions

What is a normal battery health percentage for an iPhone?

A new iPhone shows 100 percent. After one year of normal use, most iPhones drop to 95 to 98 percent. After two years, 85 to 90 percent is typical. Once capacity falls below 80 percent, you may notice the phone does not hold a charge as long as it used to.

Can I replace my iPhone battery myself?

Apple does not recommend it, and opening your phone can damage it. Apple offers battery replacement at an Apple Store or through mail-in service. Third-party repair shops can also replace batteries, but using non-Apple parts may affect performance or warranty coverage. Check Apple's website for the cost and availability in your area.

Does Low Power Mode damage my battery?

No. Low Power Mode straightforward reduces power use while you are running low on charge. It does not harm the battery or shorten its lifespan. You can use it as often as you want without worry.

Why does my battery percentage jump around?

iOS estimates battery percentage based on voltage, and voltage can fluctuate slightly depending on temperature and how hard the phone is working. If the jumps are small (a few percent), this is normal. If the percentage drops 10 or 20 percent suddenly, or if your phone shuts off even though the percentage shows charge, the battery may be failing and should be checked.

Does closing apps help save battery?

Closing apps in the background does not save much battery because iOS suspends apps you are not using. The bigger drain comes from apps that run in the background even when you are not looking at them. Turning off background app refresh for apps you do not need is more effective than closing apps manually.