Where to find your battery information on iPhone
Your iPhone stores battery information in the Settings app, and you can see it in two places depending on what you want to know. The quickest view shows you how much charge you have left right now. A deeper look shows you the health of the battery itself — whether it is still holding a full charge or wearing down over time.
Both views take less than a minute to reach. You do not need any special tools or apps, and the information is built into every iPhone.
Key Takeaways
- Open Settings, then Battery, then Battery Health & Charging to see your battery's maximum capacity and condition status.
- Maximum capacity below 80 percent usually means the battery is aging and may drain faster than it used to.
- The Battery tab in Settings shows which apps have used the most power in the last 24 hours or the last 10 days.
- If your battery health shows "Service Recommended" or "Service Not Available," Apple can replace the battery for a fee.
- Closing apps, lowering screen brightness, and turning off location services all reduce battery drain, though closing apps has less effect than most people think.
Checking your battery's current charge and health status
Start by opening the Settings app on your home screen. Tap Battery, then Battery Health & Charging. You will see two numbers: Maximum Capacity and Condition.
Maximum Capacity tells you what percentage of a full charge your battery can still hold. A new iPhone battery is 100 percent. After a year or two of regular charging, it might be 95 or 90 percent. After three to five years, it often drops to 80 percent or lower. This is normal wear — lithium batteries lose capacity over time no matter how carefully you treat them.
Condition is Apple's assessment of the battery's overall state. It will say "Normal" if the battery is working as expected, or "Service Recommended" if Apple thinks it should be replaced. If it says "Service Not Available," the battery may be damaged or not genuine.
Understanding what maximum capacity really means
Maximum capacity is not the same as how much charge you have right now. If your maximum capacity is 80 percent and your phone shows 50 percent charge, your battery is holding 50 percent of its current maximum — which is 40 percent of what a brand-new battery could hold.
When maximum capacity drops below 80 percent, you will usually notice your phone drains faster during the day. You might also see the battery percentage jump suddenly from, say, 20 percent to 1 percent, because the battery cannot deliver power as smoothly as it once did. This does not mean the battery is broken — it just means it is aging.
Apple's battery replacement program costs between $50 and $100 depending on your iPhone model, and takes a few days at an Apple Store or authorized repair shop. If your phone is still under warranty or covered by AppleCare+, the replacement may be free.
Seeing which apps drain your battery the most
Go back to Settings and tap Battery. You will see a list of apps ranked by how much power they have used. By default, it shows the last 24 hours, but you can tap "Last 10 Days" at the top to see a longer pattern.
Apps that use a lot of battery usually fall into a few categories: apps that run in the background (like Maps or Spotify), apps that use your screen constantly (like games or social media), and apps that use your location or camera. If an app you barely use is near the top of the list, it might be running in the background without you realizing it.
Tapping an app name in the Battery list shows you a breakdown of how much power it used in the foreground (while you were actively using it) versus the background (while your phone was locked or you were using something else). This helps you decide whether an app is worth keeping or whether you should close it more often.
straightforward ways to reduce battery drain
Lowering your screen brightness is one of the most effective changes you can make, because the display uses more power than almost anything else on your phone. Go to Settings, then Display & Brightness, and either lower the brightness slider or turn on Auto-Brightness so it adjusts based on the light around you.
Turning off location services for apps that do not really need it also helps. Go to Settings, then Privacy, then Location Services. You can turn off location entirely, or tap individual apps and choose "Never" or "While Using" instead of "Always."
Closing apps you are not using has less effect than most people think — iOS is designed to pause apps automatically when you switch away from them. The bigger drain comes from apps that keep running in the background even when you are not looking at them. You can limit this by going to Settings, then General, then Background App Refresh, and turning it off for apps that do not need to update constantly.
Low Power Mode is a built-in setting that reduces performance and background activity to stretch your battery further. You can turn it on manually in Settings, then Battery, then Battery Saver, or set it to turn on automatically when your battery drops below a certain percentage.
What to do if your battery health is poor
If your maximum capacity is below 80 percent and you notice your phone draining quickly or shutting down unexpectedly, a battery replacement is usually the best option. You can order a replacement through Apple's website, visit an Apple Store, or go to an authorized repair shop.
Before you replace the battery, back up your data using iCloud or your computer. The replacement process does not erase your phone, but it is always safer to have a backup. The repair usually takes three to five business days if you mail your phone in, or same-day if you go to a physical location and they have the part in stock.
If your phone is still under warranty (one year from purchase) or you have AppleCare+ (which covers battery replacement for free), the replacement will not cost you anything. Otherwise, expect to pay $50 to $100 depending on your iPhone model.
Frequently Asked Questions
Why is my battery health already below 80 percent after only a year?
Frequent charging, high temperatures, and using your phone while it is charging all speed up battery wear. If you charge your phone multiple times a day or leave it plugged in overnight regularly, the battery will age faster than normal. Keeping your phone cool and avoiding full discharge cycles can slow the process, but some wear is inevitable.
Does closing all my apps really save battery?
Closing apps has a smaller effect than most people think. iOS pauses apps automatically when you switch away, so they use almost no power while you are not looking at them. The real drain comes from apps that keep running in the background — turning off Background App Refresh for those apps helps more than closing them manually.
Can I replace my iPhone battery myself?
You can, but it is risky. Opening an iPhone requires special tools and can damage the screen, water seals, or internal components if you are not careful. Apple and authorized repair shops have the right equipment and can may provide the work. The cost difference is usually small enough that professional replacement is worth it.
What does "Service Not Available" mean for battery condition?
This message usually means the battery is not genuine, was damaged during a repair, or is not communicating properly with your phone. Apple cannot assess its health in this case. You should take your phone to an Apple Store or authorized repair shop to find out whether the battery needs replacement or whether there is a deeper hardware problem.
Does airplane mode really save battery?
Yes, but only if you are not using Wi-Fi or Bluetooth. Airplane mode turns off cellular, Wi-Fi, and Bluetooth all at once. If you turn it on but then turn Wi-Fi back on, you save less battery than if you just turned off cellular. For the biggest battery savings, use airplane mode when you are not expecting calls or messages.