Charge and monitor the iPhone battery
iPhone has an internal, lithium-ion rechargeable battery, which currently provides the best performance for your device. Compared with traditional battery technology, lithium-ion batteries are lighter, charge faster, last longer, and have a higher power density for more battery life. To understand how your battery works so you can get the most out of it, see the Apple Lithium-ion Batteries website.
Charge the battery
To charge your iPhone battery, do one of the following:
Connect iPhone to a power outlet using the included Lightning to USB Cable and USB power adapter.
Connect iPhone to a USB port on your computer, which also allows you to sync iPhone with iTunes. (See Connect iPhone to your computer using USB.) Make sure your computer is turned on—if iPhone is connected to a computer that’s turned off, the battery may drain instead of charge. Look for next to the battery icon to make sure your iPhone is charging.
Note: Don’t try to charge your iPhone by connecting it to your keyboard, unless your keyboard has a high-power USB port.
The battery icon in the upper-right corner shows the battery level or charging status. When syncing or using iPhone, it may take longer to charge the battery.
If iPhone is very low on power, it may display an image of a nearly depleted battery, indicating that it needs to charge for up to 10 minutes before you can use it. If iPhone is extremely low on power, the display may be blank for up to 2 minutes before the low-battery image appears.
WARNING: If you suspect there may be liquid in the Lightning connector of iPhone, don’t use the Lightning connector to charge iPhone. For information about exposure to liquid, and other important safety information about the battery and charging iPhone, see Important safety information for iPhone.
Show the percentage of battery remaining in the status bar
iPhone X and later: Swipe down from the top-right corner.
Other models: Go to Settings > Battery, then turn on Battery Percentage.
Turn on Low Power Mode
Using Low Power Mode can significantly increase the life of the battery charge. Switch to Low Power Mode when your iPhone battery is low, or when you don’t have access to electrical power.
Go to Settings > Battery.
Turn on Low Power Mode.
Low Power Mode limits background activity and tunes performance for essential tasks like making and receiving calls, email, and messages; accessing the Internet; and more.
Note: If your iPhone switches to Low Power Mode automatically, it switches back to normal power mode after charging to 80%. Your iPhone might perform some tasks more slowly when in Low Power Mode.
View your battery usage information
Go to Settings > Battery.
Information about your battery usage and activity appears for the last 24 hours and up to the last 10 days.
Insights and suggestions: You might see insights about conditions or usage patterns that cause iPhone to consume energy. You might also see suggestions for lowering energy consumption. If a suggestion appears, you can tap it to go to the related setting.
Last Charge Level: Indicates how fully the battery was last charged and the time it was disconnected.
Battery Level graph (in Last 24 Hours): Shows the battery level, charging intervals, and periods when iPhone was in Low Power Mode or the battery was critically low.
Battery Usage graph (in Last 10 Days): Shows the percentage of battery used each day.
Activity graph: Shows activity over time, split by whether the screen was on or off.
Screen On and Screen Off: Shows total activity for the selected time interval, for when the screen was on and when it was off. The Last 10 Days view shows the average per day.
Battery Usage by App: Shows the proportion of the battery used by each app in the selected time interval.
Activity by App: Shows the amount of time each app was used in the selected time interval.
Note: To see battery information for a specific hour or day, tap that time interval in the graph. To deselect it, tap outside the graph.
Check your battery’s health
On iPhone 6 or later, go to Settings > Battery.
Tap Battery Health.
iPhone displays information about your battery’s capacity, peak performance, and whether your battery needs to be serviced.
Over time, the capacity and performance of all rechargeable batteries, like those found in iPhone, decline. If your battery’s health is significantly degraded, an Apple Authorized Service Provider can replace the battery to restore the performance and capacity. See the Battery service and recycling website.
To learn how to maximize your battery’s performance and lifespan, see the Apple Support article iPhone Battery and Performance.
To understand how your battery works so you can get the most out of it, see the Apple Lithium-ion Batteries website.