The iPhone 13 battery capacity is 3227 mAh, which equals 12.41 Wh, according to teardowns and regulatory filings. Apple does not print this figure in its adverts. It describes the battery only as hours of video, streaming and audio playback. So the mAh number you see on this page is a measured or filed value, not a number from the maker's brochure.
If you searched for the battery capacity of iPhone 13 because you are comparing phones, the short answer is that it is a smaller cell than most Android phones carry today. If you searched because the phone drains early, the figure matters less than the health of the cell in your hand. Both points are covered below, along with a simple way to read your own battery health.
Quick facts
Step by step
Open the battery page in Settings
Open Settings and tap Battery. On the newer iOS versions you will then see Battery Health & Charging. On older versions the line is called Battery Health.
Read the Maximum Capacity percentage
The number under Maximum Capacity compares your battery with a new one. A fresh iPhone 13 shows 100 percent, and the figure falls slowly with use.
Look at Peak Performance Capability
This line tells you if the phone is running at normal speed or if it has slowed itself down to prevent unexpected shutdowns. A message about a service need is a sign to book a check.
Note the usage for the last day
Go back to Battery and look at the graph of the last 24 hours. An app that eats a large share of charge is often the real problem, not the cell.
Decide with the percentage and your daily use
If the phone still lasts your whole day, a lower percentage is not urgent. If it dies early and the health figure is low, plan a replacement.
iPhone 13 battery capacity in mAh and Wh
Two numbers describe the iPhone 13 battery. The first is 3227 mAh, the charge the cell can hold. The second is 12.41 Wh, the energy it stores. Watt hours are the better number for comparing phones, because they include the cell voltage. Divide 12.41 by 3.227 and you get a nominal voltage of about 3.85 V, which is a normal figure for a modern lithium-ion cell.
To convert on your own, multiply the mAh figure with the cell voltage, then divide the answer by 1000. For this phone that gives 3227 x 3.85 / 1000, close to 12.4 Wh. The same sum works for any Android phone, so you can compare an iPhone with a 5000 mAh Android on equal terms. Most Android packs run near 3.8 to 3.9 V, so a 5000 mAh pack gives roughly 19 Wh.
Listings show one battery capacity for the iPhone 13 in India. If your phone shows something different, check with the service centre before you buy a cell.
Why Apple does not print the mAh figure
Apple lists battery life in hours of use and keeps the cell size out of its adverts. The mAh value for the iPhone 13 therefore comes from two places: regulatory filings, and teardowns where the cell sticker was read after the phone was opened. Both sources point to 3227 mAh for the standard model.
This also explains why an iPhone has no public battery code like the ones on many Android packs. Replacement cells for it are sold against the phone name, and the repair centre matches the pack to your exact model. If you want the full picture across the range, the all iPhones battery capacity page lists each model with the same method.
Apple's own explanation of battery wear and performance is on its support page: Apple battery and performance information.
How the battery of iPhone 13 compares with nearby models
| Phone | mAh (teardowns) | Wh | Apple video playback claim |
|---|---|---|---|
| iPhone 12 | 2815 | 10.78 | Up to 17 hours |
| iPhone 13 mini | 2406 | 9.57 | Up to 17 hours |
| iPhone 13 | 3227 | 12.41 | Up to 19 hours |
| iPhone 13 Pro | 3095 | 11.97 | Up to 22 hours |
| iPhone 13 Pro Max | 4352 | 16.75 | Up to 28 hours |
| iPhone 14 | 3279 | 12.68 | Up to 20 hours |
The jump from the iPhone 12 is large, about 400 mAh or roughly 15 percent more stored energy. That is why the iPhone 13 felt like a clear step up in daily use. The 13 mini is the smallest of the family and the Pro Max is the biggest by a wide margin. The standard iPhone 13 holds slightly more than the 13 Pro on paper, though the Pro has a faster, variable refresh display that uses power in its own way.
Moving forward, the iPhone 14 battery capacity is only a little higher, so the gain is small. For a larger step, see the iPhone 15 battery capacity.
Real battery life on the iPhone 13
Apple rates the iPhone 13 for up to 19 hours of video, 15 hours streamed and 75 hours of audio. These are lab figures with fixed brightness and good signal. Real use is shorter. Gaming, camera video, a weak mobile signal, a bright screen in sunlight and many apps refreshing in the background all pull the number down.
- Light use, such as calls, messages and some social apps, usually carries a healthy iPhone 13 through a full day.
- Heavy use, such as navigation with the screen on, long video calls or games, can empty it by evening.
- A phone that is two or three years old will give less than a new one, since the cell loses some capacity with every charge cycle.
A customer felt his iPhone 13 had become weak and guessed the battery had shrunk from 3227 to something tiny. The health page showed a good percentage. The real cause was a navigation app running in the background all day with the screen on. After he closed it, the phone lasted until night again.
If an iPhone 13 suddenly empties fast, read our drain troubleshooting page before paying for a new cell.
Charging speed and habits that protect the cell
Apple states that the iPhone 13 can reach about 50 percent charge in around 30 minutes, when used with a 20 W or higher adapter. A lower power adapter works too, only slower. Wireless charging is supported and is slower again, and it also warms the phone a little more.
How long a charge takes also depends on the adapter, the cable, the room temperature and whether you use the phone while it charges. The final fifth always slows, because iOS trims the current to protect the 3227 mAh cell.
- Charge the iPhone 13 away from strong sun and soft bedding.
- Take off a heavy case if the iPhone 13 warms up.
- Turn on Optimised Battery Charging in the battery settings if you charge overnight. It holds the charge near 80 percent for a while and finishes closer to wake-up time.
- Use a cable that is not frayed and an adapter from a reliable make.
Checking the battery health of an iPhone 13
The iPhone 13 shows a health figure inside Settings, so you do not need an app. Follow the five steps above, then read the percentage using the table below. For a method that works on Android as well, see our battery health guide for any phone.
| Percentage shown | What it usually means | Suggested action |
|---|---|---|
| 90 to 100 | Cell is in good shape | No action, keep normal charging habits |
| 80 to 89 | Normal ageing | Watch it, and cut heat and long overnight charging |
| Below 80 | Noticeable wear | Book a battery check with an authorised centre |
| Service message shown | Phone needs inspection | Visit a service centre soon |
Apple's design target for the iPhone 13 is to keep up to 80 percent of the original capacity after 500 full charge cycles. A full cycle means using 100 percent of charge in total, not necessarily in one go.
When to replace the battery, and how
Replace the cell when the health figure is low and the phone no longer lasts your day, or when it shuts down suddenly with charge left. The iPhone 13 is sealed, so the work needs the right tools and a careful hand. Apple lists its service options here: Apple iPhone repair options. A repairer with a strong reputation is the alternative.
Ask what pack is being fitted and whether it is a genuine cell. A non-genuine cell can bring a message in Settings and may hide the health figure. Fake packs often claim a capacity well above 3227 mAh, which no cell of this size can honestly deliver. Fitting advice for all phones is on mobile battery replacement.
If the iPhone 13 swells, the screen lifts at the edge, the phone gets very hot or something leaks, stop charging and switch it off. Leave a swollen iPhone 13 cell unpressed and away from heat. Get it examined at an authorised centre on that very day. A cheap replacement with a fake capacity label carries the same danger, so accept nothing but a pack you can trace.
Frequently asked questions
What is the iPhone 13 battery capacity in mAh?
It is 3227 mAh as per teardowns and regulatory filings. Apple does not print the mAh figure in its adverts. The same cell is 12.41 Wh.
Is the iPhone 13 battery 4000 mAh?
No. The standard iPhone 13 has about 3227 mAh. The 4352 mAh figure belongs to the Pro Max, which is a bigger and heavier phone. Any listing that gives 4000 mAh for the standard model is wrong.
How many hours does the iPhone 13 battery last?
Apple claims up to 19 hours of video playback and up to 75 hours of audio. Daily use is shorter, and a full day of light use is common for a healthy battery.
Which has the bigger battery, iPhone 13 or iPhone 13 Pro?
On teardown numbers, the iPhone 13 holds 3227 mAh and the 13 Pro holds 3095 mAh. Apple still claims longer playback for the Pro, since its chip and screen use power differently.
Where do I check iPhone 13 battery health?
Go to Settings, choose Battery, then Battery Health (called Battery Health and Charging on some versions). Maximum Capacity compares your iPhone 13 cell with a brand new 3227 mAh one. Below 80 percent, think about a replacement.
Can I put a higher mAh battery in my iPhone 13?
Not honestly. The space inside is fixed, so a pack claiming far more than 3227 mAh is almost always a fake label. Fit a pack matched to your model.