You can replace an iPhone battery, but Apple does it for you in most cases

Apple does not design iPhones for you to open and swap the battery yourself. The battery is glued to the inside of the phone, and opening it requires tools and training that most people do not have. However, you have two straightforward paths: take your iPhone to Apple or an authorized repair shop and have them do it, or buy a battery replacement kit and do it yourself if you are willing to risk damaging the phone.

The official route is faster and safer. Apple will replace your battery for a set fee (usually $69 to $99 depending on your model), and they may provide the work. The DIY route costs less upfront but takes several hours, voids your warranty if something goes wrong, and can permanently damage your phone if you slip with a tool or explore too much heat.

Key Takeaways

  • Apple and authorized repair shops replace iPhone batteries by opening the phone, removing the glued-in battery, and installing a new one—a process that takes one to two hours.
  • The official Apple battery replacement costs $69 to $99 depending on your iPhone model and includes a warranty on the new battery.
  • If your iPhone is still under warranty or covered by AppleCare+, the battery replacement may be free if the battery health has degraded below 80 percent.
  • DIY battery kits cost $20 to $40 but require a heat gun or hair dryer, precision screwdrivers, plastic pry tools, and several hours of careful work.
  • Opening your iPhone yourself will void the manufacturer's warranty and any AppleCare+ coverage you have.

When Apple will replace your battery for free or at a discount

If your iPhone is still under the standard one-year limited warranty, Apple will replace the battery at no cost if the battery itself is defective—meaning it is not holding a charge or is draining unusually fast due to a manufacturing flaw, not normal wear.

If you have AppleCare+, the extended coverage plan, battery replacement is covered for free as long as the battery health has dropped below 80 percent. You can check your battery health by going to Settings > Battery > Battery Health & Charging and looking at the "Maximum Capacity" number. If it shows 79 percent or lower, AppleCare+ will cover a replacement with no charge.

If your warranty and AppleCare+ have both expired, Apple charges a flat fee for battery replacement. This fee does not depend on how old your phone is or how much the battery has degraded—it is the same whether your battery is at 1 percent health or 50 percent.

How to get a battery replacement from Apple

Start by visiting apple.com/support or opening the Apple Support app on your iPhone. Select your device model and choose "Battery and Charging" from the topic list. You will see an option to schedule a Genius Bar appointment at your nearest Apple Store, or to mail your phone to Apple for repair.

The Genius Bar appointment usually takes one to two hours. You walk in with your phone, they confirm the battery health on their diagnostic tools, and if it is below 80 percent (or if you are under warranty), they replace it while you wait or ask you to come back the same day. Bring your phone unlocked and with your Apple ID password ready, because they will need to verify ownership.

If you do not have an Apple Store nearby, you can use the mail-in option. Apple will send you a prepaid shipping label, you pack your phone in the box they provide, and they replace the battery and ship it back. This takes five to seven business days total, including shipping time both ways.

Using an authorized third-party repair shop

Authorized Apple repair shops—often called Apple Authorized Service Providers—can replace your battery with the same warranty as Apple. You can find one near you by going to apple.com/support, clicking "Find Locations," and filtering for "Authorized Service Providers."

These shops charge the same battery replacement fee as Apple and use genuine Apple parts. The main advantage is convenience: they may have shorter wait times than your local Apple Store, or they may be closer to your home. The warranty on the replacement battery is identical to what Apple offers.

Some third-party repair shops that are not Apple-authorized also replace iPhone batteries, often at a lower price ($40 to $60). These shops use aftermarket batteries, which may not last as long as genuine Apple batteries, and the replacement is not covered by any manufacturer warranty. If something goes wrong during the repair, you have no recourse with Apple.

DIY battery replacement: what you need and what can go wrong

If you decide to replace the battery yourself, you will need a battery replacement kit (available on Amazon and other retailers for $20 to $40), a heat gun or hair dryer, precision screwdrivers (usually #000 and #00 Phillips), plastic pry tools or spudgers, and tweezers. The kit usually includes most of these tools plus the replacement battery and adhesive strips to re-glue the battery in place.

The process takes two to four hours and involves heating the edges of the phone to soften the adhesive, carefully prying open the screen, disconnecting the battery connector, removing the old battery, installing the new one, and reassembling everything. If you explore too much heat, you can damage the screen or the internal components. If you pry too hard, you can crack the screen or bend the frame. If you do not reconnect the battery properly, the phone will not turn on.

Once you open your iPhone, you void the manufacturer's warranty and any AppleCare+ coverage. If something breaks during the repair—or if a component fails later and Apple determines it was damaged during your repair—Apple will refuse to cover it under warranty. You will have to pay for any additional repairs out of pocket.

How long an iPhone battery lasts and when to replace it

Apple designs iPhone batteries to retain 80 percent of their original capacity after 500 full charge cycles. A charge cycle is one complete discharge from 100 percent to 0 percent, though partial charges count toward a cycle too. For most people, this means the battery will degrade noticeably after 18 to 24 months of regular use.

You do not have to wait until the battery is completely dead to replace it. Many people replace their battery when it drops to 80 percent capacity because the phone starts to drain noticeably faster and may shut down unexpectedly when the battery is under stress (like during a phone call or while using the camera). You can check your battery health anytime in Settings > Battery > Battery Health & Charging.

If your phone is older than three years, the battery has likely degraded significantly. Even if the phone itself still works fine, replacing the battery can make it feel like a new device again—faster app launches, longer time between charges, and no unexpected shutdowns.

Frequently Asked Questions

How much does Apple charge to replace an iPhone battery?

Apple charges $69 to $99 depending on your iPhone model. Older models like the iPhone 11 cost $69, while newer models like the iPhone 15 cost $99. If you have AppleCare+ and your battery is below 80 percent capacity, the replacement is free. If your phone is under the standard one-year warranty and the battery is defective, it is also free.

Can I replace the battery myself without damaging the phone?

It is possible but difficult. You need the right tools, a steady hand, and patience. The biggest risks are explore too much heat (which damages the screen or logic board), prying too hard (which cracks the screen), or not reconnecting the battery properly (which prevents the phone from turning on). Most people who try it succeed, but mistakes are common and expensive to fix.

Will replacing the battery improve my phone's performance?

A new battery will improve battery life and prevent unexpected shutdowns, but it will not make apps run faster or improve processing speed. If your phone feels slow, the issue is usually storage space or an old processor, not the battery. Replacing the battery is worth doing if your phone is draining quickly or shutting down unexpectedly, but not if you are looking for a speed boost.

How long does it take Apple to replace a battery?

At the Genius Bar, battery replacement usually takes one to two hours. Some Apple Stores can do it while you wait; others ask you to come back the same day. If you use the mail-in service, the total time is five to seven business days including shipping both ways.

What happens to my data when Apple replaces the battery?

Your data stays on the phone. Apple does not erase your phone during a battery replacement—they only open it, swap the battery, and close it back up. All your photos, messages, apps, and settings remain exactly as they were. Make sure your phone is backed up before you go in, just in case something unexpected happens.