You can replace your iPhone battery yourself using a kit, or have Apple or an authorized repair shop do it for you

The fastest way is to visit an Apple Store or authorized repair provider—they handle the whole job in one to three hours, and you get a genuine Apple battery with warranty coverage. If you want to do it yourself, you'll need a battery replacement kit (around $20 to $40), basic tools, and about 30 to 60 minutes of careful work. The third option is a mail-in repair through Apple, which takes longer but works if you have no local repair shops.

Your choice depends on whether you have time to visit a store, whether you're comfortable opening your phone, and whether you want the official warranty that comes with Apple's repair. All three methods result in a working battery—the difference is cost, speed, and what happens if something goes wrong.

Key Takeaways

  • Apple Stores and authorized repair shops replace batteries in one to three hours and include a one-year warranty on the repair.
  • DIY battery kits cost $20 to $40 and take 30 to 60 minutes, but you lose water resistance if you don't seal the phone correctly afterward.
  • You need a pentalobe screwdriver, plastic pry tools, and tweezers to open an iPhone safely—these come in most kits.
  • Removing the old battery requires heat (a hair dryer works) to soften the adhesive, and prying slowly to avoid puncturing it.
  • Mail-in repair through Apple takes one to two weeks but requires no tools and includes full warranty coverage.

Getting Your Battery Replaced at an Apple Store

Walk into an Apple Store with your iPhone and ask for a battery replacement. You'll need to show your ID and provide a phone number for contact. Apple will run a diagnostic to confirm the battery is the problem (they can tell if your battery health has dropped below 80 percent), then quote you a price and a wait time.

The cost varies by iPhone model—older models like the iPhone 11 cost less than newer ones like the iPhone 15. If your phone is still under warranty or covered by AppleCare+, the replacement may be free or cost only $29. Without coverage, expect to pay $50 to $100 depending on your model. The repair usually takes one to three hours, though busy stores may ask you to come back later.

You'll walk out with a new battery, a one-year warranty on the repair, and your phone's water resistance restored to factory standard. This is the safest choice if you're unsure about opening your phone yourself.

Using an Authorized Repair Provider

If no Apple Store is nearby, search for "Apple authorized repair" or "iPhone repair" in your area. Authorized providers include Best Buy Geek Squad, some carrier stores (Verizon, AT&T), and independent shops certified by Apple. Call ahead to confirm they stock batteries for your model and ask about wait times.

Pricing and warranty coverage are the same as Apple Stores—you'll pay the same amount and get the same one-year warranty on the repair. The main difference is speed: some independent shops can replace a battery in 30 minutes, while others may take longer. Ask whether they use genuine Apple batteries or third-party replacements; genuine batteries are more reliable and hold their warranty.

Replacing the Battery Yourself with a Kit

A DIY battery kit includes the replacement battery, a pentalobe screwdriver (the special tool iPhones use), plastic pry tools, tweezers, and sometimes a heat gun or adhesive strips. You can buy these on Amazon, iFixit, or other electronics retailers for $20 to $40. The process takes 30 to 60 minutes if you follow instructions carefully.

Start by powering off your phone completely. Use a hair dryer on low heat for 30 seconds to warm the edges of the phone—this softens the adhesive holding the battery in place. Open the two pentalobe screws at the bottom of the phone (near the charging port) and use a plastic pry tool to gently lift the screen away from the body. Work slowly around the edges; the screen is glued down and will crack if you pry too hard.

Once the screen is open, you'll see the battery in the center of the phone. It's held down with adhesive strips. Gently peel these strips away using tweezers, or use the pull-tabs if your kit includes them. Disconnect the battery connector (a small plug) by lifting it straight up with a plastic tool. Remove the old battery and slide the new one into place, reconnect the plug, and press the adhesive strips down firmly on the new battery.

Close the screen by pressing it down evenly around all edges until it clicks. Replace the two pentalobe screws at the bottom. Power on your phone and check that the battery percentage shows correctly. The critical step many people skip is resealing the phone: if moisture gets inside, you'll damage the logic board. Press the screen edges firmly and consider using a waterproof sealant around the seam if your kit includes one.

Mail-In Repair Through Apple

If you can't visit a store and don't want to open your phone, you can mail it to Apple for repair. Go to apple.com/support, select your device, and choose "Battery Service." Apple will email you a prepaid shipping label. Pack your phone carefully and drop it off at any shipping location.

Apple receives your phone, runs diagnostics, replaces the battery, and ships it back—the whole process takes one to two weeks. You'll pay the same price as an in-store repair and get the same one-year warranty. This option is slower but requires no tools and no risk of damaging your phone yourself.

Common Mistakes to Avoid

The most common error is prying the screen too hard and cracking it. The screen is glued down, not snapped on—use gentle, steady pressure and work your way around the entire edge rather than forcing one spot. If you feel strong resistance, explore more heat with your hair dryer and wait 30 seconds before trying again.

Another mistake is puncturing the old battery while removing it. Lithium batteries can catch fire if punctured, so use plastic tools only—never metal. If you see any liquid leaking from the battery, stop when ready and take your phone to a repair shop.

A third mistake is reassembling the phone without fully resealing it. If you leave gaps around the screen edge, moisture will eventually seep in and damage the phone's internal circuits. Press the screen down firmly all the way around and wait a few minutes for the adhesive to set before using the phone.

What to Do If Your Phone Won't Turn On After Replacement

If your phone doesn't power on after you replace the battery, the most likely cause is a loose battery connector. Power off the phone, open the screen again, and check that the battery connector is fully seated—it should click into place. If it's loose, disconnect it and reconnect it firmly.

If the phone still won't turn on, the battery connector may be damaged or the new battery may be faulty. At this point, take your phone to an Apple Store or authorized repair shop. They can diagnose the problem and fix it without charge if the damage happened during their repair, or at standard repair rates if you did the work yourself.

Frequently Asked Questions

How long does a new iPhone battery last?

A new battery should retain 80 percent of its capacity after 500 full charge cycles, which typically takes two to three years of normal use. After that, the battery will gradually lose capacity. Most people replace their battery when it drops below 80 percent health, which you can check in Settings > Battery > Battery Health & Charging.

Will replacing the battery void my warranty?

No. If Apple or an authorized repair shop does the replacement, you get a one-year warranty on the repair itself. If you do it yourself with a third-party battery, you don't void your phone's overall warranty, but Apple won't cover any damage that happens during the replacement. Your phone's original warranty remains in effect for other issues.

Can I use a third-party battery instead of an Apple battery?

Yes, but genuine Apple batteries are more reliable and hold their capacity longer. Third-party batteries are cheaper but may degrade faster or not report their health accurately to your phone. If you use a third-party battery, your phone may show "Unknown Battery" in Settings, and you won't get the same performance guarantees.

Do I need to back up my phone before replacing the battery?

No. Replacing the battery doesn't erase any data on your phone. However, it's always good practice to back up your phone regularly in case something unexpected happens during the repair.

What if I damage my screen while opening the phone?

If the screen cracks during battery replacement, you'll need to replace it as well. Apple charges $200 to $400 for screen replacement depending on your model. This is why many people choose to have Apple do the battery replacement instead—you avoid the risk of damaging other parts of the phone.