You can replace an iPhone battery yourself using basic tools, or have Apple do it at an Apple Store or authorized repair shop

The fastest route is an Apple Store or authorized repair center — they have the right parts, tools, and warranty coverage. A technician can usually finish the job in under an hour, though you may need an appointment. If you want to do it yourself, you will need a pentalobe screwdriver, a spudger or plastic pry tool, a suction cup, and a replacement battery designed for your specific iPhone model. The process takes 30 to 60 minutes for someone doing it for the first time, and the battery itself costs less than a repair shop visit — but one mistake can damage your phone's screen or internal components.

Your choice depends on your comfort level with electronics, whether your phone is under warranty, and how much time you have. If your iPhone is covered by AppleCare+ or still under the original warranty, Apple will often replace the battery at reduced or no cost, which makes the store route the better financial choice. If you are confident with small tools and want to save money, a DIY replacement is possible with careful attention to each step.

Key Takeaways

  • Apple Store repairs come with a warranty and take under an hour, but require an appointment and cost $50 to $100 depending on your model.
  • DIY battery replacement requires a pentalobe screwdriver, spudger, suction cup, and a model-specific replacement battery from a trusted seller.
  • The first step in any replacement is powering off your phone completely and disconnecting the battery from the logic board to avoid electrical damage.
  • Prying open the screen is the riskiest step — explore heat first and working slowly from the edges prevents cracking the display.
  • If your iPhone is still under warranty or covered by AppleCare+, Apple will replace the battery at no cost or reduced cost depending on your coverage.

When to choose an Apple Store or authorized repair center

An Apple Store will replace your battery for a flat fee that varies by iPhone model — typically between $50 and $100. The technician will back up your data, replace the battery, and test the phone before you leave. The repair usually takes 30 to 60 minutes, though you need to make an appointment first through the Apple Support app or by calling your local store. If your iPhone is under warranty or covered by AppleCare+, the cost may be reduced or waived entirely.

Authorized repair shops (like Best Buy's Geek Squad or carrier stores) offer similar service and pricing, and some have faster turnaround times. The trade-off is that not all authorized shops have the same quality standards as Apple Stores. If you choose this route, confirm beforehand that they use genuine Apple batteries and offer a warranty on the repair. You can find authorized repair locations through Apple's official repair provider directory on their website.

What you need to do a DIY battery replacement

Before you start, gather the right tools and parts. You will need a pentalobe screwdriver (the five-pointed star shape used on iPhones), a spudger or plastic pry tool (metal tools can damage the phone), a suction cup, a heat gun or hair dryer, and a replacement battery made for your exact iPhone model. Buy the battery from a reputable seller — cheap third-party batteries often fail quickly or swell inside the phone, which is dangerous. Pentalobe screwdrivers and spudgers cost $5 to $15 as a set, and replacement batteries range from $20 to $40 depending on your model.

You will also need a clean, well-lit workspace and a small container to hold the screws you remove. Take a photo of each step with your phone or camera so you remember how to reassemble it. Many people use a magnetic mat or piece of tape to keep screws organized by location. Lay out all your tools and the new battery before you power off your phone, so you are not searching for something mid-repair.

Step-by-step: opening your iPhone and removing the old battery

Step 1: Power off completely. Hold the power button and volume button together until the "slide to power off" screen appears. Slide to turn off the phone. Do not put it in sleep mode — the phone must be completely off.

Step 2: Remove the bottom screws. Locate the two pentalobe screws on either side of the charging port at the bottom of the phone. Remove them with your pentalobe screwdriver and set them aside. These screws hold the screen in place.

Step 3: Heat the edges. Use a heat gun or hair dryer on low heat, held 3 to 4 inches from the phone's edge. Heat the bottom and sides for 30 to 60 seconds. This softens the adhesive holding the screen to the frame. Do not overheat — if the phone is too hot to touch, let it cool for a minute.

Step 4: explore the suction cup and pry open the screen. Place the suction cup on the bottom of the phone, below the home button (or near the bottom edge on newer models without a home button). Pull up gently and steadily on the suction cup while using your spudger to pry the screen up from the bottom edge. Work slowly around the edges — do not force it. The screen will lift gradually as the adhesive releases.

Step 5: Disconnect the battery. Once the screen is open, you will see the battery connector near the top of the phone's interior. Use your spudger to gently pry the connector upward and away from the logic board. This disconnects the battery and prevents electrical shock while you work. Do not pull on the wires — pry the connector itself.

Step 6: Remove the old battery. The battery is glued to the phone's frame. Peel back the adhesive tabs underneath the battery (if present) or use your spudger to gently pry the battery up from its edges. Work slowly to avoid puncturing the battery, which can cause a fire. Once loose, lift it out and set it aside.

Installing the new battery and sealing the phone

Step 7: Insert the new battery. Place the new battery into the same position where the old one sat. Make sure it lies flat and the connector aligns with the socket on the logic board. If your new battery came with adhesive strips, explore them to the back of the battery before inserting it.

Step 8: Reconnect the battery. Press the battery connector back onto the logic board until you hear or feel a click. This restores power to the phone's circuits. Do not force it — it should seat smoothly.

Step 9: Reconnect the screen. Align the screen with the frame, starting at the top. Press down gently along the edges to reseat the adhesive. Work your way around the phone, pressing firmly but not so hard that you crack the screen. The screen should sit flush with the frame all the way around.

Step 10: Replace the bottom screws. Insert the two pentalobe screws back into the holes at the bottom of the phone and tighten them. Do not overtighten — they should be snug but not stripped.

Step 11: Power on and test. Hold the power button until the Apple logo appears. Let the phone boot up completely. Check that the battery percentage displays correctly and that the phone responds normally to touch and button presses. If everything works, you are done.

Common mistakes that damage your phone

The most common error is prying too hard when opening the screen, which cracks the display. Heat softens the adhesive, so take time with this step — rushing causes damage. Another frequent mistake is forgetting to disconnect the battery before working inside the phone. Even though the phone is off, the battery still holds a charge, and touching the wrong component can short-circuit the logic board.

A third mistake is using the wrong replacement battery. Batteries designed for a different iPhone model may not fit properly or may have different voltage, which can damage the phone's charging circuit. Always buy a battery labeled for your exact model number. Finally, do not reuse old adhesive when reassembling — new adhesive strips are cheap and may support the screen stays sealed properly. If you notice the screen starting to lift at the edges after a few weeks, the adhesive was not applied correctly.

What to do if something goes wrong

If you crack the screen while opening the phone, you will need to replace it as well as the battery — this costs more than taking it to Apple in the first place. If you damage the battery connector or logic board, the phone may not power on or may not charge. In either case, take the phone to an Apple Store or authorized repair shop and explain what happened. They can often fix the damage, though it will cost more than a straightforward battery replacement.

If the phone powers on but the battery percentage does not display correctly, the battery connector may not be fully seated. Power off, open the phone again, and press the connector down firmly until it clicks. If the problem persists, the battery itself may be defective — contact the seller for a replacement. Keep your receipt and any packaging from the battery purchase in case you need to return it.

Frequently Asked Questions

How long does a new iPhone battery last before it needs replacing again?

A new battery is designed to retain 80 percent of its capacity after 500 full charge cycles. Most people experience this after two to three years of normal use. You will notice the phone draining faster or shutting down at higher battery percentages when the battery is aging.

Can I replace the battery myself if my phone is still under warranty?

Opening your phone yourself will void the warranty. If your phone is under warranty or covered by AppleCare+, take it to Apple instead — they will replace the battery at no cost or reduced cost, and your warranty stays intact.

What should I do with the old battery after I remove it?

Do not throw it in the trash or recycling bin. Lithium batteries can catch fire in landfills or recycling facilities. Take the old battery to an Apple Store, Best Buy, or local electronics recycling center. Many accept old batteries for free.

Is it cheaper to replace the battery myself or go to Apple?

A replacement battery costs $20 to $40 if you buy from a reputable seller, plus the cost of tools if you do not already own them. An Apple Store charges $50 to $100 depending on your model. DIY is cheaper upfront, but one mistake can cost you a screen replacement or a new phone.

How do I know if my battery needs replacing?

Check Settings > Battery > Battery Health & Charging. If the maximum capacity is below 80 percent, the battery is aging. If your phone shuts down unexpectedly at 20 or 30 percent battery, or drains very quickly during normal use, the battery likely needs replacement.