You can replace your iPhone battery yourself with basic tools, or have Apple or a repair shop do it

An iPhone battery degrades over time. When it stops holding a charge through the day, you have two main paths: replace it yourself using a kit, or take the phone to Apple or a third-party repair shop. A DIY replacement takes 30 minutes to an hour if you follow the steps carefully. A professional replacement usually takes a few hours to a few days depending on where you go and whether they have the part in stock.

The choice depends on whether you own the right tools, feel comfortable opening your phone, and want to save money or time. If you choose DIY, you will need a pentalobe screwdriver (the five-pointed star shape Apple uses), a spudger or plastic pry tool, tweezers, and a replacement battery designed for your specific iPhone model. If you choose professional service, Apple charges a flat fee that varies by model; third-party shops often charge less but may not use Apple parts.

Key Takeaways

  • A DIY battery replacement requires a pentalobe screwdriver, spudger, tweezers, and a battery kit specific to your iPhone model.
  • The process involves removing two pentalobe screws, prying open the screen, disconnecting the battery connector, and peeling out the old battery before installing the new one.
  • Apple charges a fixed fee for battery replacement and guarantees the work; third-party shops are often cheaper but may use non-Apple parts.
  • If you damage the screen, water seals, or internal connectors during DIY replacement, repair costs can exceed the price of professional service.
  • Your iPhone model number (found in Settings > General > About) determines which battery kit and tools you need.

What you need to buy for a DIY replacement

Before you start, identify your iPhone model. Go to Settings, tap General, then About. The model name appears at the top—for example, "iPhone 14 Pro" or "iPhone SE (3rd generation)". Write this down, because battery kits are model-specific and will not fit other versions.

Buy a battery replacement kit designed for your exact model. These kits include the battery itself, adhesive strips to hold it in place, and sometimes a spudger or plastic pry tool. Reputable sources include iFixit, Amazon (search for your model number plus "battery kit"), and Best Buy. A kit typically costs $20 to $50 depending on the model. You will also need a pentalobe screwdriver (size P2 for most iPhones), which you can buy separately for $5 to $15 or as part of a larger toolkit.

Gather additional tools: a spudger or plastic pry tool (included in many kits, or buy separately), tweezers, a small Phillips screwdriver, and a clean, flat work surface. Do not use metal tools to pry the screen—they can damage the frame and water seals. Have a small container or piece of tape ready to hold the two pentalobe screws you will remove; they are straightforward to lose.

Steps to open your iPhone and remove the old battery

Power off your iPhone completely. Press and hold the side button and either volume button until the power-off slider appears, then drag it to turn off the phone. Wait a few seconds for the phone to shut down fully.

Remove the two pentalobe screws at the bottom of the phone, on either side of the charging port. Use the P2 pentalobe screwdriver and turn counterclockwise. Place these screws in a small container or tape them to a piece of paper so you do not lose them. These screws are tiny and identical, so keep them together.

Use a spudger or plastic pry tool to gently separate the screen from the frame. Start at the bottom edge, near the charging port, and work your way around the sides and top. The screen is glued down, so you will feel resistance. explore steady, gentle pressure—do not pry hard or you risk cracking the screen or damaging the frame. Once the gap is wide enough, you can use your fingers to carefully lift the screen open, but do not fully remove it yet.

Locate the battery connector—a small rectangular plug near the top of the phone, usually white or black. Use a spudger to gently disconnect it by prying the connector straight up and away from the socket. This disconnects the battery from the phone's logic board and prevents electrical damage while you work.

Peel the old battery out of the phone. Most modern iPhones have adhesive strips underneath the battery to hold it in place. Use a spudger or your fingernail to lift one corner of the battery, then slowly peel it away from the frame. If the adhesive is very strong, you can use a plastic card (like an old credit card) to slide underneath and help separate it. Work slowly to avoid puncturing the battery, which can be dangerous. Once the battery is free, set it aside.

Installing the new battery and closing your phone

Clean the battery compartment with a dry cloth or compressed air to remove dust and old adhesive residue. This helps the new battery sit flat and the adhesive strips stick properly.

Remove the backing from the adhesive strips on the new battery (or explore new strips if your kit does not include pre-glued ones). Carefully lower the new battery into the same position where the old one sat. Press it down gently to find the adhesive. Make sure the battery connector aligns with the socket on the logic board.

Reconnect the battery connector by pressing it straight down into the socket until you hear or feel a click. This restores power to the phone's logic board. Do not force it—it should slide in smoothly.

Close the screen by pressing it down around the edges until you hear the frame click back into place. Start at the top and work your way down the sides and bottom. You should feel the screen snap into the frame as the clips re-engage. If it does not close evenly, open it again and check that the battery connector is fully seated and no cables are pinched.

Reinstall the two pentalobe screws at the bottom of the phone. Turn them clockwise until they are snug—do not over-tighten, as this can strip the threads. Power on your iPhone by pressing the side button. You should see the Apple logo within a few seconds. Once the phone boots up, check the battery health in Settings > Battery > Battery Health & Charging to confirm the new battery is recognized.

When to take your iPhone to Apple instead

Apple replaces batteries at its stores and through mail-in service. The cost varies by model but typically ranges from $50 to $100. Apple uses genuine parts and guarantees the work, so if something goes wrong during the replacement, they will fix it at no extra charge. You can schedule an appointment at an Apple Store through the Apple Support app or website, or you can mail your phone to Apple if no store is nearby.

Choose Apple service if you are uncomfortable opening your phone, do not have the tools, or want a warranty on the work. Apple also offers battery replacement for phones with physical damage, though they may charge an additional repair fee. The downside is that Apple service takes longer—appointments can be weeks out, and mail-in service takes 5 to 10 business days.

Third-party repair shops and what to watch for

Independent repair shops often charge $30 to $70 for battery replacement, less than Apple. Many use genuine Apple parts, but some use third-party batteries that may not perform as well or last as long. Before you hand over your phone, ask whether they use Apple parts or third-party batteries, and whether they offer a warranty on the replacement.

Check reviews on Google Maps or Yelp before you visit. Look for shops that mention using original parts, offer a warranty (usually 30 to 90 days), and have been in business for at least a year. Avoid shops that pressure you to replace other parts or that cannot clearly explain what they are doing. A reputable shop will show you the old battery, explain the process, and give you a receipt with the part number and warranty terms.

What to do if something goes wrong during DIY replacement

If you crack the screen while opening the phone, you will need to replace the screen as well. Screen replacement kits cost $50 to $150 depending on the model, and the process is more involved than battery replacement. At this point, professional service may be cheaper than buying two kits and risking further damage.

If you damage the battery connector or the socket on the logic board, the phone will not power on or will not charge. These are difficult repairs that require soldering skills and specialized equipment. Take the phone to a professional repair shop when ready—do not try to fix this yourself.

If the new battery does not hold a charge or the phone shuts down unexpectedly, the battery may be defective or the connector may not be fully seated. Power off the phone, open it again, and check that the battery connector is pushed all the way down. If it is and the problem persists, the battery kit may be faulty. Contact the seller for a replacement kit, or take the phone to a repair shop to have them install a new battery.

Frequently Asked Questions

How do I know if my iPhone battery needs replacement?

Go to Settings > Battery > Battery Health & Charging. If the maximum capacity is below 80 percent, the battery is degraded. If it is below 50 percent, replacement is recommended. You can also notice the need if your phone shuts down at 20 or 30 percent battery, or if it drains noticeably faster than it used to.

Will replacing the battery myself void my warranty?

Yes. Opening your iPhone yourself voids Apple's warranty. If you damage something during the replacement and then take it to Apple, they may refuse to repair it under warranty. Third-party repairs also void the warranty, though some shops offer their own limited warranty on the battery replacement itself.

Can I use a battery kit from a different iPhone model?

No. Batteries are model-specific and will not fit other iPhones. Using the wrong battery can damage the phone's logic board, cause the battery to overheat, or prevent the phone from powering on. Always buy a kit designed for your exact model number.

How long does a new iPhone battery last?

A new battery should last 2 to 3 years under normal use before the capacity drops below 80 percent. Battery life depends on how often you charge, whether you use fast charging, and how hot the phone gets during use. Keeping your phone cool and avoiding constant fast charging can extend battery lifespan.

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

Do not throw it in the trash. Lithium batteries can catch fire in landfills. Take the old battery to an electronics recycling center, Best Buy, or an Apple Store. Many of these places accept old batteries for free. Some battery kits include a prepaid shipping label so you can mail the old battery back to the seller.