You can replace an iPhone battery yourself or have Apple do it

The fastest way to get a working battery is to visit an Apple Store or Apple Authorized Service Provider and let them handle it. They have the right tools, the right parts, and they warranty the work. If you want to do it yourself, you can — but it requires opening your phone, which voids your warranty and risks damage if you slip.

Which route makes sense depends on your phone's age, whether it still has warranty coverage, and whether you have steady hands and patience. A battery replacement at Apple costs between $69 and $99 depending on your model. A DIY kit costs $20 to $40 but demands precision.

Key Takeaways

  • Apple and authorized repair shops replace batteries for $69 to $99 and back the work with a warranty.
  • DIY battery kits are cheaper but require opening your phone with a pentalobe screwdriver, removing the display, and disconnecting the battery connector without damaging it.
  • iPhones with Face ID (iPhone X and newer) are harder to open than older models because the display is glued down.
  • If your battery health has dropped below 80 percent and your phone is still under warranty or AppleCare+, Apple may replace it at no cost.
  • Doing the work yourself voids your warranty and can cause permanent damage if you crack the display or puncture the battery.

Getting Apple or an authorized shop to replace your battery

Start by checking your battery health. Go to Settings, then Battery, then Battery Health & Charging. If the number shown under Maximum Capacity is 80 percent or higher, Apple will not replace it for free — you will pay the standard fee. If it is below 80 percent and your phone is under a one-year limited warranty or you have AppleCare+, the replacement is covered at no cost.

Book an appointment at apple.com/support or call your nearest Apple Store. Tell them you need a battery replacement. Most stores can do it the same day if you arrive early, though busy locations may ask you to come back later. Bring your phone and your ID. The store will back up your data, replace the battery, and restore your phone before you leave.

If you do not have an Apple Store nearby, search for Apple Authorized Service Providers in your area at apple.com/support. These are third-party shops that Apple has trained and supplied with genuine parts. They charge the same price and offer the same warranty as Apple.

Doing the battery replacement yourself

You will need a pentalobe screwdriver (the five-pointed star shape used on iPhones), a plastic spudger or opening tool, tweezers, and a replacement battery kit. Kits from iFixit or similar vendors include most of these tools and cost $25 to $40. You also need a heat source — a hair dryer works — to soften the adhesive holding the display.

The first step is to power off your phone completely. Then heat the edges of the display with a hair dryer for 30 seconds to loosen the adhesive. Use your plastic tool to pry up one corner of the screen very gently. Once you have a gap, slide the tool around the edge to separate the display from the frame. This is the step where most phones get cracked — go slowly and do not force it.

Once the display is free, disconnect the battery connector (a small plug near the top of the phone) by gently pulling the tab. Then remove the old battery by peeling it away from the frame. The adhesive is strong, so pull steadily and at a low angle. Slide the new battery into place, reconnect the battery plug, and press the display back down. The adhesive on new batteries is usually strong enough to hold, but you can add a small amount of adhesive tape if needed.

Why the model of your phone matters

iPhones with Face ID (iPhone X, 11, 12, 13, 14, 15, and newer) have displays glued to the frame with a strong adhesive. Opening them without cracking the screen is much harder than older models. If you slip, a replacement display costs $280 to $400 — far more than the battery itself.

iPhones with Touch ID (iPhone 8 and earlier) have displays held in place with less adhesive, making them easier to open. The battery replacement is still fiddly, but the risk of breaking something is lower.

iPhone SE models (all generations) fall somewhere in between. The first-generation SE is straightforward to open. The second and third generations have stronger adhesive but are still simpler than the Face ID phones.

What can go wrong and how to avoid it

The most common mistake is cracking the display while prying it open. Avoid this by heating the edges thoroughly and using a plastic tool, not a metal one. Metal tools can slip and gouge the screen. Take your time — this step should take 10 to 15 minutes, not two.

The second common mistake is damaging the battery connector when you disconnect it. The connector is small and fragile. Grip the tab, not the wires, and pull straight out. If you pull at an angle or tug on the wires, you can tear the connector off the logic board, and the phone will not power on again.

The third mistake is puncturing the battery itself. Lithium batteries can catch fire if the casing is breached. Never use a metal tool to pry the battery out. Use your fingers or a plastic tool, and pull steadily. If the battery is stuck, heat it again and wait a few minutes.

When to choose DIY and when to use Apple

Choose DIY if you have done phone repairs before, you have a steady hand, and you are comfortable with the idea that you might break something. The money you save ($50 to $60) is real, but it is not worth it if you are nervous or if your phone is a recent model with Face ID.

Choose Apple if your phone is still under warranty or AppleCare+, because the replacement may be free. Choose Apple if your phone is a Face ID model and you have never opened a phone before. Choose Apple if you cannot afford to replace the display if something goes wrong. Choose Apple if you want the work backed by a warranty — if the new battery fails, Apple will replace it again at no cost.

How long a new battery lasts

A new battery should hold a full charge and last through a full day of normal use. After one year, it will have lost about 1 to 2 percent of its capacity. After two years, it will be around 80 to 85 percent. After three years, it will be around 70 to 80 percent. This is normal wear and does not mean the battery is defective.

If a new battery drops below 80 percent capacity in less than one year, and you had it replaced by Apple or an authorized shop, contact them and ask for a replacement under warranty. If you replaced it yourself, you have no recourse.

Frequently Asked Questions

How do I know if my battery needs to be replaced?

Go to Settings, Battery, Battery Health & Charging. If Maximum Capacity is below 80 percent, the battery is degraded. You may also notice your phone shuts down suddenly even when the battery shows 20 or 30 percent, or it takes much longer to charge than it used to.

Can I replace the battery on an iPhone 15?

Yes, but it is difficult. The iPhone 15 has a display glued to the frame and a battery glued to the back. You will need heat, patience, and the right tools. If you have never opened a phone before, Apple is the safer choice.

What happens if I crack the display while opening it?

The phone will still work, but the crack will spread over time and the display may become unresponsive. A replacement display costs $280 to $400 depending on the model. If you crack it, you can still take it to Apple and pay for the display repair separately.

Is it safe to use a phone with a swollen battery?

No. A swollen battery can catch fire or explode. If your battery is visibly bulging, power off the phone when ready and do not use it. Take it to Apple or an authorized shop right away. Do not try to replace it yourself.

Do I need to back up my phone before a battery replacement?

If you go to Apple or an authorized shop, they will back it up for you. If you are doing it yourself, back up your phone to iCloud or your computer first, just in case something goes wrong during the repair.