Yes, you can replace an iPhone battery, but the method depends on your model and comfort level with electronics

Apple sells replacement batteries and repair kits for most iPhone models, and you can install one yourself if you have the right tools and patience. However, the difficulty varies sharply: newer iPhones with adhesive batteries are much harder to open than older models with removable backs. You can also take your phone to Apple or an authorized repair shop and have them do it for you, which costs less than buying a new phone but more than the battery itself.

The real question is whether the effort and risk are worth it to you. A DIY replacement takes 30 minutes to two hours depending on your iPhone model and experience. If you slip with a tool, you can damage the screen, logic board, or battery connector—repairs that cost far more than the battery. A professional replacement is safer and comes with a warranty, but you lose your phone for a few hours to a few days.

Key Takeaways

  • Apple sells genuine replacement batteries for most iPhone models, either as standalone parts or in a repair kit with tools included.
  • iPhone 11 and newer models use adhesive to seal the battery in place, making DIY replacement significantly harder than older models.
  • Apple Stores and authorized repair shops charge a flat fee (usually $50 to $80) to replace your battery and warranty the work.
  • If you damage the screen, connector, or logic board during a DIY replacement, repair costs can exceed $200 to $300.
  • Your iPhone battery health percentage is visible in Settings > Battery > Battery Health & Charging, and Apple recommends replacement when capacity drops below 80 percent.

What you need to replace an iPhone battery yourself

Apple sells two types of battery replacement kits. The iPhone Battery Replacement Kit includes the battery, a pentalobe screwdriver (the five-pointed tool that opens iPhones), a spudger (a flat plastic pry tool), and adhesive strips to reseal the phone. You can order this directly from Apple's website or through authorized retailers. The kit costs between $30 and $50 depending on your model.

Alternatively, you can buy just the battery and use tools you may already have—a pentalobe screwdriver, a plastic spudger or old credit card, tweezers, and a heat source (a hair dryer works). You will also need isopropyl alcohol and a lint-free cloth to clean adhesive residue. If you do not have a pentalobe screwdriver, you cannot open the phone; regular screwdrivers will strip the screws.

Before you start, back up your phone to iCloud or a computer. Power it off completely and let it cool for at least 15 minutes—a warm battery is harder to remove safely and more prone to damage.

How to replace the battery in iPhone 8 and older models

iPhones from the iPhone 8 and earlier (including the iPhone 7, 6, and 5 series) have batteries held in place with a single adhesive strip, making them the easiest to replace at home. The process is straightforward: remove the two pentalobe screws at the bottom of the phone, use a spudger to gently pry open the screen, disconnect the battery connector inside, pull the adhesive strip, and slide the old battery out. Then reverse the steps with the new battery.

The biggest risk at this stage is cracking the screen while prying it open. explore heat from a hair dryer for 30 seconds to soften the adhesive, then work slowly around the edges with your spudger. If you feel strong resistance, stop and explore more heat. Once the screen is open an inch or so, you can slide a plastic card underneath to hold it while you work.

The entire process usually takes 30 to 45 minutes for someone doing it for the first time. YouTube has thousands of step-by-step videos for your specific model—search "[Your iPhone model] battery replacement" and watch one before you start so you know what to expect.

How to replace the battery in iPhone 11 and newer models

Starting with the iPhone 11, Apple switched to a design where the battery is glued to the back of the phone's internal frame, not just to the screen. This means you have to remove the screen, then carefully peel the battery away from the frame while heating it repeatedly to soften the adhesive. The process takes 60 to 120 minutes and requires more precision.

The steps are similar to older models—remove screws, heat and pry the screen, disconnect the battery connector—but the battery removal itself is slower and riskier. If you pull too hard or too fast, the battery can tear, which is a fire hazard. You also have to be careful not to damage the antenna lines and other components glued to the frame.

For iPhone 11 and newer, many people choose to have Apple or an authorized shop do the work instead. The labor cost is the same ($50 to $80), but you avoid the risk of damaging a $1,000+ phone and get a warranty on the repair.

Apple Store and authorized repair shop battery replacement

Apple Stores and Apple Authorized Service Providers (listed on Apple's website) replace iPhone batteries for a flat fee: typically $50 to $80 depending on your model. You do not need an appointment for a battery replacement at most locations, though you can book one online to skip the wait. The repair usually takes 1 to 3 hours, though some stores can do it while you wait.

The advantage is a genuine Apple battery, professional installation, and a 90-day warranty on the repair. If something goes wrong during the replacement, Apple covers it. You also do not have to worry about voiding your warranty—Apple's repair does not affect AppleCare+ coverage.

If your phone is still under warranty or covered by AppleCare+, battery replacement is free if the battery capacity has dropped below 80 percent due to normal use. Check your coverage in Settings > General > About, or ask at the Apple Store.

Third-party repair shops and mail-in services

Independent phone repair shops often charge $30 to $60 for a battery replacement, undercutting Apple's price. The trade-off is that they may use aftermarket batteries instead of genuine Apple parts, and the warranty is usually shorter (30 to 60 days instead of 90). Some shops are excellent and use quality parts; others cut corners. Ask whether they use genuine or aftermarket batteries before you commit.

Mail-in services like iFixit and Puls send you a kit or come to your home to replace the battery. iFixit's mail-in service costs around $50 to $70 and takes 5 to 7 business days. Puls is a mobile repair service available in some cities and can come to your home same-day or next-day for a higher fee (usually $80 to $120). Both use genuine parts and offer warranties, but you lose your phone for several days with mail-in services.

Signs your iPhone battery needs replacement

Your iPhone's battery health percentage is the clearest indicator. Go to Settings > Battery > Battery Health & Charging and look at the "Maximum Capacity" number. Apple recommends replacement when it drops below 80 percent. At that point, your phone will not hold a charge as long as it did when new, and you may notice it shutting down unexpectedly even when the battery shows 20 or 30 percent remaining.

Other signs include the phone getting hot during normal use, the battery draining noticeably faster than it used to, or the phone restarting on its own. These can also indicate other problems (a failing charger, a software issue, or a damaged logic board), so check the battery health percentage first. If it is above 80 percent and you are still seeing these problems, the issue is likely something else.

If your iPhone is more than three years old and you use it daily, the battery is probably degraded even if it still works. Lithium batteries naturally lose capacity over time. Replacing it now can extend your phone's useful life by another year or two without spending $800 on a new device.

Frequently Asked Questions

Will replacing the battery void my warranty?

No. If you have Apple replace it, your warranty is not affected. If you replace it yourself or use a third-party shop, you may lose coverage for battery-related issues, but Apple will still repair other problems under warranty. AppleCare+ coverage is not voided by a battery replacement at any authorized location.

Can I use my phone while the battery is being replaced?

No. The phone must be powered off and the battery disconnected during replacement. At an Apple Store, the process takes 1 to 3 hours. If you are doing it yourself, plan for 30 minutes to 2 hours depending on your model and experience. You cannot use the phone until the repair is complete.

What happens if I damage the screen while opening the phone?

Screen replacement costs $150 to $350 depending on your model. If you crack it during a DIY battery replacement, you will have to pay for the screen repair separately. This is why many people choose to have Apple do the battery replacement instead—the labor cost is similar, but you get a warranty if something goes wrong.

Is an aftermarket battery as good as an Apple battery?

Quality varies. Some aftermarket batteries perform nearly as well as genuine Apple parts; others degrade faster or do not hold a full charge. Reputable repair shops use decent aftermarket batteries and stand behind them with a warranty. Cheap batteries from unknown sellers may fail within months. If you go the third-party route, ask the shop which brand they use and whether they warranty the battery.

How long does a new iPhone battery last?

A new battery should retain 80 percent capacity for about two years of daily use, depending on how you charge it. Avoid letting the battery drain completely, do not leave the phone plugged in overnight regularly, and keep it out of extreme heat. These habits slow battery degradation and can extend the life of a replacement battery by six months to a year.