You can replace an iPhone battery, but the method depends on whether you go to Apple or a third party

Apple will replace your iPhone battery for a flat fee at any Apple Store or through mail-in service. A third-party repair shop will do it faster and sometimes cheaper, but the quality of the replacement battery varies. You cannot safely replace an iPhone battery yourself — the device is sealed, and opening it risks damaging the screen, logic board, or battery itself, which can catch fire.

The most straightforward route is Apple, because they use genuine parts and your warranty stays intact. Third-party shops are faster and may cost less, but you lose any remaining warranty coverage on the phone itself. Either way, expect to be without your phone for a few hours to a few days depending on the route you choose.

Key Takeaways

  • Apple charges a flat fee (typically $69 to $99 depending on your iPhone model) and replaces the battery with a genuine part.
  • Third-party repair shops often charge $30 to $60 and can complete the work the same day, but quality varies by shop.
  • Mail-in battery replacement through Apple takes 5 to 7 business days but works if no Apple Store is near you.
  • Do not attempt to replace the battery yourself — iPhones are sealed devices, and opening one risks fire, water damage, and permanent hardware failure.
  • Your iPhone battery degrades over time; Apple considers a battery at 80% health or below a candidate for replacement.

How to check your iPhone battery health before you replace it

Your iPhone tracks its own battery health and will tell you when it is degrading. Go to Settings, then Battery, then Battery Health & Charging. You will see a percentage labeled "Maximum Capacity" — this is how much charge your battery holds compared to when it was new.

If the percentage is 80% or higher, your battery is still in good shape. If it is between 70% and 79%, you may notice the phone drains faster than it used to, but replacement is not urgent. Below 70%, Apple will let you replace the battery, and you will likely see a real difference in how long the phone lasts between charges.

The same screen also shows "Battery Health" status. If it says "Normal", your battery is fine. If it says "Service Recommended" or "Service Battery", Apple is telling you the battery has degraded enough that replacement will help. This status does not mean the battery will fail tomorrow — it means the battery is wearing out and will continue to lose capacity.

Replacing your battery at an Apple Store

Call or visit your nearest Apple Store and ask for a battery replacement. You can also book an appointment through the Apple Support app or on apple.com. Bring your phone and a form of ID. Apple will run a diagnostic to confirm the battery is the problem, then quote you a price and a timeline.

The cost is a flat fee based on your iPhone model — typically $69 for older models and up to $99 for the newest ones. The work usually takes 1 to 3 hours if you wait, or you can drop the phone off and pick it up later the same day. Apple backs the replacement battery with a one-year warranty, and your phone's original warranty continues as if nothing happened.

If your phone is still under AppleCare+, battery replacement is covered at no cost. Check your coverage in the Apple Support app under "My Devices" — it will show your plan details and what is covered.

Mailing your iPhone to Apple for battery replacement

If no Apple Store is within reach, you can send your phone to Apple for repair. Go to apple.com/support, select your device, choose "Battery Service", and follow the prompts to start a mail-in repair. Apple will email you a prepaid shipping label.

Pack your phone securely and drop it at a UPS location or other carrier pickup point. Apple receives it, runs diagnostics, replaces the battery, and ships it back — the whole process takes 5 to 7 business days. You will be without your phone during this time, so back up your data first using iCloud or a computer.

The cost is the same as in-store replacement. Apple will contact you if they find a different problem and the repair would cost more, so you can approve or decline before they proceed.

Using a third-party repair shop for faster, cheaper battery replacement

Independent phone repair shops will replace your iPhone battery the same day for $30 to $60, depending on your model and location. Search "iPhone battery replacement near me" to find shops in your area, or check reviews on Google Maps or Yelp to find one with consistent ratings.

Call ahead and ask: Do they use genuine Apple batteries or third-party batteries? How long does the work take? What warranty do they offer on the replacement battery? Shops that use genuine parts will charge more but the battery will last longer and perform better. Shops that use cheaper third-party batteries may have the phone ready in an hour but the battery may not hold a charge as well after a year.

When you hand over your phone, ask for a receipt that lists the battery part number and the warranty period. Most shops offer 30 to 90 days on the battery itself. Keep the receipt — if the battery fails, you will need it to claim the warranty.

One downside: once a third party opens your phone, your Apple warranty on the device itself is void. If something else breaks later, Apple may refuse to repair it under warranty. For most people this is not a problem, but if your phone is new or still covered, this is worth weighing against the cost savings.

What happens to your data during battery replacement

Your data stays on the phone. The technician does not erase anything — they remove the battery and install a new one, then power the phone back on. Everything you had before is still there: your photos, messages, apps, and settings.

Before you hand over your phone, back it up anyway. If something goes wrong during the replacement — a rare but possible accident — you will have a copy. Use iCloud by going to Settings > [Your Name] > iCloud > iCloud Backup and tapping Back Up Now. Or connect to a computer and use Finder (Mac) or iTunes (Windows) to back up locally.

Signs your iPhone battery needs replacement soon

Beyond the battery health percentage, your actual use will tell you when replacement makes sense. If your phone dies at 20% battery, shuts down unexpectedly in the cold, or drains from 100% to 50% in a few hours of normal use, the battery is failing. These are signs the battery cannot hold or deliver charge reliably anymore.

You may also notice the phone feels warm during normal use, or the back gets hot during charging. This can mean the battery is working harder than it should, which shortens its remaining lifespan. Replacement will fix this.

If your phone is more than 3 years old and you have not replaced the battery yet, it is worth checking the health percentage. Lithium batteries degrade over time no matter how carefully you use them — it is not a sign you did something wrong, just the normal wear of the technology.

Frequently Asked Questions

How long does an iPhone battery last before it needs replacement?

Apple designs iPhone batteries to retain 80% of their capacity after 500 full charge cycles. In real use, that is roughly 2 to 3 years for most people. If you charge your phone every day, you will hit 500 cycles in about 18 months. If you charge every other day, it takes longer. After that point, the battery will continue to work but will hold less charge.

Can I replace the battery myself with a kit from the internet?

You can buy battery replacement kits online, but it is not worth the risk. iPhones are sealed with adhesive, and prying them open can crack the screen or damage the logic board. If the battery is punctured during removal, it can catch fire. Even if you succeed, you lose your warranty and may have water-resistance problems afterward. The cost savings are not worth the danger.

Will replacing the battery make my iPhone feel like new?

A new battery will restore the charging speed and how long the phone lasts between charges. It will not speed up the processor or improve performance — that depends on the iOS version and the phone's age. If your phone is slow, a battery replacement alone will not fix it. But if it drains too fast or shuts down unexpectedly, a new battery will solve those problems.

What if my iPhone battery is swollen?

A swollen battery is a safety hazard and should be replaced when ready. Do not try to open the phone yourself. Take it to Apple or a repair shop right away — a swollen battery can catch fire or leak chemicals. Tell them the battery is swollen when you call so they know to prioritize it. Most shops will fit you in the same day for a safety issue like this.

Does Apple replace batteries for free if my phone is under warranty?

Apple covers battery replacement at no cost if your phone is under the one-year limited warranty and the battery has degraded to 80% capacity or below due to a manufacturing defect. If the battery failed because of physical damage or liquid exposure, it is not covered. If you have AppleCare+, battery replacement is covered for the full term of the plan. Check your coverage in the Apple Support app.