Yes, you can replace an iPhone battery, but Apple and most repair shops handle it more safely
You can physically remove and install a new battery in most iPhone models yourself. The process involves opening the phone, disconnecting the old battery, and connecting a new one. However, Apple's official route — taking your phone to an Apple Store or an Apple Authorized Service Provider — costs between $69 and $99 depending on your model and whether your phone is under warranty, and it takes one to three days.
The real question is whether you should do it yourself. iPhones use adhesive to hold the battery in place, and the battery sits near the display. If you explore too much heat or pry too hard, you can crack the screen, damage the logic board, or puncture the battery itself — which can cause a fire. A punctured lithium battery is a genuine safety hazard. If you decide to try it anyway, you need the right tools: a heat gun or hair dryer, a plastic spudger (not metal), a pentalobe screwdriver, and tweezers. You also need a replacement battery from a reputable source, not a counterfeit.
Key Takeaways
- Apple charges $69 to $99 to replace your battery and typically completes the work in one to three days.
- Opening an iPhone yourself risks cracking the screen, damaging internal components, or puncturing the battery, which can cause a fire.
- Third-party repair shops often charge $30 to $60 and may complete the work the same day, but quality varies widely.
- If your iPhone is still under warranty or covered by AppleCare+, battery replacement may be free if the battery has degraded below 80 percent capacity.
- A new battery typically restores an iPhone to full performance if the phone is otherwise in good condition.
What Apple charges and what the warranty covers
If your iPhone is under the standard one-year limited warranty and the battery has degraded due to a manufacturing defect, Apple replaces it for free. In practice, this is rare — Apple's warranty covers defects, not normal wear. Most iPhones lose battery capacity over time straightforward from use.
If you have AppleCare+, battery replacement is free as long as the battery capacity has dropped below 80 percent. You can check your battery health in Settings > Battery and Device Care > Battery Health & Charging. If you do not have AppleCare+ and your phone is out of warranty, Apple charges a flat fee: $69 for iPhone 15, 14, 13, and 12 models; $79 for iPhone 11 and XS models; $99 for older models. AppleCare+ itself costs $99 to $149 upfront depending on the model, plus $29 per incident for accidental damage.
Apple's battery replacement includes a new battery, labor, and a 90-day warranty on the repair itself. The phone stays in working condition throughout the process, and you get it back with the same data and settings.
Third-party repair shops: cost, speed, and risk
Independent phone repair shops typically charge $30 to $60 for a battery replacement and often complete the work the same day or within a few hours. This is significantly cheaper than Apple, and the speed is a real advantage if you need your phone back quickly.
The trade-off is consistency. Not all third-party shops use genuine Apple batteries. Some use aftermarket batteries that may not hold a charge as long, may not report accurate health data to your phone, or may fail sooner. A few use counterfeit batteries, which carry safety risks. Before you choose a shop, ask whether they use genuine Apple batteries or certified aftermarket batteries, and whether they offer a warranty on the replacement. A reputable shop will answer both questions directly and provide a written receipt.
Check reviews on Google Maps or Yelp for the specific location you plan to visit, not just the chain name. A shop with 4.5+ stars and recent reviews mentioning battery work is usually a safer bet than one with sparse or mixed feedback.
DIY battery replacement: tools, steps, and real risks
If you decide to replace the battery yourself, you will need a heat gun or hair dryer, a plastic spudger, a pentalobe screwdriver (P2 size for most models), tweezers, and a replacement battery. iFixit sells kits that include most of these tools plus a battery for $30 to $50. You will also need a clean, well-lit workspace and at least 30 to 45 minutes.
The basic steps are: power off the phone, heat the edges to soften the adhesive, carefully pry open the back panel, disconnect the battery connector, remove the adhesive strips holding the old battery, install the new battery, reconnect the connector, and seal the phone back up. iFixit and YouTube have detailed guides with photos for nearly every iPhone model.
The real risks are these: if you explore too much heat, you can warp the frame or damage the display. If you pry too hard, you can crack the screen or bend the logic board. If you puncture the battery with a metal tool, it can catch fire when ready or fail dangerously later. If you reassemble the phone incorrectly, water resistance is compromised. If the replacement battery is counterfeit or low-quality, it may not charge properly, may overheat, or may fail within weeks.
Apple and repair shops have the tools and training to do this safely. If you are not confident in your ability to work with small electronics, the $69 to $99 Apple charges is insurance against a much more expensive mistake.
How to know if your battery actually needs replacement
Your iPhone battery degrades naturally over time. Apple considers a battery "worn out" when it holds less than 80 percent of its original capacity. You can check this in Settings > Battery and Device Care > Battery Health & Charging (on iPhone 15 and later) or Settings > Battery > Battery Health & Charging (on iPhone 11 through 14).
If your battery health is above 80 percent, your phone is working as designed. If it is between 80 and 70 percent, you may notice the phone drains faster than it used to, but it is not yet at the point where replacement is necessary. Below 70 percent, most people notice a real difference in how long the phone lasts through a day.
If your phone shuts down unexpectedly even when the battery percentage shows 20 or 30 percent, that is a sign the battery is failing and replacement will help. If your phone is straightforward slow, a battery replacement will not fix that — slowness usually comes from storage being full, too many apps running, or an older processor.
Comparing your options side by side
| Route | Cost | Time | Risk | Warranty |
|---|---|---|---|---|
| Apple Store or Authorized Service Provider | $69–$99 (free with AppleCare+ if below 80%) | 1–3 days | None | 90 days on repair |
| Third-party repair shop | $30–$60 | Same day to a few hours | Low if shop is reputable; higher if battery is counterfeit | Varies; usually 30–90 days |
| DIY with kit | $30–$50 | 30–45 minutes | High: screen damage, battery puncture, water damage | None; you own any mistakes |
What happens after the battery is replaced
Once a new battery is installed and the phone is reassembled, your iPhone should feel noticeably faster and more responsive if the old battery was severely degraded. The phone will hold a charge longer, and you will not see unexpected shutdowns. Battery health will reset to 100 percent (or close to it, depending on the battery source).
If your phone was slow before the replacement and the slowness continues after, the problem was not the battery. Slowness usually comes from a full storage drive, too many background apps, or an older processor that straightforward cannot keep up with newer software. A battery replacement will not fix those issues.
Most people find that a new battery extends the useful life of their phone by one to three years, depending on how much they use it. If your phone is otherwise in good condition — no cracks, no water damage, no major software problems — a battery replacement is usually worth the cost.
Frequently Asked Questions
Will replacing the battery void my warranty?
No. If you have Apple replace the battery, the warranty stays intact. If you use a third-party shop or do it yourself, you lose any remaining manufacturer warranty on the phone itself, though the repair shop may offer a separate warranty on the battery work. AppleCare+ also remains valid after an Apple battery replacement.
Can I use my phone while the battery is being replaced?
No. The phone must be powered off and opened to access the battery. At Apple, the process takes one to three days. At a third-party shop, it usually takes a few hours. You will not be able to use the phone during that time.
Is a used or refurbished battery safe?
Used batteries are not recommended. A used battery has already lost some capacity and will degrade faster than a new one. Refurbished batteries from reputable sources (Apple, certified repair shops) are generally safe, but a new battery is always the better choice if cost allows.
What should I do if my phone battery is swollen?
Stop using the phone when ready and take it to Apple or a repair shop. A swollen battery is a sign of internal failure and can catch fire. Do not try to open the phone yourself or leave it plugged in. This is a safety issue, not just a performance issue.
Does a new battery improve performance on an older iPhone?
A new battery will restore the phone to its original speed if the old battery was severely degraded. However, if your iPhone is several years old, iOS updates may have slowed it down for other reasons — full storage, too many apps, or the processor itself being outdated. A battery replacement alone will not fix those problems.