You can replace your iPhone 11 battery yourself using a kit, or have Apple or a repair shop do it for you

An iPhone 11 battery replacement takes about 30 to 45 minutes if you do it yourself with a kit, or one to three business days if you go through Apple. The battery itself costs $29 to $69 depending on where you buy it, plus tools if you don't have them. Apple charges $69 for the replacement service. A third-party repair shop typically charges $40 to $80 total. The choice depends on whether you're comfortable opening your phone, how much time you have, and whether you want a warranty on the work.

The DIY route saves money but requires patience during screen separation—the most common point of failure. Apple's official service costs more but includes a warranty and handles the risk for you. Third-party shops split the difference: faster than Apple, cheaper than Apple, but with variable warranty coverage depending on the shop.

Key Takeaways

  • DIY replacement requires a heat gun or hair dryer, a pentalobe screwdriver, a plastic spudger, and a battery kit—total cost around $30 to $50 if you buy everything new.
  • Apple's official replacement service costs $69 and includes a warranty, but takes several business days and requires an appointment at an Apple Store or authorized service provider.
  • Third-party repair shops offer faster turnaround (often same-day) and lower cost than Apple, but warranty coverage varies by shop.
  • The hardest part of DIY replacement is separating the screen without cracking it; rushing this step is the most common reason the repair fails.
  • Your iPhone 11 battery is glued in place, so you'll need adhesive strips or a strong adhesive to find the new battery after installation.

What you need to do a DIY battery replacement

Gather these tools before you start: a heat gun or hair dryer to soften the adhesive holding the screen, a pentalobe screwdriver (the five-pointed star shape used on iPhones), a plastic spudger or thin plastic pry tool, a suction cup to lift the screen, and isopropyl alcohol to clean the frame. You'll also need the iPhone 11 battery replacement kit, which includes the new battery and usually adhesive strips to hold it in place. Most kits cost $25 to $40 on Amazon or eBay.

A pentalobe screwdriver is not a standard tool—you can't use a regular Phillips head. Buy one for $5 to $10, or order a full iPhone repair kit for $20 to $35 that includes the screwdriver, spudger, suction cup, and adhesive. If you already have a heat gun from other projects, you can skip buying one; a hair dryer on high heat works but takes longer. Do not use a microwave or open flame.

Step-by-step DIY replacement process

Step 1: Power off and remove the SIM tray. Turn off your iPhone completely. Use the SIM ejector tool (the tiny pin that came with your phone) to pop out the SIM card tray on the right side of the phone. This prevents accidental damage during disassembly.

Step 2: Heat the edges and separate the screen. Use a heat gun on low or a hair dryer on high, held 3 to 4 inches away, to warm the edges of the screen for 30 to 60 seconds. The goal is to soften the adhesive, not to make the phone too hot to touch. Place the suction cup on the screen near the bottom edge and pull gently while using the plastic spudger to work into the gap. Move slowly around the edges—this step takes 5 to 10 minutes. Do not pry hard or you will crack the screen. If the screen won't budge, heat it again.

Step 3: Disconnect the battery connector. Once the screen is lifted enough to see inside, locate the battery connector—a small rectangular plug near the top of the phone. Use the plastic spudger to gently disconnect it by prying the connector straight up. This prevents electrical damage while you work.

Step 4: Remove the old battery. The battery is glued to the frame with strong adhesive. Use the plastic spudger to carefully pry up one corner, then work your way around the edges. This takes patience—go slowly to avoid puncturing the battery, which can be dangerous. Once you have a corner lifted, you can pull on the adhesive strips underneath if they're visible. The whole removal usually takes 5 to 10 minutes.

Step 5: Clean the frame and install the new battery. Wipe the battery area with a cloth dampened in isopropyl alcohol to remove old adhesive residue. Let it dry completely. Peel the backing off the adhesive strips on the new battery (or explore new adhesive strips if your kit includes them separately), then press the new battery firmly into place, making sure the connector aligns with the socket.

Step 6: Reconnect and reassemble. Plug the battery connector back in by pressing it straight down until it clicks. Carefully lower the screen back into place, starting at the top and working down. Press firmly around all edges to reseal the adhesive. Let the phone sit for 30 minutes before powering it on to allow the adhesive to set.

Using Apple's official replacement service

Visit apple.com or call 1-800-MY-APPLE to schedule a Genius Bar appointment at your nearest Apple Store, or find an Apple Authorized Service Provider in your area. You can also mail your phone to Apple through their mail-in repair service. The battery replacement costs $69 and includes a one-year warranty on the repair. Apple will back up your data before the repair, though you should back up yourself beforehand just to be safe.

Turnaround time is typically one to three business days if you drop it off at a store, or five to seven business days for mail-in service. If your iPhone 11 is still under AppleCare+ coverage, the battery replacement is free if the battery health has degraded below 80 percent. Bring your phone and a valid ID to your appointment.

Third-party repair shops and when to use them

Independent phone repair shops in your area often charge $40 to $80 for an iPhone 11 battery replacement and can usually complete it the same day or within 24 hours. Search "iPhone repair near me" or check Google Maps reviews to find shops with high ratings. Ask about their warranty—reputable shops offer at least 30 days of coverage on the repair.

The trade-off is that third-party shops are not Apple-certified, so the battery and adhesive may not be OEM (original equipment manufacturer) parts. This rarely causes problems, but it means you're relying on the shop's quality control rather than Apple's. Always ask what brand of battery they use and whether they test the phone after the repair. Avoid shops that won't answer these questions or have consistently low reviews.

Common mistakes to avoid during DIY replacement

The most frequent error is cracking the screen while separating it from the frame. This happens when you pry too hard or heat unevenly. Go slowly, heat the edges again if needed, and use the suction cup to do most of the lifting work. The spudger should only widen the gap, not force it open.

A second common mistake is forgetting to disconnect the battery connector before removing the old battery. If you accidentally short the connector while the battery is still plugged in, you can damage the phone's logic board. Always disconnect first, even though it adds a step. The third mistake is installing the new battery without enough adhesive or with old adhesive residue underneath. A loose battery can shift inside the phone and damage the connector, or the screen may not seal properly. Clean the frame thoroughly and use the adhesive strips that come with the kit—don't skip this step to save time.

How to check your iPhone 11 battery health before replacing it

Go to Settings > Battery > Battery Health & Charging to see your maximum capacity percentage. If it's above 80 percent, your battery is still in good condition and may not need replacement yet. Between 80 and 70 percent, the battery is degraded but still functional—you'll notice shorter battery life but the phone will work normally. Below 70 percent, replacement is worth considering. Below 50 percent, the phone may shut down unexpectedly even when the battery shows charge remaining.

This screen also shows whether your battery is in "peak performance condition" or if iOS has enabled "performance management" to prevent unexpected shutdowns. If performance management is on and your battery health is low, replacing the battery will restore full performance. If your battery health is above 80 percent but you're still having power issues, the problem may be software rather than hardware—try backing up and restoring your phone before spending money on a battery.

Frequently Asked Questions

Can I replace the iPhone 11 battery without removing the screen?

No. The battery is located directly behind the screen and is glued to the frame, so you must separate the screen to reach it. There is no other access point. This is why screen separation is the most time-consuming and risky part of the repair.

What happens if I crack the screen while replacing the battery?

You'll need to replace the screen as well, which adds $150 to $250 to your repair cost. This is why many people choose to have Apple or a repair shop do the battery replacement instead—they have the tools and experience to avoid screen damage. If you do crack it, you can still complete the battery replacement, but you'll need to order a replacement screen kit and repeat the separation process.

Is it safe to use a third-party battery instead of an Apple battery?

Yes, as long as it's from a reputable manufacturer. Third-party batteries must meet the same voltage and capacity specifications as Apple batteries to work safely. The main difference is that third-party batteries may not last quite as long or hold charge as consistently over time. Avoid extremely cheap batteries from unknown sellers, as these are more likely to be counterfeit or defective.

How long does an iPhone 11 battery last after replacement?

A new battery should last two to three years under normal use before capacity drops below 80 percent again. This depends on how often you charge it and whether you use features like location services and background app refresh. A battery that degrades faster than expected may be defective—contact the seller or repair shop within the warranty period if this happens.

Do I need to recalibrate the battery after replacing it?

No. Modern iPhones calibrate the battery automatically over the first few charge cycles. Just use your phone normally—charge it to 100 percent, let it drain to low battery, then charge it again. After two or three cycles, the battery health percentage should stabilize and become accurate.