iPhone 6 battery replacement: complete DIY guide

Yes, you can absolutely do an iPhone 6 battery replacement yourself, and it's one of the more beginner-friendly phone repairs out there. You need about 30 minutes, a few basic tools, and a quality replacement battery for iPhone 6, and your phone will feel like new again.

Why your iPhone 6 battery needs replacing

The iPhone 6 launched in 2014 with a 1,810 mAh lithium-ion battery. Lithium-ion cells degrade with every charge cycle. Apple considers a battery "consumed" once it drops below 80% of its original capacity, which typically happens somewhere between 300 and 500 full charge cycles. If you've owned your iPhone 6 for more than two or three years, there's a good chance the battery is already there or past it.

Signs you need a battery iphone 6 replacement:

• Phone dies at 20%, 30%, or even 50% charge
• Battery percentage jumps around unpredictably
• Phone shuts off in the cold
• Battery health reads below 80% in Settings > Battery > Battery Health
• Device feels warm even during light use
• You're charging it twice a day just to get through

Any one of those symptoms is reason enough to replace an iPhone 6 battery. All of them together means do it today.

What you'll need before you start

Getting your tools together first saves a lot of frustration mid-repair. Here's the list:

• Replacement battery for iPhone 6 (more on picking the right one below)
• Pentalobe P2 screwdriver (for the two screws at the bottom of the phone)
• Phillips #000 screwdriver
• Plastic spudger or opening pick
• Suction cup
• Tweezers
• Isopropyl alcohol (90% or higher) and a lint-free cloth
• A small container for screws (a muffin tin works great)

Most good battery kits include the pentalobe and Phillips drivers plus a spudger, so check what's in the box before you order extras. If you're browsing parts, the Apple iPhone 6 Replacement parts collection has everything you'll need for this repair in one place.

How to pick a good replacement battery for iPhone 6

Not all cells are equal. A cheap battery from a random marketplace listing might last six months before it starts swelling or losing capacity fast. Here's what to look for:

• Capacity close to OEM spec: The original is 1,810 mAh. A quality replacement battery iphone 6 should match that. Be skeptical of anything claiming 2,200 mAh or more in the same physical form factor, the math doesn't work.
• Proper connector type: The iPhone 6 uses a Zero Insertion Force (ZIF) connector. Make sure the replacement matches.
• Pre-installed adhesive strips: Good batteries come with adhesive pull tabs already applied so you're not fumbling with separate strips.
• Tested before shipping: Look for parts that are tested for capacity, voltage, and no swelling before they leave the warehouse.

You can find quality options in the full Replacement Batteries for Phones & Tablets collection, which covers iPhone, Android, and tablet cells with fast US shipping.

Step-by-step: how to replace an iPhone 6 battery

Step 1: power down and prep the phone

Hold the power button, slide to power off. Don't skip this step. You're about to disconnect a live battery connector, shutting down first protects both you and the board. If the battery is below 25% charge, that's actually ideal. Less energy in the cell equals less risk if something goes wrong.

Step 2: remove the two pentalobe screws

They're at the bottom of the phone, flanking the Lightning port. Both are 3.6 mm long. Keep them together in your screw container. These are easy to lose and they're a pain to replace.

Step 3: open the display assembly

Place a suction cup just above the home button. Pull with steady upward pressure while you slide a plastic opening pick into the seam on the right side of the phone. Work the pick around the bottom and sides to release the clips. The screen lifts from the bottom like a book opening to the right. Do not yank it open. There are three cables on the right side near the top of the phone that connect the display to the board. Open it only about 90 degrees and prop it up or hold it gently.

Step 4: disconnect the display cables

Use the Phillips #000 screwdriver to remove the single screw holding the display cable bracket. Lift the bracket off with tweezers. Now use a spudger to pop up each of the three connectors, front camera/sensor cable first, then the digitizer, then the LCD. They click up like little snaps. Set the display assembly aside on a clean surface.

Step 5: remove the battery connector bracket and disconnect the battery

There's a small metal bracket over the battery connector near the top left of the battery. It's held by two Phillips screws. Remove both screws, lift the bracket off, and then use a spudger to gently lever up the battery connector from its socket. Work from the side, not from the end, to avoid bending the connector or damaging the socket on the board.

Step 6: remove the old battery

The iPhone 6 battery is held in with adhesive pull tabs, similar to the ones Apple started using around this era. You'll see two white or black pull tabs extending from under the bottom edge of the battery. Pull each one slowly at a low angle, almost parallel to the back of the phone. Pull steadily and don't jerk. If they snap before releasing the battery, use a few drops of isopropyl alcohol along the edge of the battery to soften the remaining adhesive, wait 30 seconds, and use a plastic spudger to carefully pry the battery up from the bottom. Never use metal tools to pry at the battery itself, puncturing a lithium-ion cell is a fire hazard.

Step 7: clean and prep for the new battery

Wipe the battery tray with isopropyl alcohol on a lint-free cloth to remove any adhesive residue. Let it dry fully before installing the new cell. This gives the new adhesive tabs a clean surface to bond to.

Step 8: install the replacement battery for iPhone 6

Peel the backing off the new adhesive strips. Lower the battery into the tray, connector end first toward the top of the phone. Press down firmly for about 30 seconds to bond the adhesive. Connect the battery connector by pressing it straight down into the socket until you feel it click. Replace the connector bracket and its two screws.

Step 9: reconnect the display and close up

Reconnect the three display cables in reverse order. LCD first, then digitizer, then front camera/sensor cable. Each one clicks down. Replace the cable bracket and its screw. Fold the display back down onto the phone, pressing around the edges until all the clips snap into place. Replace the two pentalobe screws at the bottom.

Step 10: first boot and battery calibration

Hold the power button to turn on. The phone should boot normally. Charge the phone to 100%, then use it until it shuts off on its own, then charge back to 100% without interruption. This one full cycle helps calibrate the battery percentage readout. After that, just charge normally, you don't need to do full drain cycles regularly, as that actually wears lithium-ion cells faster.

Common mistakes to avoid

• Forcing the screen open too far: 90 degrees is the limit before you risk tearing a display cable. Those cables are thin and don't give much warning before they snap.
• Losing the screws: The iPhone 6 uses several different screw lengths. Mix them up and you'll get a screw punching through your board. Use a screw mat or label small pieces of tape with the screw position.
• Skipping the alcohol clean: Adhesive on adhesive won't hold. The new battery will rattle or shift if you don't clean the tray.
• Using metal spudgers on the battery: Plastic only. Every time.
• Not checking the battery health after: Go to Settings > Battery > Battery Health right after the repair. A new cell should read 100% or very close to it.

How much does iPhone 6 battery replacement cost?

DIY is by far the cheapest route. A quality replacement battery for iPhone 6 typically runs $10 to $20 depending on the seller and kit contents. If you already have tools, you might spend as little as $10 all in. Repair shops usually charge $40 to $80 for the same job, most of which is labor. Apple's out-of-warranty battery replacement fee for older models has historically been around $49 to $69 at the Genius Bar, and that's before any wait time.

Doing it yourself cuts the cost by half or more, and you get the satisfaction of knowing exactly what part went into your phone.

Other iPhone 6 repairs worth knowing about

Once you've got the phone open, it's worth inspecting the display cables and the charge port while you're in there. A cracked screen or unresponsive digitizer are the next most common repairs on aging iPhone 6 units. The Apple iPhone 6 Replacement parts page has screens, charge ports, cameras, and more.

If you repair other phones too, check out the battery guides on our repair blog. The Pixel 4a 5G Battery Replacement: Cost & Guide, the Pixel 5 Battery Replacement: Cost & DIY Guide, and the Pixel 5a Battery Replacement: Cost & DIY Guide follow a similar format and are worth bookmarking if you work on Google Pixels. Browse all our repair guides at phonepartpro.com/blogs/news.

And if you're working on an iPhone 8 at the same time, the back glass is another common repair on that model. We carry the Back Glass for iPhone 8 - Space Grey (NL) and the Back Glass for iPhone 8 - Silver (NL) if you need those.

FAQ

How much for iPhone 6 battery replacement?

DIY battery replacement on the iPhone 6 costs roughly $10 to $20 for the part itself, depending on whether you need a tool kit included. A repair shop will typically charge $40 to $80 for the same job. Apple's own out-of-warranty service for older iPhones has historically been $49 to $69, not counting any diagnostic fees or wait times.

How much is battery replacement for iPhone 6 Plus?

The iPhone 6 Plus battery is slightly larger at 2,915 mAh, so replacement cells tend to cost a little more than the standard 6. DIY parts generally run $15 to $25. Shop labor is usually in the $50 to $85 range, and Apple's historical pricing for out-of-warranty service has been similar to the standard 6 at $49 to $69.

How much for iPhone 6 Plus battery replacement?

Same answer as above. Expect to pay $15 to $25 for a good replacement cell if you do it yourself, or $50 to $85 at a local shop. The repair procedure is almost identical to the standard iPhone 6, just a bigger form factor to work with.

Where to buy replacement battery for iPhone 6?

You can buy a replacement battery for the iPhone 6 right here at PhonePartPro. We ship fast across the US and carry tested cells alongside the tools you'll need for the job. Check the Replacement Batteries for Phones & Tablets collection or go straight to the Apple iPhone 6 Replacement parts page.

What is the best replacement battery for iPhone 6 Plus?

The best replacement battery for the iPhone 6 Plus is one that matches the original 2,915 mAh capacity, comes with pre-installed adhesive tabs, and has been tested before shipping. Avoid cells that claim dramatically higher capacities than OEM spec, they rarely perform as advertised and can swell faster. A quality cell from a reputable parts supplier with clear capacity specs is the way to go.

What is the best battery replacement for iPhone 6?

Look for a cell as close to the original 1,810 mAh spec as possible, with a ZIF-compatible connector, pre-applied adhesive strips, and some form of quality testing before it ships. A kit that includes the pentalobe and Phillips drivers is worth the small extra cost if you don't already own those tools.

How much for battery replacement iPhone 6 Plus?

DIY runs about $15 to $25 for the part. Professional repair shops charge roughly $50 to $85 depending on your area. Apple's historical out-of-warranty pricing has been around $49 to $69 for older models, and turnaround time varies by location.

Can you get a replacement battery for iPhone 6?

Yes, absolutely. Replacement batteries for the iPhone 6 are widely available and the repair is very DIY-friendly. The iPhone 6 was one of the first iPhones to use adhesive pull tabs for battery removal, which makes the swap cleaner than earlier models that used strong permanent adhesive.

Can you buy replacement battery for iPhone 6?

Yes, you can buy a replacement battery for the iPhone 6 from PhonePartPro with fast US shipping. We stock iPhone 6 batteries alongside all the tools you need for the repair. Head to the Apple iPhone 6 Replacement parts page to see current stock.