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Product Details

Is your iPhone 12 or 12 Pro draining fast, shutting down early, not turning on or showing a Service message in Battery Health? A worn battery is usually the cause. This is a new 2815mAh replacement (battery model A2479).
Also available for the iPhone 12 / 12 Pro: Diagnostic Battery (no Unknown Part message)
- TEXAS INSTRUMENTS FUEL GAUGE CHIP - The same brand of chip Apple uses, reporting temperature, voltage and charge to your iPhone.
- NO SURPRISE SHUTDOWNS - Accurate readings help your iPhone charge safely, stop at full and show a true percentage, so no sudden drops or early shutdowns like low-grade chips cause.
- ZERO CYCLE CELL - A brand new cell, never used in a phone, so you start with its full life.
- FULL 2815mAh CAPACITY - Rated at 2815mAh, the same as the battery Apple fitted to the iPhone 12 and 12 Pro.
- BATTERY HEALTH SHOWS - On iOS 18.1 or later, Settings shows the new battery's Battery Health and maximum capacity, so you can keep an eye on it.
- SENT FROM NZ STOCK - Shipped from our New Zealand stock, so there's no waiting weeks for a part to arrive from overseas.
Part Includes:
- iPhone 12 / 12 Pro Replacement Battery
- Battery Adhesive Strips
- 12 Month Warranty
Please Note
Does NOT fit the iPhone 12 mini or 12 Pro Max. Check in Settings, General, About for your model.
Please Note
New stretch-release adhesive strips with pull tabs come in the box, so the battery sits secure and can come out cleanly next time.
Please Note
Aftermarket battery, not an official Apple part. iOS shows "Unable to verify this iPhone has a genuine Apple battery" and lists it as an Unknown Part. The battery works normally.
Specifications
- Compatible Part Numbers: A2479, 661-17920
- Voltage: 3.83V
- Watt Hours: 10.78Whr
- Capacity: 2815mAh
- Chipset: Texas Instruments
- Battery Type: Lithium-ion polymer
- Condition: Brand new cell
- Pairing: iOS shows an Unknown Part message in Settings, and the battery works normally.
- Warranty: 12 Months
Compatible Model Numbers
iPhone 12Model Number (A Number)
- A2172
- A2402
- A2403
- A2404
iPhone 12 Model Numbers
Model Identifier
- iPhone13,2
EMC Number
- EMC 3542
- EMC 3543
- EMC 3544
Device Number (M Number)
- MGEF3
- MGEG3
- MGEH3
- MGEK3
- MGEQ3
- MGER3
- MGET3
- MGEU3
- MGEV3
- MGEW3
- MGEX3
- MGF03
- MGF13
- MGF23
- MGF33
- MGF43
- MGF53
- MGF63
- MGF73
- MGF83
- MGF93
- MGFA3
- MGFC3
- MGFD3
- MGFE3
- MGFF3
- MGFG3
- MGFH3
- MGFJ3
- MGFK3
- MGFL3
- MGFM3
- MGFN3
- MGFP3
- MGFQ3
- MGFR3
- MGFT3
- MGFW3
- MGFX3
- MGFY3
- MGG03
- MGG13
- MGG23
- MGG33
- MGG43
- MGG53
- MGG63
- MGG73
- MGG83
- MGG93
- MGGA3
- MGGC3
- MGGD3
- MGGE3
- MGGF3
- MGGG3
- MGGH3
- MGGJ3
- MGGK3
- MGGL3
- MGGM3
- MGGN3
- MGGP3
- MGGQ3
- MGGT3
- MGGU3
- MGGV3
- MGGW3
- MGGX3
- MGGY3
- MGH13
- MGH23
- MGH33
- MGH43
- MGH53
- MGH63
- MGH73
- MGH83
- MGH93
- MGHA3
- MGHC3
- MGHD3
- MGHE3
- MGHF3
- MGHG3
- MGHH3
- MGHJ3
- MGHK3
- MGHL3
- MGHM3
- MGJ53
- MGJ63
- MGJ73
- MGJ83
- MGJ93
- MGJA3
- MGJC3
- MGJD3
- MGJE3
- MGJF3
- MGJG3
- MGJH3
- MGJJ3
- MGJK3
- MGJL3
iPhone 12 ProModel Number (A Number)
- A2341
- A2406
- A2407
- A2408
iPhone 12 Pro Model Numbers
Model Identifier
- iPhone13,3
EMC Number
- EMC 3545
- EMC 3546
- EMC 3547
Device Number (M Number)
- MGJM3
- MGJN3
- MGJP3
- MGJQ3
- MGJR3
- MGJT3
- MGJU3
- MGJV3
- MGJW3
- MGJX3
- MGJY3
- MGK03
- MGK13
- MGK23
- MGK33
- MGK43
- MGK53
- MGK63
- MGK73
- MGK93
- MGKA3
- MGKC3
- MGKE3
- MGKF3
- MGKG3
- MGKH3
- MGKJ3
- MGKK3
- MGKL3
- MGKM3
- MGKN3
- MGKP3
- MGKQ3
- MGKR3
- MGKT3
- MGKU3
- MGKV3
- MGKW3
- MGKX3
- MGKY3
- MGL03
- MGL23
- MGL33
- MGL43
- MGL53
- MGL63
- MGL73
- MGL83
- MGL93
- MGLA3
- MGLC3
- MGLD3
- MGLE3
- MGLF3
- MGLG3
- MGLH3
- MGLJ3
- MGLK3
- MGLL3
- MGLM3
- MGLN3
- MGLP3
- MGLQ3
- MGLR3
- MGLT3
- MGLU3
- MGLV3
- MGLW3
- MGLX3
- MGLY3
- MGM23
- MGM43
- MGMK3
- MGML3
- MGMM3
- MGMN3
- MGMP3
- MGMQ3
- MGMR3
- MGMT3
- MGMU3
- MGMV3
- MGMW3
- MGMX3
Installation Help
Check out the video above or the step by step guide below for assistance with this repair
iFixit iPhone 12 Battery Replacement Guide
iFixit iPhone 12 Pro Battery Replacement Guide
Remember
After completing your repair, calibrate your newly installed battery by charging it to 100% and then charging for a further two hours. Use your iPhone until it shuts off due to low battery, and finally, charge it uninterrupted to 100% again
Here are some tools you may need to help you complete the repair.
Please note: A discounted simple toolset with the tools you need is available in a pop-up when you add this product to cart
- P2 Metal Pentalobe 0.8mm Screwdriver Tool
- Y000 Metal Triwing Tri-Point 0.6mm Screwdriver Tool
- #000 1.5mm Metal Phillips Screwdriver Tool (PH000)
- Large Blue Suction Cup Opening Tool
- Mechanic AK-15 King ESD Anti-Static Stainless Steel Red Curved Tweezers
- iGadget Plastic Triangle Opening Picks (set of 5)
- 5x iGadget Plastic Flexible Opening Cards
- Nylon Antistatic Spudger Pry Tool
- Or get the P2, Y000 and #000 screwdrivers, suction cup, tweezers, opening pick, opening card and spudger together in our 8 Piece iPhone Repair Toolkit
- Metal Stand-Off 2.5mm Screwdriver Tool
- uFix iOpener Microwaveable Heated Bag Opening Tool
- iGadget Plastic Alcohol 200mL Bottle with Pump Top
- iPhone 12 / 12 Pro OLED Water Resistant Screen Gasket Adhesive
- iGadget Universal Magnetic Work Project Mat with Marker (30cm x 25cm)
Here are some helpful tips to assist you in completing a safe repair on your device. If you are unsure of something or have any questions, please feel free to contact us either by phone (0508 IGADGET) or by email
- Drain the battery below 25%, power the phone off and take out the SIM tray before you start, as the SIM card reader comes out later. A charged lithium-ion battery can catch fire if it's punctured or damaged
- Remove the pentalobe screws by the Lightning port. Warm the edges with the iOpener in short bursts to protect the battery. Lift the bottom edge with a suction cup and work an opening pick around, no more than 3mm deep, and only 2mm along the left edge where the display cables run
- Open the screen from the right-hand side like a book and support it until its cables are unplugged
- Track your screws on a magnetic mat or tape them to a drawing of your phone. They're different lengths, and a long screw in a short hole can damage the logic board
- Always unplug the battery before you remove any other parts. Keep metal tools away from the battery, and never bend, crush or puncture it.
- Remove the battery and display connector cover, unplug the display, digitiser and front sensor cables and lift the screen off. Remove the loudspeaker, then the SIM card reader and Taptic Engine (both have standoff screws) to reach the battery
- Four stretch-release strips hold the battery, two on the bottom edge and two on the top. Pull each slowly towards the bottom of the phone, low and flat; winding it around your tweezers. Hold the battery as you pull. If a strip breaks, drip isopropyl alcohol under that edge, wait a minute, then lift the battery slowly with a plastic card
- Push the SIM eject plunger back into the frame before you refit the SIM card reader. Clean off old adhesive and fit the new adhesive strips from the box. Press the battery connector down until it clicks, then check the phone powers on and charges before you seal it up
- Clean off the old screen adhesive with isopropyl alcohol and fit a new screen gasket adhesive before you close it up
- If the new battery drains fast or shuts off, reseat the battery connector, check it for foam or debris and make sure the flex isn't strained, then do a force restart
Caution
If the new battery or the battery in your device is swollen or damaged during repair, take the proper precautions
Note
You cannot dispose of old batteries in your general waste. Find recycling e-waste centres online or take to your local refuse station.
What's In The Box
- 1x iPhone 12 / 12 Pro Replacement Battery
- 1x Replacement Battery Adhesive

In Stock