Pairing Ready, Standard or Cell Only: which to choose
All three replace a worn iPhone 12 / 12 Pro battery. The difference is what happens to the battery IC, the small board that tells iOS which battery is fitted, and that decides what the phone shows afterwards.
| Feature | Pairing Ready (this part) | Standard | Cell Only |
|---|
| What you get | Complete battery with a pre-paired chip, adhesive pre-applied | Complete battery with its own new IC, adhesive pre-applied | Bare cell, no IC board, adhesive included |
| Your original battery IC | Replaced | Replaced | Soldered onto the new cell |
| Parts and Service History | “Genuine” (marked “Used”) | “Unknown” | Reads as your original battery |
| Battery Health | Shows a percentage | Shows a percentage from iOS 18 | Comes from the data stored on your original IC |
| Skill needed | A standard battery swap, then Restart & Finish Repair | A standard battery swap | Micro-soldering |
| Best for | No Unknown message and no soldering | A straightforward, lower-cost swap | Keeping the phone reading the battery it already had |
Choose Pairing Ready when the phone should show a “Genuine” battery rather than “Unknown”, without soldering. The Standard battery is the lower-cost straight swap, and Cell Only keeps the phone’s original IC for technicians who solder.
About the iPhone 12 / 12 Pro pairing ready battery
This is an aftermarket replacement battery for the iPhone 12 / 12 Pro: a new lithium-ion polymer cell with a pre-paired chip, and the adhesive already applied. It fits as a straight battery swap, with no soldering, and finishes with a step in iOS.
The iPhone 12 / 12 Pro was released in 2020. At 2815 mAh it sits between the iPhone 12 mini (2227 mAh) and the iPhone 12 Pro Max (3687 mAh) in the iPhone 12 line-up. The iPhone 12 / 12 Pro is opened from the screen side, so the display comes off before the battery can be reached.
The original iPhone 12 / 12 Pro battery carries model number A2479 on its label. Checking it against the old battery before you start confirms you have the right replacement.
Important information
- This is an aftermarket replacement battery with a pre-paired chip, not an Apple original part.
- The “Genuine” label in Parts and Service History comes from the pre-paired chip. The cell itself is aftermarket.
- GA Tech NZ is not affiliated with, authorised by, or endorsed by Apple Inc.
- Apple and iPhone are trademarks of Apple Inc., used here only to identify the device this part fits.
What iOS shows after the swap
Once Restart & Finish Repair has run, Parts and Service History lists the battery as “Genuine”, marked “Used”, instead of “Unknown”, and Battery Health shows a percentage: 100% on a new battery. Apple uses “Used” for a part that was already used or installed in another iPhone, and that is how iOS reads the pre-paired chip, even though the battery is new.
Restart & Finish Repair is part of Apple’s Repair Assistant, which Apple offers on the iPhone 12 and later. It needs Wi-Fi, more than 20% charge and the latest version of iOS. If another part in the phone already shows as “Unknown”, such as an aftermarket screen, Restart & Finish Repair may not complete, so check Parts and Service History before you start.
We have confirmed this battery on iOS 26. Apple can change how iOS treats replacement parts in any update, so we cannot promise how future versions will behave. Apple explains the labels in its guides to Parts and Service History and Repair Assistant.
iPhone 12 / 12 Pro Pairing Ready Replacement Battery specifications
| Specification | Detail |
|---|
| Product type | Complete replacement battery with a pre-paired chip |
| Battery model | A2479 |
| Capacity | 2815 mAh |
| Rated voltage | 3.83 V |
| Charging cut-off voltage | 4.45 V |
| Energy | 10.78 Wh |
| Chemistry | Lithium-ion polymer |
| Compatible model | iPhone 12 (A2172, A2402, A2403, A2404) and iPhone 12 Pro (A2341, A2406, A2407, A2408) |
| Parts and Service History | “Genuine”, marked “Used”, after Restart & Finish Repair |
| Confirmed on | iOS 26 |
| Battery adhesive | Pre-applied on the battery |
| Warranty | 6 months against manufacturing defects |
| Dispatch | Same day on weekday orders before 2pm, NZ stock |
Capacity, voltage and energy figures are the supplier’s specifications for this battery. The battery model number is the one printed on the label of the iPhone 12 / 12 Pro battery.
Compatible iPhone 12 / 12 Pro model numbers
This battery fits the iPhone 12 (A2172, A2402, A2403, A2404) and the iPhone 12 Pro (A2341, A2406, A2407, A2408). The iPhone 12 and iPhone 12 Pro are different phones, but Apple gave them the same battery, so one battery covers both.
It does not fit other iPhone models: the iPhone 12 mini uses a 2227 mAh battery and the iPhone 12 Pro Max uses a 3687 mAh battery. Check the model number in Settings > General > About, or use Apple’s guide to identifying your iPhone.
How to fit the iPhone 12 / 12 Pro pairing ready battery
For technicians and experienced repairers. Work on an ESD-safe bench, and never lever against a lithium battery: a punctured cell can catch fire.
- Prepare the bench. Precision screwdrivers, a heat mat or heat gun, a suction handle, plastic picks and fine tweezers.
- Open the phone from the screen. Heat and lift the display, then unplug the battery connector before touching anything else.
- Remove the old battery. Pull the adhesive tabs out slowly at a low angle, then lift the battery out without bending or puncturing it.
- Fit the new battery. Peel the backing off its adhesive, press it into place, and reconnect it.
- Test and close. Check the phone boots and charges, then reseal it with fresh display adhesive.
- Finish the repair in iOS. With the phone on Wi-Fi, above 20% charge and on the latest iOS, open Settings > General > About > Parts & Service History and tap Restart & Finish Repair.
If you would rather hand the job over, GA Tech NZ offers in-house iPhone 12 / 12 Pro battery replacement, and our repair tools range covers the bench kit.
Who this battery suits
Repair shops and technicians. For customers who want Settings to show a “Genuine” battery rather than an Unknown part, without micro-soldering.
Experienced DIY repairers. If you have opened an iPhone before and own the tools, it fits as a straight swap, then finishes in Settings.
Phones with another Unknown part. If Parts and Service History already shows another part as “Unknown”, Restart & Finish Repair may not complete. Choose the Standard battery instead.
First-time repairers. If you have not opened an iPhone before, our in-house fitting service is the safer route.
What is in the box
- 1 x iPhone 12 / 12 Pro pairing ready replacement battery with the adhesive applied
Tools, and display adhesive for resealing the phone, are not supplied.
Warranty and returns
Supplied with a 6-month warranty against manufacturing defects in the battery. It does not cover physical damage, punctures, or damage caused while fitting.
Change-of-mind returns are accepted on unopened parts in new, unused condition within 7 days of delivery, in line with our terms and conditions.
Frequently asked questions
How is Pairing Ready different from Standard and Cell Only?
All three replace the battery. Pairing Ready has a pre-paired chip, so iOS lists it as “Genuine” (marked “Used”). Standard shows as “Unknown”. Cell Only keeps the phone’s original IC but needs soldering.
What will iOS show after fitting?
Once Restart & Finish Repair has run, Parts and Service History lists the battery as “Genuine”, marked “Used”, with no Unknown part message.
Why is it marked Used?
Apple uses “Used” for a part that was already used or installed in another iPhone. iOS reads the pre-paired chip that way, even though the battery is new.
Is this an Apple original battery?
No. It is an aftermarket battery. The “Genuine” label comes from the pre-paired chip, not from Apple making the cell.
Do I need to run Repair Assistant?
Yes. After fitting, open Settings, then General, About, Parts & Service History, and tap Restart & Finish Repair. The phone needs Wi-Fi, more than 20% charge and the latest iOS.
What if Restart & Finish Repair will not complete?
Restart the phone and try again. If another part in the phone already shows as “Unknown”, such as an aftermarket screen, it may not complete at all. For a phone like that, the Standard battery is the simpler choice.
What will Battery Health show?
A percentage: 100% on a new battery.
Does it work on the latest iOS?
We have confirmed it on iOS 26. Apple can change how iOS treats replacement parts in any update, so we cannot promise how future versions will behave.
Is the iPhone 12 battery the same as the iPhone 12 Pro battery?
Yes. Apple fitted the iPhone 12 and iPhone 12 Pro with the same 2815 mAh battery, so this one battery fits both phones.
Which iPhone 12 / 12 Pro models does it fit?
Model numbers A2172, A2402, A2403, A2404, A2341, A2406, A2407 or A2408. Check yours in Settings, then General, then About.
What warranty comes with it?
6 months against manufacturing defects. Physical damage, punctures and damage caused while fitting are not covered.
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