Standard, Cell Only or Pairing Ready: which to choose
All three replace a worn iPhone 15 Plus 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 | Standard (this part) | Cell Only | Pairing Ready |
|---|
| What you get | Complete battery with its own new IC, adhesive pre-applied | Bare cell, no IC board, adhesive included | Complete battery with a pre-paired chip |
| Your original battery IC | Replaced | Soldered onto the new cell | Replaced |
| Parts and Service History | “Unknown” | Reads as your original battery | “Genuine” (marked “Used”) |
| Battery Health | Shows a percentage from iOS 18 | Comes from the data stored on your original IC | Shows a percentage |
| Skill needed | A standard battery swap | Micro-soldering | A standard battery swap |
| Best for | A straightforward, lower-cost swap | Keeping the phone reading the battery it already had | No Unknown message and no soldering |
Choose Standard for a straightforward swap with no soldering, when an “Unknown” label in Settings does not matter. If the phone should keep reading its original battery, the Cell Only version keeps the original IC but needs micro-soldering. The Pairing Ready battery shows as “Genuine” (marked “Used”) without soldering.
About the iPhone 15 Plus replacement battery
This is a complete replacement battery for the iPhone 15 Plus: a new lithium-ion polymer cell with its own IC board and connector, with the adhesive already applied. It fits as a straight swap, with no soldering.
The iPhone 15 Plus was released in 2023. At 4383 mAh it sits between the iPhone 15 (3349 mAh) and the iPhone 15 Pro Max (4422 mAh) in the iPhone 15 line-up. The iPhone 15 Plus can be opened through its removable back glass as well as from the screen, so the battery can be reached without taking the display off.
The original iPhone 15 Plus battery carries model number A3039 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, not an Apple original part.
- 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.
- Parts and Service History lists this battery as “Unknown”. Battery Health shows a percentage, though Apple notes readings for a battery it cannot verify might not be accurate.
iPhone 15 Plus Replacement Battery specifications
| Specification | Detail |
|---|
| Product type | Complete replacement battery with IC board and connector |
| Battery model | A3039 |
| Capacity | 4383 mAh |
| Rated voltage | 3.867 V |
| Charging cut-off voltage | 4.48 V |
| Energy | 16.95 Wh |
| Chemistry | Lithium-ion polymer |
| Compatible model | iPhone 15 Plus (A2847, A3093, A3094, A3096) |
| 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 15 Plus battery.
Compatible iPhone 15 Plus model numbers
This battery fits iPhone 15 Plus models A2847, A3093, A3094 and A3096. They are the same phone sold in different regions, so one battery covers all of them.
It does not fit other iPhone models: the iPhone 15 uses a 3349 mAh battery and the iPhone 15 Pro Max uses a 4422 mAh battery. Check the model number in Settings > General > About, or use Apple’s guide to identifying your iPhone.
How to fit the iPhone 15 Plus replacement 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 back. Heat and lift the back glass, 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.
- Prepare the new battery. Peel the backing off the adhesive already applied to it.
- Fit the new battery. Line it up, press it into place, and reconnect it.
- Test and close. Check the phone boots and charges, then reseal it with fresh back glass adhesive.
After the swap, Parts and Service History (Settings > General > About) lists the battery as “Unknown”, because iOS cannot verify an aftermarket battery. Battery Health still shows a percentage, 100% on a new battery, though Apple notes that health readings for a battery it cannot verify might not be accurate. The phone charges and runs normally. Apple explains both in its guides to Parts and Service History and genuine iPhone batteries.
If you would rather hand the job over, GA Tech NZ offers in-house iPhone 15 Plus battery replacement, and our repair tools range covers the bench kit.
Who this battery suits
Repair shops and technicians. A complete battery that fits as a straight swap, for everyday battery jobs without soldering.
Experienced DIY repairers. If you have opened an iPhone before and own the tools, it fits without soldering or pairing.
If Settings must keep showing the original battery. Choose the Cell Only version instead, which keeps the phone’s own IC.
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 15 Plus replacement battery with the adhesive applied
Tools, and back glass 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 the Standard battery different from Cell Only and Pairing Ready?
Standard is a complete battery with its own new IC, fitted as a straight swap. Cell Only is a bare cell that keeps the phone’s original IC but needs soldering. Pairing Ready has a pre-paired chip, so iOS shows it as “Genuine” (marked “Used”).
Will iOS show the battery as Unknown?
Yes. Parts and Service History lists it as “Unknown”, because iOS cannot verify an aftermarket battery. The phone charges and runs normally.
What will Battery Health show?
From iOS 18, a percentage: 100% on a new battery. Apple notes that health readings for a battery it cannot verify might not be accurate.
Do I need to solder?
No. It is a complete battery, so it swaps in without soldering. Soldering is only needed for the Cell Only version.
Is the iPhone 15 Plus battery the same as the iPhone 15 battery?
No. The iPhone 15 Plus takes a 4383 mAh battery and the iPhone 15 a 3349 mAh battery, each shaped for its own phone, so the two are not interchangeable.
Is battery adhesive included?
Yes. The adhesive is already applied to the back of the battery: peel off the backing and fit it.
Which iPhone 15 Plus models does it fit?
Model numbers A2847, A3093, A3094 or A3096. Check yours in Settings, then General, then About.
Is this an Apple original battery?
No. It is an aftermarket battery, not an Apple part.
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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