iPhone 15 Pro Max Battery Replacement
Use this guide to replace the battery in your...
- Time Required:1 - 2 hours
- Difficulty:Moderate
Free shipping on orders over £65*
High-Quality iPhone Batteries
Replace your battery, not your phone—with iFixit's reliable parts and all-in-one repair kits.
iPhone 15 Pro Max Battery
Sale price £54.99
Option
iPhone 15 Pro Max Battery - Fix Kit
Sale price £54.99
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- Purchase with purpose! Repair makes a global impact, reduces e-waste, and saves you money.
- All our products meet rigorous quality standards and are backed by industry-leading guarantees.
- Shipping within 24 hours, except weekends and holidays.
- 14-day returns
Description
This iPhone 15 Pro Max replacement battery is what you need to bring your dead iPhone back to life!
- Tested to confirm there are no cycles on the cell and the capacity is 95% or higher.
- 100% factory tested with a customer return rate of only 1%.
- Assembled using high quality chipset from Texas Instruments.
- Spot tested by iFixit staff in San Luis Obispo, CA to ensure consistency of quality and capacity.
- Battery adhesive is preinstalled to improve the quality of your repair.
Battery degradation is an inevitable part of the lifespan of your iPhone 15 Pro Max. Extend the life of your phone with this new replacement battery. If your iPhone 15 Pro Max won't turn on, is stuck in a boot loop, has a "service battery" warning, or simply won't hold a charge, this replacement battery may be what you need to fix it.
Additional information on how to safely handle, dispose of, and calibrate your battery can be found in the FAQs below.
Specifications
| Battery Model # | A3121 |
|---|---|
| Watt Hours | 17.1 Wh |
| Voltage | 3.86 V |
| Milliamp Hours | 4422 mAh |
| Manufacturer | Aftermarket |
| iFixit Part Number | IF479-066-2 |
Quality Parts For Quality Repairs
iFixit's iPhone replacement parts are meticulously tested and backed by our Quality Guarantee. We've spent over a decade scrutinizing component manufacturers and aftermarket suppliers so that you can trust the parts you receive.
Good Battery = Good Experience
Even if you don’t mind plugging in every day (or more), a worn-out battery can cause problems like overheating, performance slowdowns, and unexpected shutdowns. Swapping in a fresh battery restores reliable power so you can focus on what matters.
Right For The Environment & Your Wallet
It’s not just more sustainable—it’s cheaper, too. Replacing your iPhone battery with an iFixit Fix Kit can save you anywhere from $34 to $49 compared to Apple’s out-of-warranty service—depending on your model.
Frequently Asked Questions
Replacement Guides
Service value proposition
Purchase with purpose
Repair makes a global impact, reduces e-waste, and saves you money.
Repair with confidence
All our products meet rigorous quality standards and are backed by industry-leading guarantees.
Fast shipping
Shipping within 24 hours, except weekends and holidays.
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You Got This
Ready to repair? Pick your Part or Fix Kit and click ‘Add to Cart’—your device (and the planet) will thank you.
