iPhone Battery Replacement Cost UK (2026): Every Model vs Apple's Price
A worn iPhone battery is the single most common reason a perfectly good phone starts to feel old — sudden shutdowns, a charge that vanishes by mid-afternoon, throttled performance. The good news: it's also the cheapest major repair you can do, and it can add two or three years to a phone you already own. This guide gives the real UK cost for every iPhone model, how celltech compares to Apple, and exactly when a battery replacement is worth it.
Direct answer: Most iPhone battery replacements at celltech cost between £39.95 and £94.95 — an iPhone 11, 12, or 13 battery is £44.95, an iPhone 14 is £69.95, and an iPhone 15 is £74.95. The newest Pro and Max flagships cost more (up to £214.95 for the iPhone 17 Pro Max). It's worth replacing the battery once iOS shows a "Service" message or maximum capacity drops below around 80%, or if you get sudden shutdowns — far cheaper than upgrading the whole phone.
Why celltech: every battery replacement carries a 27-month warranty — more than double the 12 months most independents offer, and far longer than Apple's 90 days. It's a tracked, insured, UK-wide mail-in service with transparent pricing and free diagnostics on standard repairs, and your data is never touched.
iPhone Battery Replacement Cost by Model
Below are celltech's current battery prices for every iPhone in active use. Where a model offers a high-capacity cell, both options are shown — standard fits a quality cell matched to Apple's original specification; high-capacity uses a top-grade cell, often with more milliamp-hours than the factory battery, for maximum runtime and longevity. Both carry the same 27-month warranty.
| iPhone model | Standard battery | High-capacity battery |
|---|---|---|
| iPhone 17 Pro Max | £214.95 | — |
| iPhone 17 Air | £179.95 | — |
| iPhone 17 Pro | £174.95 | — |
| iPhone 17 | £164.95 | — |
| iPhone 16 Pro Max | £104.95 | £174.95 |
| iPhone 16 Pro | £104.95 | £174.95 |
| iPhone 16 Plus | £139.95 | £159.95 |
| iPhone 16 | £54.95 | £84.95 |
| iPhone 15 Pro Max | £104.95 | £144.95 |
| iPhone 15 Pro | £104.95 | £144.95 |
| iPhone 15 Plus | £94.95 | £124.95 |
| iPhone 15 | £74.95 | £94.95 |
| iPhone 14 Pro Max | £84.95 | £144.95 |
| iPhone 14 Pro | £84.95 | £144.95 |
| iPhone 14 Plus | £84.95 | £109.95 |
| iPhone 14 | £69.95 | £89.95 |
| iPhone 13 Pro Max | £74.95 | £99.95 |
| iPhone 13 Pro | £74.95 | £99.95 |
| iPhone 13 | £44.95 | £69.95 |
| iPhone 13 mini | £44.95 | £69.95 |
| iPhone 12 Pro Max | £54.95 | £74.95 |
| iPhone 12 Pro | £49.95 | £69.95 |
| iPhone 12 | £44.95 | £64.95 |
| iPhone 12 mini | £44.95 | £64.95 |
| iPhone 11 Pro Max | £59.95 | £79.95 |
| iPhone 11 Pro | £44.95 | £64.95 |
| iPhone 11 | £44.95 | £54.95 |
| iPhone XS Max | £54.95 | — |
| iPhone XS | £54.95 | — |
| iPhone XR | £54.95 | — |
| iPhone X | £54.95 | — |
| iPhone SE (2022) | £44.95 | £64.95 |
| iPhone SE (2020) | £39.95 | £54.95 |
| iPhone SE (2016) | £34.95 | — |
| iPhone 8 Plus | £44.95 | — |
| iPhone 8 | £39.95 | — |
| iPhone 7 Plus | £44.95 | — |
| iPhone 7 | £39.95 | — |
If your exact model isn't listed, contact us for a quote — these are the published prices for the iPhone families we replace most. Prices include the cell, fitting, calibration, and the 27-month warranty. There are no hidden fees, and diagnostics are free on standard battery work.
Standard vs High-Capacity Battery: Which Should You Choose?
For most people, the standard battery is the right choice: a quality cell matched to the milliamp-hour rating Apple originally fitted, so you get back to day-one runtime. The high-capacity option, available on most iPhone 11 series and newer, uses a premium cell that can hold more charge than the factory original — useful if you're a heavy user, run navigation or video for hours, or simply want the longest possible time between charges.
Either way, the swap restores full charging behaviour: iOS stops throttling performance, the "Service" warning disappears, and battery health resets to 100%. The difference between the two tiers is runtime ceiling and longevity, not reliability — both are covered for 27 months.
celltech vs Apple: Price and Warranty Compared
Apple's published out-of-warranty iPhone battery service runs roughly £65 to £105 depending on the model (Apple's published pricing, subject to change). That's a flat fee per model, and it comes with Apple's standard 90-day repair warranty.
For the iPhones most people are still carrying — the 11, 12, 13, and 14 families — celltech typically undercuts Apple comfortably. An iPhone 11, 12, or 13 battery is £44.95 here, versus Apple's roughly £65–£105, and you get a far longer warranty into the bargain. On the very newest Pro and Max flagships, where genuine-grade cells are scarce and expensive, celltech's price can sit above Apple's flat fee — but you're getting a high-capacity cell and 27 months of cover rather than 90 days.
That warranty gap is the real story. Apple's 90-day cover means a battery that misbehaves on day 91 is your problem. celltech's 27-month warranty — over two years — covers the cell for the realistic lifetime of a battery replacement. Most independent rivals offer 12 months; Apple offers three. We also keep the whole job mail-in and tracked, so you never need to find a Genius Bar appointment or hand the phone over in person.
When Is Your iPhone Battery Too Low? (Battery Health Explained)
Lithium-ion batteries wear out with every charge cycle. iOS tracks this as Maximum Capacity — the percentage of the original charge your battery can still hold. To check it, go to Settings > Battery > Battery Health (called "Battery Health & Charging" on some versions). You'll see a percentage and, if the battery is significantly degraded, a "Service" recommendation.
Apple considers a battery "consumed" once it drops to around 80% of original capacity. At that point you'll notice shorter runtime, and iOS may begin performance management — quietly slowing the phone to prevent unexpected shutdowns. So 80% is the line where a replacement starts to make sense.
A very common question is whether 70% battery health is too low — for example on an older iPhone 11. The short answer: yes, that's a clear replacement candidate. At 70% you've lost nearly a third of your original capacity, throttling is likely active, and you'll be reaching for a charger well before the end of the day. For a deeper look at the exact thresholds, see our guide to what battery health percentage is too low.
Signs you need a battery replacement
- Maximum Capacity below 80%, or a "Service" message in Battery Health
- Sudden shutdowns — the phone dies at 30%, 40%, or more, especially in the cold
- Fast drain — the charge falls noticeably quicker than it used to
- Sluggish performance — apps stutter because iOS is throttling to protect a weak battery
- Swelling — the screen or back glass lifts away from the frame. Stop using the phone and get it seen quickly; a swollen cell is a safety risk
Is It Worth Replacing the Battery, or Should You Upgrade?
Run the maths. A new iPhone costs hundreds of pounds; a battery replacement on an iPhone 11 through 14 costs £44.95–£89.95. If the phone is otherwise in good shape — screen fine, no water damage, still getting iOS updates — a fresh battery is the single highest-value upgrade you can make, and it buys you two to three more years.
Replacement makes obvious sense when the only real complaint is battery life, when the model still receives software updates, and when you'd otherwise be spending many times the repair cost on a new device. Leaning towards an upgrade is more reasonable if the phone has multiple failing parts, if it's several generations past software support, or if you genuinely want new features rather than just a phone that lasts the day.
For most people in the middle, the battery wins on cost alone. We weigh this up honestly in our dedicated guide on whether it's worth replacing an iPhone battery. And if you're also weighing a cracked display, our iPhone screen replacement cost guide shows where the numbers land there too — bundling a screen and battery is often the smartest spend on an older phone.
Frequently Asked Questions
How much is an iPhone battery replacement?
At celltech, most iPhone battery replacements cost between £39.95 and £94.95. An iPhone 11, 12, or 13 is £44.95; an iPhone 14 is £69.95; an iPhone 15 is £74.95. Newer Pro and Max flagships cost more, up to £214.95 for the iPhone 17 Pro Max. See the full table above for your exact model.
Is it cheaper than Apple?
For the iPhone 11 through 14 families, yes — usually by a clear margin. Apple's published out-of-warranty battery service is roughly £65–£105 (subject to change), while those models are £44.95–£89.95 here. On the newest Pro and Max models prices can be similar, but celltech still gives you a 27-month warranty against Apple's 90 days, plus a high-capacity cell option.
What battery health percentage is too low?
Apple treats a battery as consumed at around 80% Maximum Capacity, which is where iOS may show a "Service" message and start managing performance. Below that — and certainly at 70% or lower — you'll see meaningfully shorter runtime and possible slowdowns, so it's worth replacing. Check yours under Settings > Battery > Battery Health.
Will I lose my data?
No. A battery replacement doesn't touch your storage — your photos, messages, apps, and settings stay exactly as they were. We still recommend a quick iCloud or computer backup before any repair, as sensible practice with any device.
How long does it take?
The battery swap itself is a same-session job once your iPhone reaches our workshop. As a tracked, insured, UK-wide mail-in service, you book online, post the phone, and we keep you updated at each stage before returning it. There's no need to visit a shop or wait for an appointment.
Is it worth replacing the battery on an old iPhone?
Usually, yes — if the phone is otherwise sound and still receives iOS updates, a £44.95–£74.95 battery is far cheaper than a new device and adds years of life. It's less compelling if the phone has other failing parts or has dropped out of software support. Our worth-it guide walks through the decision in detail.
Do you use genuine-quality batteries?
We fit cells matched to Apple's original specification on the standard tier, and premium high-capacity cells — often with more capacity than the factory battery — on the high-capacity tier. After fitting we calibrate the battery so iOS reports health correctly and stops any performance throttling. Both tiers are backed by our 27-month warranty.
Can I book a battery replacement online?
Yes. Book through our iPhone repair page, choose your model and the standard or high-capacity battery, and post your device using our tracked, insured mail-in service. Diagnostics are free on standard battery repairs, and you only proceed once you've seen the price.