Checking availability…
iPhone Battery Replacement · Fixed by Post · UK-Wide
iPhone battery replacement from £49 —
health back to 100%, data untouched.
Dies by lunchtime? Random shutdowns? “Battery Health: Service”? Dan replaces worn iPhone batteries by post across the UK — health back to 100%, data untouched, waterproof seal restored. Every repair tested end-to-end and backed by a 12-month warranty.
✓ Genuine & quality cells·
✓ 12-month warranty·
✓ Free next-day return postage
🔧
4,000+Devices repaired
🛡️
12-monthWarranty
⚡
Next-dayReturn postage
✓
Apple-trained& certified
Signs you need this
Common signs your iPhone needs a battery replacement
Not sure if it's the battery? These are the symptoms Dan sees most often. Match whichever apply in the quote tool and he’ll confirm the exact fix before ordering anything — you never pay for a part you didn’t need.
📉
Drains very fast
Dies by lunchtime, or drops fast even when idle
💀
Shuts down randomly
Powers off suddenly even with charge left, especially in the cold
📊
“Service” / health warning
Settings shows “Service” or Battery Health significantly degraded
🐌
Phone running slowly
iOS throttles a worn battery, making the phone feel sluggish
🌡️
Gets very hot
Runs warm when charging or in use — can mean a failing cell
↗️
Screen lifting / swollen
Screen or back lifting from the frame — a swollen battery. Stop using it
🔋
Battery % jumps around
Percentage jumps or is wrong — e.g. 40% then suddenly dead
🔌
Won't charge / turn on
Dead and won't power on — could be a failed battery
⚠ A screen or back that's lifting away from the frame is a sign of a swollen battery — stop using and charging the phone and send it in as soon as possible. We handle swollen batteries safely, and if a device is too far gone to repair, we'll buy it.
iPhone battery replacement prices
How much does an iPhone battery replacement cost?
Fixed, transparent prices for every iPhone. You choose between a high-quality aftermarket cell and a brand-new genuine Apple battery — Dan will explain the difference. Every price includes the battery, fitting, testing, return postage and a 12-month warranty. Tap your model for an exact quote.
Model
Aftermarket
Genuine Apple
iPhone 16 Pro Max£69
£129
iPhone 16 Pro£69
£129
iPhone 16 Plus£69
£129
iPhone 16£69
£129
iPhone 16e£69
£129
iPhone 15 Pro Max£69
£129
iPhone 15 Pro£69
£129
iPhone 15 Plus£69
£129
iPhone 15£49
£129
iPhone 14 Pro Max£69
£129
iPhone 14 Pro£69
£129
iPhone 14 Plus£49
£129
iPhone 14£49
£129
iPhone 13 Pro Max£69
£129
iPhone 13 Pro£69
£129
iPhone 13£49
£129
iPhone 13 mini£49
£129
iPhone 12 Pro Max£69
£129
iPhone 12 Pro£49
£129
iPhone 12£49
£129
iPhone 12 mini£49
£129
iPhone 11 Pro Max£49
£129
iPhone 11 Pro£49
£129
iPhone 11£49
£129
iPhone XS Max£49
£129
iPhone XS£49
£129
iPhone XR£49
£129
iPhone X£49
£129
iPhone SE (3rd gen)£49
£129
iPhone SE (2nd gen)£49
£129
iPhone 8 Plus£49
£129
iPhone 8£49
£129Don’t see your model, or not sure it’s the battery? Run the quote tool — it covers every model and confirms the exact repair in under 2 minutes. Need a different fix? See iPhone screen repair or the iPhone 13 repair page.
What's the right move?
Fix it, sell it, or upgrade — your call
🔧
Repair it
Genuine parts available, 12-month warranty, and Dan checks before ordering parts so you never pay for one you didn't need.
from £49 Get a repair quote → 💰Sell it to us
We buy phones others reject — cracked, water-damaged, won't turn on. Any condition. Cash the same day it arrives, and usually more than CEX or Music Magpie on broken devices.
Get a sell offer → 📱Upgrade instead
Put your phone's value toward a refurbished upgrade — typically 25–35% more than cash, 12-month warranty.
See trade-in →Not just iPhone
We replace batteries in every device
iPad, MacBook, Samsung Galaxy and Google Pixel batteries too — all by post, genuine or quality aftermarket, all with a 12-month warranty. Prices vary by model, so run the quote tool or message Dan for an exact figure.
📱
iPad battery
from £79
💻
MacBook battery
from £129
📲
Samsung Galaxy battery
from £69
🔵
Google Pixel battery
from £49
MacBook batteries are quoted directly — message Dan with your model. For iPad, Samsung and Google, run the quote tool for your exact price.
Which battery is right for you?
Aftermarket vs genuine Apple
Best value
Quality aftermarket cell
A high-grade aftermarket cell matched to the original capacity — same everyday runtime, fitted and calibrated. The most cost-effective fix, in stock with no wait. On iPhone 11 and newer, iOS may show a “Service” or battery message in Settings — cosmetic only, it doesn’t affect performance.
Premium
Genuine Apple battery
A brand-new genuine Apple battery. Shows full health data in Settings with no warning message and reports cycle count correctly. Ordered in specifically for your device — allow 1–3 working days. The closest you can get to factory condition.
Knowing the difference matters
What a proper iPhone battery replacement actually involves
A battery isn't just a swap. Cheap jobs cut corners that show up later as warnings, lost water resistance or safety risks — these are the things Dan gets right, and why the repair lasts.
🔬
What the health % actually means
iOS reports Maximum Capacity against the battery's original design. Once it drops under about 80%, iOS throttles peak performance to stop sudden shutdowns — so a phone can feel slow and still show 82%. Cycle count matters as much as the percentage. A fresh cell resets both.
🔋
The “Service” message, handled properly
An “Unable to verify this iPhone has a genuine Apple battery” or “Service” message comes from a cell that isn't paired correctly. Dan fits cells that report health properly — or a genuine Apple battery that removes the message entirely. Your choice, clearly priced.
⚠️
Swelling is a safety issue
A swollen battery lifts the screen away from the frame and must never be punctured. If yours is swelling, stop using it. Dan handles these safely — and if a device is too far gone to repair, he'll buy it from you instead.
🛡️
Waterproof seal restored & calibrated
Opening the phone breaks the factory adhesive gasket. Dan reseals it so water resistance is restored, runs a full charge cycle to calibrate the new cell so health reads accurately — and never touches your data.
Why Cell Devices
A real specialist — not a faceless mail-in factory
👨🔧
One person, end to end
Dan personally carries out and tests every repair. Same person from quote to return — no queue.
🍏
Genuine parts available
Apple Self Repair trained, Samsung & Google certified. Genuine and quality aftermarket — your choice, clearly priced.
🛡️
12-month warranty
Every repair covered for a full year. If anything isn’t right, Dan sorts it.
📦
Fully by post, UK-wide
Free next-day return postage, wherever you are in the UK.
How it works
From quote to fixed in three steps
1
→
Get your quote
Use the quote tool or message Dan. Exact price, no surprises.
2
→
Post it in
Prepaid label sent once agreed. Dan keeps you updated and tests everything.
3
Back fast
Repaired, tested and returned with free next-day postage and a 12-month warranty.
iPhone battery replacement FAQ
Common questions
No — a battery replacement doesn’t affect anything on the phone. Your photos, apps and settings stay exactly as they are.
Yes — a fresh cell reports full Maximum Capacity and resets the cycle count. A genuine Apple battery shows full health data in Settings with no warning message.
Yes, handled safely. A swollen battery is a safety risk — stop charging it and send it in as soon as possible. If the device is too far gone to repair, Dan will buy it from you instead.
An aftermarket battery is usually fitted the same day Dan receives your phone and returned with free next-day postage — a couple of days door to door. A genuine Apple battery is ordered in first, adding 1–3 working days.
iPhone battery replacement by post — the UK specialist
Cell Devices is a Guildford-based specialist offering iPhone battery replacement to customers across the United Kingdom by post. If your iPhone dies quickly, shuts down randomly, runs hot, or shows “Battery Health: Service”, Dan replaces the cell personally using genuine Apple or high-quality aftermarket batteries, calibrates it, and returns it with a 12-month warranty.
Genuine or aftermarket — your choice
On every model you can choose between a cost-effective quality aftermarket cell and a brand-new genuine Apple battery. Genuine batteries show full health data in Settings with no warning message and report cycle count correctly. Dan explains the trade-off clearly and never fits a part without confirming with you first.
iPad, MacBook, Samsung & Google batteries too
Battery replacement isn't limited to iPhone. Cell Devices also replaces iPad battery (from £79), MacBook battery (from £129), Samsung Galaxy battery (from £69) and Google Pixel battery (from £49) — all by post, all with a 12-month warranty. iPad, Samsung and Google quotes are instant through the quote tool; MacBook batteries are quoted directly by message.
Why choose a specialist?
You deal with one experienced repairer from start to finish — not a counter queue or an anonymous mail-in factory. With over 4,000+ devices repaired, Apple Self Repair training, and Samsung and Google certification, Cell Devices combines big-chain credentials with genuine personal service. Get an instant quote, or explore all repair services.