Skip to content
Söğütlüçeşme · Kadıköy / Istanbul Free two-way shipping across Turkey
Closed now · opens today at 09:30Closed · opens at 09:30 +90 537 958 02 02 TREN
Call now+90 537 958 02 02
Blog1 min read

iPhone battery replacement: when and how?

If Battery Health recommends “Service”, the iPhone turns off at a high percentage or the battery has swollen, it is time for a battery replacement. Data is usually preserved during the repair, but back up your data first; after it, charging, holding charge and the battery health screen are tested.

Cep Market Repair TeamIn Kadıköy since 2006
Key points
  • A “Service” recommendation in Battery Health shows it is time to replace.
  • Sudden shutdowns and slowing down are also signs of a worn battery.
  • With a swollen battery, stop using and charging the phone.
  • Back up your data before the repair.
  • Some models show an information message for an unverified battery; it does not affect how it works.

01When should it be replaced?

SymptomWhat it means
“Service” in Battery HealthCapacity has dropped clearly
Sudden shutdown at 20–30%The battery cannot meet the load
Slowing downPerformance management may be on
Screen lifting, swellingThe battery has swollen; replace it now

02How a battery replacement works

  1. Diagnosis. Battery health and the charging circuit are checked.
  2. Part options. Options and the price are explained before the repair.
  3. Replacement. The old battery comes out, the new one goes in and the screen is resealed.
  4. Testing. Charging, holding charge and the battery health screen are tested.
How an iPhone 7 battery is replaced

See also iPhone battery health “Service” and battery replacement cost.

Brand › Model › Repair listChoose your model, ask about the faultiPhone models

03How to get your phone to us

Visit our store

Hasanpaşa Mh. Söğütlüçeşme Cd. No: 192 (opposite the mosque car park), Kadıköy. Monday – Friday 09:00 – 20:30 · Saturday 09:30 – 20:30 · Sunday: Please ask.

Send it by post

Free two-way shipping with our contracted carrier from anywhere in Turkey. Send the device without its case, in a well-protected box, with a note giving your phone number and the fault.

Motorbike courier

Within Istanbul you can send your device by motorbike courier; just send us your address and the fault on WhatsApp.

FAQ

Frequently asked questions

01

When should an iPhone battery be replaced?

When Battery Health recommends “Service”, the phone turns off at a high percentage or the battery has swollen.

02

Will a battery replacement delete my data?

Data is usually preserved during a repair; still, you need to back up your data before the repair starts (backups are the customer’s responsibility).

03

Will I see an “unknown part” message after the replacement?

Some models may show an information message in Battery Health for a battery Apple cannot verify; it does not affect how the battery works.

04

Is a swollen battery dangerous?

Yes. A swollen battery puts pressure on the screen and housing; stop charging the phone and replace the battery soon.

Customer reviews

What our customers say

★★★★★

Today we had an original battery replacement on our iPhone 14 Pro done by Can, and we thank him very much for his kindness, his speed and his professional support. You can come with no question marks in your mind. I recommend it 👍

Özgür Can K.Customer review · Translated from Turkish
★★★★★

They replaced the battery of an iPhone 11 in 20 minutes and handed the device back.

Selçuk S.Customer review · Translated from Turkish
★★★★★

They replaced the screen of my iPhone 17 Pro Max with an original one within an hour. Emir and Kerem looked after me very well. An amazing business.

Ali E.Customer review · Translated from Turkish
★★★★★

Thank you, I had my device repaired: front glass replacement on a 17 Pro Max within an hour.

AhkCustomer review · Translated from Turkish
★★★★★

My brother Kerem welcomed us wonderfully; he truly knows the whole workshop by heart. Can, my doctor, left his mark on an iPhone that nobody else could fix. Thank you.

Saidovski M.Customer review · Translated from Turkish
★★★★★

I had the front glass of a 14 Pro Max replaced and I am pleased. Well done.

Alp Tunahan T.Customer review · Translated from Turkish
★★★★★

I had the screen and battery of my 14 Pro Max replaced and I am very pleased. Thanks for your work.

Oğuzhan O.Customer review · Translated from Turkish
★★★★★

I think you will be pleased with their approach, their helpfulness and their care.

Our customerCustomer review · Translated from Turkish

From our customers’ reviews. All reviews

Blog

More articles

All articles
Blog1 min read

Phone works but the screen is black: what to do

If your phone rings or vibrates but the screen is black, the phone is on; the problem is the screen or its connection. Force restart and charge it first. Shine a torch close to the screen in the dark: a faint picture means a backlight fault. If it started after a drop or liquid, the screen is usually replaced.

Read article
Blog1 min read

Lines on the phone screen: causes and fixes

Vertical, horizontal or coloured lines on the screen usually mean the display panel or its connection is damaged. A quick screenshot test tells you in seconds whether the problem is software or the panel.

Read article
Want to replace your iPhone battery?

Battery faults are diagnosed free of charge. Send us the model on WhatsApp.

+90 537 958 02 02