تعویض باتری Sony Xperia Z4 با نصب تخصصی و خدمات مطمئن؛ برای اطلاع از تعویض باتری سونی اکسپریا زد۴ – Sony Xperia Z4 و دریافت مشاوره، با ما تماس بگیرید. پیک فوری در تهران برای دریافت و تحویل دستگاه و گارانتی معتبر خدمات تعمیرات، خیال شما را از بابت کیفیت و خدمات پس از تعمیر راحت میکند.
اگر به دنبال تعویض باتری سونی اکسپریا زد۴ هستید یا قصد خرید باتری سونی اکسپریا زد۴ را دارید، در این صفحه میتوانید اطلاعات مفیدی درباره این باتری و ویژگیهای آن پیدا کنید.
فهرست مطالب
Real workshop experiences in Tehran
cost for in 2026
Standard replacement: 900,000 Tomans
Time: 1 hour to 2 hours
Common Battery Issues
- Fast battery drain
- Sudden shutdown
- Battery swelling
- Overheating
- Incorrect percentage display
- Incomplete charging
- Severe performance drop
Misdiagnosis Cases
- Motherboard failure
- Power IC failure
- Software issue
- Faulty cable or charger
- High app consumption
- Calibration issues
Real Experiences
1. A customer brought a Sony Xperia Z4 that shut down randomly after a few minutes of use. The battery indicator showed 30 % and then the phone turned off. I removed the old battery, checked the connector and voltage – everything was within spec. After installing a new genuine 2930 mAh cell, the phone stayed on for over 6 hours of mixed usage. The problem was truly the aged battery.
2. Another case involved a Z4 that displayed a constantly jumping percentage: 10 % → 80 % → 20 % within seconds. The battery looked fine, but the power management IC was corroded. Replacing the IC solved the issue; the new battery behaved normally. Here the battery was not the culprit.
3. A third client claimed the phone had a swollen back and felt warm while charging. Upon opening the device, the battery was indeed bulging. I safely removed it, cleaned the interior, and installed a fresh high‑quality cell. After a 7‑day test, no swelling returned and the phone cooled down quickly. Successful repair.
4. A misdiagnosed situation: a user reported sudden shutdowns and blamed the battery. I replaced the battery, but the phone still died after 30 minutes. Further inspection revealed a cracked motherboard trace near the power switch. After soldering the trace, the shutdowns stopped. The original battery was actually fine.
5. One software‑only issue: a Z4 kept rebooting after a recent OS update. Battery voltage was stable, and the new cell I installed showed no change. A factory reset and cache wipe fixed the reboot loop. No hardware replacement was needed.
6. A case where the previous owner had installed a non‑original battery. The phone showed erratic charging and the battery percentage never reached 100 %. I replaced it with a genuine Sony‑specified cell; the charging curve normalized and the percentage became accurate.
7. Finally, a motherboard‑related failure: the phone would not power on at all, yet the battery indicator on the charger glowed. After testing, the battery delivered proper voltage, but the power IC was dead. Replacing the IC revived the device without touching the battery.
Real case table
| Model | Problem | Real cause | Outcome |
|---|---|---|---|
| Sony Xperia Z4 | Random shutdown | Aged battery | Replaced battery – stable operation |
| Sony Xperia Z4 | Jumping percentage | Power IC corrosion | IC replaced – accurate reading |
| Sony Xperia Z4 | Swollen back & overheating | Bulging battery | Battery swapped – no swelling |
| Sony Xperia Z4 | Sudden shutdown (after battery swap) | Cracked motherboard trace | Trace soldered – problem solved |
| Sony Xperia Z4 | Reboot loop after update | Software glitch | Factory reset – normal boot |
| Sony Xperia Z4 | Erratic charging, never 100 % | Non‑original battery | Genuine battery installed – charging normal |
| Sony Xperia Z4 | No power on | Power IC failure | IC replaced – device works |
Building Trust
From my years in the Tehran workshop, I’ve learned not to jump to conclusions. A swollen case usually means the battery is at fault, but sudden shutdowns can also stem from a damaged motherboard or a corrupted power IC. I always run a voltage test and check the connectors before ordering a new cell. Misdiagnosis happens often; that’s why I repeat the diagnosis after each step.
Even when the battery looks healthy, I still verify its capacity with a load test. If the phone still behaves oddly after a fresh battery, the issue is most likely elsewhere – the board, the software, or the charger. My goal is to give you a clear picture, not just replace parts blindly.
FAQ
What is the cost of battery replacement for Sony Xperia Z4?
The standard price is 900,000 Tomans, which includes a genuine 2930 mAh cell and a 6‑month warranty.
How long does the replacement take?
Typically between 1 and 2 hours, depending on the exact problem.
Why do batteries swell?
Swelling occurs when internal gases build up due to over‑charge, deep discharge, or a damaged separator inside the Li‑Ion cell.
Is it risky to keep using a swollen battery?
Yes. It can leak, damage the screen, or even cause a fire. Replace it immediately.
What’s the difference between original and fake batteries?
Original batteries match Sony’s specifications, have proper protection circuits, and last longer. Fake cells often have lower capacity and can overheat.
Conclusion
When your Sony Xperia Z4 shows sudden shutdowns, the first thought is usually the battery, but as the cases above show, the truth can be more complex. A thorough test saves you money and time, and prevents unnecessary part swaps. If you’re in Tehran and need a reliable battery replacement, bring the device to the workshop – we’ll diagnose, explain, and fix it with the right part, whether that’s a fresh cell or a board repair.
