Battery drain even after replacement.

Question

iPhone 5

2012年9月12日に発表されたApple社による6番目となる iPhone。このデバイスの修理方法は前モデルと類似しており、スクリュードライバーと開封工具が必要です。GSMかCDMA方式、16/32/64 GB。本体色は黒と白。

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alexjakob @alexjakob

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投稿日: 2015年5月25日

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Battery drain even after replacement.

So I`ve changed my old battery to iFixit battery, but battery still drains like 1% per min when using. So I`ve heard about U2 chip, but my phone charges normal and when i`m drained battery empty i can charge it. I`ve minimalized usage as possible, but nothing changes.

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guys? its u2 or what?

alexjakob さんによる2015年5月25日

before replace the battery is there any fault? did your previous battery had same fault?

Buddhika Mahesh さんによる2015年5月25日

previous battery had 527 cycles and power iBackupbot showed 700MAh from 1420MAh so i that needed replacement. Phone have not been any water damage or so. Always charged with apple charger who came in package.

alexjakob さんによる2015年5月25日

I tried reseting settings, reseting all software, even downloaded iOS 8.4, no changes.

alexjakob さんによる2015年5月25日

so what is it then?:(

alexjakob さんによる2015年5月25日

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3件の回答

before replace the battery is there any fault? did your previous battery had same fault? — Buddhika Mahesh
previous battery had 527 cycles and power iBackupbot showed 700MAh from 1420MAh so i that needed replacement. Phone have not been any water damage or so. Always charged with apple charger who came in package. — alexjakob
I tried reseting settings, reseting all software, even downloaded iOS 8.4, no changes. — alexjakob

Buddhika Mahesh @buddhikamahesh 評価: 15.1千 13 39 16 · Answer 1 · 2015-05-25T23:19:55-07:00

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Buddhika Mahesh @buddhikamahesh

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投稿日: 2015年5月25日

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1) Before touching U2 check below steps

Turn off all connectives such as Wi-Fi, BT, Mobile data and check whether any improvement of battery life
Again restore via iTunes and setup as new device ( check the device before restore the all contents of your iCloud and apps)
if above steps not worked for you,

1) Remove insisting battery

2) cut off Old battery contact wire with doc connector

3) Connect Voltage(V) and power(A) analyzable power supply (make sure + and - correct)

4) Tune voltage to 4.0V

5) Turn on the phone pressing power key and measure taking current (mA) and it should be around 5mA to 1140mA if power taking beyond 1500mA your logic board having some kind of short circuit.

let me know the result. there is few steps to check in logic board

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6 件のコメント:

Tried first steps, no results, same thing.

Where do I get analyzable power supply? Can I buy it? I don`t think I have one.

Thank you.

alexjakob さんによる2015年5月26日

And one more thing, phone standby can sit like 3 days if I`m not using it, when I start using rapid battery drain, also I can listen to music, battery works fine with no drains, as soon i unlock it and start even texting drains start, phone is cool and not hot.

alexjakob さんによる2015年5月26日

Maybe I should dissamble it and put back together? That would change anything?

alexjakob さんによる2015年5月26日

its a variable power supply

_Z_ さんによる2015年5月26日

Hello alexjakob,

you no need to worried about your motherboard or other components. as you said battery drain without hot.(According to basic physics theories :-) ) fault coming from your battery. if you have battery analyzer you can check the capacity of battery otherwise replace it

Buddhika Mahesh さんによる2015年5月26日

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