The battery of the 'iPhone' was replaced for the first time at the Apple Store—what important lessons were learned?

The battery of the 'iPhone' was replaced for the first time at the Apple Store—what important lessons were learned?
2026年07月03日 07時00分Level: N1Sentences: 32
長年ながねんiPhoneユーザーある筆者ひっしゃとっかつて新品しんぴんかがやiPhone24時間じかん365かべコンセントワイヤレス充電器じゅうでんきつないおかなけれならないやくかたまりようなっしまう時間じかん問題もんだい

For me, a long-time 'iPhone' user, it was only a matter of time before my once shiny new iPhone became a useless lump that had to be plugged into a wall outlet or wireless charger 24 hours a day, 365 days a year.

筆者ひっしゃiPhone14Proそうなるまでやく3ねんかかっ

It took about three years for my 'iPhone 14 Pro' to reach that point.

2023ねん1がつ14Proとても満足まんぞく

I got the 14 Pro in January 2023 and was very satisfied.

動作どうさはや軽快けいかい数日間すうじつかん充電じゅうでんようかんられ

It felt fast and responsive, and the battery seemed to last for several days.

なんねん使つかつづあと数時間すうじかんしか充電じゅうでんなくなりバッテリー残量ざんりょう60%下回したまわ消耗しょうもういちじるしくはやなること気付きづ

After using it for several years, I noticed that it only held a charge for a few hours, and once the battery level dropped below 60%, the depletion became significantly faster.

かつて軽快けいかいだっスマートフォンどこ予備よびバッテリーいかなけれならなくなりそれおおきな負担ふたんなっ

The once nimble smartphone now required me to carry a spare battery wherever I went, which became a major burden.

バッテリー状態じょうたいどれほど深刻しんこくだっ認識にんしきiPhoneバッテリーかんするヒントまとめ記事きじ執筆しっぴつときあっ

However, I only realized how serious the battery condition was when I wrote an article compiling tips about iPhone batteries.

iPhoneバッテリー状態じょうたい診断しんだんする機能きのう確認かくにんところバッテリーやく72%までしか充電じゅうでんできないことかっ

When I checked using the feature to diagnose the iPhone's battery status, I found that the battery could only be charged to about 72%.

つまりフル充電じゅうでんおもとき実際じっさい本来ほんらい最大さいだい容量ようりょうまで充電じゅうでんできなかっ

In other words, even when I thought it was fully charged, it was actually not able to charge to its original maximum capacity.

いちじるしく劣化れっかバッテリーせいiPhoneある負担ふたんかんられるようなっ

Due to a significantly degraded battery, carrying the iPhone had become a burden.

そのためとくバッテリー性能せいのう向上こうじょうせるため9がつ登場とうじょうするられるiPhone18シリーズえる計画けいかく

Therefore, I had planned to upgrade to the upcoming "iPhone 18" series, expected to be released in September, especially to improve battery performance.

そうする必要ひつようなさそう

However, it seems that won't be necessary.

iPhone14Pro診察しんさつところApple新品しんぴん同様どうようくれからある

This is because when I had my iPhone 14 Pro examined, Apple restored it to like-new condition.

診断しんだん

Diagnosis

iPhoneバッテリー寿命じゅみょうことおしくれる

The iPhone's battery tells you when it has "reached the end of its life."

設定せってい>バッテリー>バッテリー状態じょうたい充電じゅうでん移動いどうするバッテリー状態じょうたいAppleよる推奨すいしょう内容ないよう確認かくにんできる

By navigating to "Settings" > "Battery" > "Battery Health & Charging," you can check the battery's condition and Apple's recommendations.

筆者ひっしゃ場合ばあい2026ねん4がつ14Proバッテリー確認かくにんとき画面がめんつぎよう状態じょうたいだっ

In my case, when I checked the 14 Pro's battery in April 2026, the screen displayed the following condition.

iPhoneバッテリーいちじるしく劣化れっかいる表示ひょうじバッテリー交換こうかん手順てじゅんしめ

The iPhone indicated that the battery was significantly degraded and showed the steps for battery replacement.

最初さいしょなが数週間すうしゅうかん経過けいかするこのひどいバッテリーもはや実用的じつようてきなく9がつ予定よていいるイタリア旅行りょこうまで修理しゅうりおかなけれかなり面倒めんどうことなりそう気付きづ

At first, I brushed it off, but after a few weeks, I realized that this terrible battery was no longer practical, and if I didn't get it repaired before my planned trip to Italy in September, it would likely become quite troublesome.

1ねん以内いないiPhoneえるまよことあり筆者ひっしゃ費用ひようはらバッテリー100%状態じょうたい復活ふっかつせること

Having been unsure whether to replace my iPhone within a year, I decided to pay to restore the battery to 100% condition.

6がつはいようやくバッテリー交換こうかんすること修理しゅうりサービスオプションつけるクリックすうじつ以内いないちかApple Store予約よやくことでき

Finally, in June, I decided to replace the battery, clicked on 'Find Repair Service Options,' and was able to make a reservation at a nearby Apple Store within a few days.

AppleiPhoneモデル加入かにゅういる保証ほしょうおうバッテリー交換こうかん費用ひよう見積みつもり提示ていじする

Apple provides an estimate for battery replacement costs based on the model of the iPhone and the warranty you have.

筆者ひっしゃ14Pro見積みつもり金額きんがく99ドルだっ

For my 14 Pro, the estimated cost was $99.

点検てんけん

Inspection

予約よやく当日とうじつApple Store訪問ほうもんませる準備じゅんびととのまですうふんよう案内あんない

On the day of the appointment, I visited the Apple Store, completed the check-in, and was instructed to wait a few minutes until my turn.

そのBluetooth位置情報いちじょうほうオフApple IDログインするようもとられ

After that, I was asked to turn off Bluetooth and location services and log in with my Apple ID.

Appleスタッフ独自どくじ診断しんだんテストいくつ実行じっこう筆者ひっしゃバッテリー実際じっさい使つかものならない状態じょうたいあること確認かくにん(実際じっさいそうだっ)

Apple staff ran several of their own diagnostic tests and confirmed that my battery was indeed in a non-functional state (which it was).

同時どうじほかパーツ状態じょうたいチェック

At the same time, they checked the condition of other parts.

すうふん筆者ひっしゃiPhoneバッテリーのぞ非常ひじょう良好りょうこう状態じょうたいありそのうちバッテリー交換こうかんできるらさ

A few minutes later, I was informed that my iPhone was in very good condition except for the battery, and that it could be replaced that same day.

すぐiPhoneApple Storeあずそのあと2時間じかんもの用事ようじ

I immediately dropped off my iPhone at the Apple Store and spent the next two hours shopping and running errands.

バッテリー交換こうかんする場合ばあいApple IDパスワード把握はあくおくこと非常ひじょう重要じゅうよう

When replacing the battery, it is very important to have your Apple ID and password ready.

iPhoneパスコードいる必要ひつようある

You also need to know your iPhone's passcode.

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