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iPhone電池充到80%最健康?外媒3年實測給「超誠實建議」

ETtoday
2026/10/18 | 3分鐘閱讀

記者蘇晟彥/綜合報導

針對手機電池應該充到幾%的電量,江湖上一直謠傳各種版本,在2023年(iPhone 15機型後)蘋果將電池充電上限更改成80%後,一直就被外界認可為對電池最保護的方式。對此,外媒MacRumors連續實測三年,最終認為「確實電池健康度有保持,但犧牲20%電量並不划算」,同時也提供其他選項讓使用者選擇自己習慣的方式。

image

根據《MacRumors》實測,自從2023年蘋果更改電池方針後,他從iPhone 15 Pro Max、iPhone 16 Pro Max到上一代 iPhone 17 Pro Max,都進行系統建議的「充電至80%」方針,在測試 iPhone 16 Pro Max時盡量不讓電池低於20%,在經過三年的測試下,數據分別如下

機型(測試月份)/電池健康度/循環次數

.iPhone 15 Pro Max(36 個月)- 88%,369 次循環

.iPhone 16 Pro Max(24 個月)- 93%,343 次循環

.iPhone 17 Pro Max(12 個月)- 97%,277 次循環

在 iPhone15、16兩代在測試一年後,電池容量也都一樣為94%,而因為iPhone 17 Pro Max 在VC散熱版改良的原故,因此相較於前兩代,發燙的體感變得比較少。

對此,作者認為,雖然看起來電池的健康度都保持不錯,但在iPhone 15 Pro Max、16 Pro Max上,因為電池容量不大,要犧牲掉 20% 電量,來保持電池健康度,反而會造成使用上不便,變成需要隨身攜帶行動電源,但在iPhone 17 Pro Max上就沒有這樣的困擾。

最後,作者建議,其實最佳管理電池的方式、也最方便的方式是打開「最佳化電池充電」或是更改「充電上限」功能,官方也指出,「最佳化電池充電」是 Apple 與多數智慧型手機內建的智慧保護功能,旨在減少鋰離子電池處於滿電(100%)狀態的時間,進而減緩化學老化、延長電池整體壽命,或許調整成90、95%,能夠讓在外時間不必有充電焦慮,也是一個不錯的選項。

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本文轉載自ETtoday,原文標題:iPhone電池充到80%最健康?外媒3年實測給「超誠實建議」

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