4-inch iPhone released in March 2016 with similar hardware specifications to the 6s. Available in Silver, Space Grey, Gold, or Rose Gold with 16/64 GB storage options. Model A1662 and A1723.

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At what point should I consider replacing my battery?

I am curious when I should replace my battery. It can hold 92% currently, but in light of recent Apple CPU throttling concerns, I would like to know at what point it needs to be replaced. Thanks!

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Need? whenever your phone is unable to support your schedule.

however, batteries are only designed for roughly 500 charges. so anytime after a year and a half would be the optimal preventative timing to replace a battery.

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Even new it isn't able to support my schedule. Just a tiny battery. I think I might replace it as it has been more than 500 charge cycles. Thanks for your feedback!

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I have completely rewritten this comment, so Reed Crosby's comment may not be exactly coherent with my comment.

I found what I think is an/the early note on reddit about this at https://www.reddit.com/r/iphone/comments.... So, although we don't know what exactly triggers the throttling (battery cycles or capacity or age or ?), we do know a way with either CPU Dasher X or comparative Geekbench scores to see if you are being throttled.

I did a cursory security check on CPU Dasher X (no big red flags when searching the web, it looks like there is open source code on github for some version of it), downloaded it, and found that I am not throttled (CPU speed very close to max). The coconutBattery application (runs on your computer but will check you phone's battery when connected) says my phone's battery is still above 95% / 1545 mAh at only 257 cycles, even though the phone is 15 months (about 450 days) old. I would guess it is capacity or cycles based, as it seems like I might get throttled on age alone. I'll comment back here if I notice a change and remember to come back.

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@public1 I saw the original reddit discussion, but I can't find it a second time and have been unable to figure out what triggers the throttling. 11.3 allows you to switch it off now so not that big of a deal.

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You can always add a Mophie Battery charging case to extend your battery life. However if you must change your battery I would do it when it will only Charge to 75 %.

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Reed Crosby will be eternally grateful.
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