Apple provides you entry to very particular details about your battery. You may see this your self by going to Settings > Battery, and there is extra info for those who click on on Battery Well being.
However your iPhone collects much more details about your battery.
Much more.
However Apple would not make it straightforward so that you can entry this info.
It is buried. It is buried deep.
To search out this info you need to go to Settings > Privateness, then scroll to the underside and faucet on Analytics & Enhancements.
Then you have to click on on Analytics Knowledge. This setting solely exists you probably have Share iPhone Analytics (or Share iPhone & Watch Analytics) enabled. If it isn’t enabled, you will have to allow it and wait a day or so for the iPhone to gather the info.
Sure, the knowledge is simply logged for those who select to share it with Apple. However oddly, Apple would not make it straightforward for you to try it.
If Analytics Knowledge is enabled, then faucet on it, and you will be offered by what appears to be like like a wall of information.
Analytics Knowledge
Do not panic!
You could scroll till you discover a file beginning with the identify log-aggregated. There’s more likely to be a bunch of them with dates within the identify.
The newest one will likely be on the backside of the checklist.
Faucet on it to open it and it will be full of knowledge.
A ton of it.
Contained in the log-aggregates file
And going via this information on the iPhone itself is a ache (though might be performed for those who’re affected person and do a replica and paste into an app like Notes).
What I do is I faucet the Share button and e mail the file to myself so I can open it at my leisure on a Mac or PC (you could possibly all the time AirDrop it to your self).
Emailing the file to myself
The file incorporates loads of info, so upon getting it open in a textual content editor you can begin in search of particular info.
First off, for those who search for BatteryCycleCount, that may let you know what number of recharge cycles your battery has been via. Based on Apple, your battery ought to retain 80 p.c of its capability after 500 recharge cycles, so gaining access to this determine.
That is most likely crucial determine that Apple would not let you know.
However there’s extra.
One other metric is MaximumFCC, which refers back to the most capability of your battery when new as measured in mAH (milliAmpHour). Apple prints a rated capability on its batteries, however it is a theoretical quantity, and the precise capability will fluctuate.
The determine that you simply get from the log file would be the most capability of your battery as measured by the iPhone.
The MaximumFCC will virtually all the time be just a few p.c better than the battery’s rated capability. This accounts for why the battery would not begin to lose Battery Well being on day one.
One other determine you will get out of the logs is NominalChargeCapacity, which provides you present capability of your iPhone’s battery. That is the present capability of your iPhone’s battery and is once more measured in mAH.
This provides a sign of how worn the battery is.
Are you able to do something to scale back battery put on?
Not likely.
Your battery will lose about one proportion level for each 25 cycles (be aware that you simply won’t begin noticing this instantly as a result of the precise capability or MaximumFCC of the battery is larger than the rated capability), then aside from utilizing your iPhone much less, there’s not a lot you are able to do.
You may, nonetheless, scale back on untimely battery put on by preserving the battery inside its rated temperature zone, and never overcharging it.
The iOS characteristic referred to as Optimized Battery Charging does a very good job of stopping untimely battery put on from overcharging.
However be aware that I mentioned, “untimely battery put on.”
It would not do something for normal battery put on. You may’t change the legal guidelines of physics.
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