Apple offers you entry to very particular details about your battery. You possibly can see this your self by going to Settings > Battery, and there is extra info if you happen to click on on Battery Well being.
However your iPhone collects much more details about your battery.
Much more.
However Apple would not make it simple so that you can entry this info.
It is buried. It is buried deep.
To seek out this info you need to go to Settings > Privateness, then scroll to the underside and faucet on Analytics & Enhancements.
Then that you must click on on Analytics Information. This setting solely exists in case you have Share iPhone Analytics (or Share iPhone & Watch Analytics) enabled. If it is not enabled, you may have to allow it and wait a day or so for the iPhone to gather the info.
Sure, the knowledge is barely logged if you happen to select to share it with Apple. However oddly, Apple would not make it simple for you to check out it.
If Analytics Information is enabled, then faucet on it, and you will be offered by what seems to be like a wall of information.
Analytics Information
Do not panic!
That you must 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 shall 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 by means of this knowledge on the iPhone itself is a ache (though may be finished if you happen to’re affected person and do a replica and paste into an app like Notes).
What I do is I faucet the Share button and electronic mail the file to myself so I can open it at my leisure on a Mac or PC (you might at all times AirDrop it to your self).
Emailing the file to myself
The file incorporates lots of info, so after getting it open in a textual content editor you can begin in search of particular info.
First off, if you happen to search for BatteryCycleCount, that may inform you what number of recharge cycles your battery has been by means of. In accordance with Apple, your battery ought to retain 80 p.c of its capability after 500 recharge cycles, so getting access to this determine.
That is most likely crucial determine that Apple would not inform you.
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 this can be a theoretical quantity, and the precise capability will range.
The determine that you just get from the log file would be the most capability of your battery as measured by the iPhone.
The MaximumFCC will virtually at all times be a couple of p.c higher 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 may get out of the logs is NominalChargeCapacity, which supplies 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 offers a sign of how worn the battery is.
Are you able to do something to cut back battery put on?
Probably not.
Your battery will lose about one proportion level for each 25 cycles (be aware that you just 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 other than utilizing your iPhone much less, there’s not a lot you are able to do.
You possibly can, nonetheless, cut back on untimely battery put on by protecting the battery inside its rated temperature zone, and never overcharging it.
The iOS function known as Optimized Battery Charging does a superb job of stopping untimely battery put on from overcharging.
However be aware that I stated, “untimely battery put on.”
It would not do something for normal battery put on. You possibly can’t change the legal guidelines of physics.
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