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Your iPhone battery is mendacity to you in bizarre methods



Individuals appear obsessive about the well being of their iPhone’s battery.

Actually obsessed.

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You’ll be able to see this data your self by going to Settings > Battery, and there is extra data should you click on on Battery Well being.

However I am right here to let you know that this quantity is junk. It is a feel-good quantity that does not actually let you know something significant in regards to the precise well being of your battery.

My iPhone tells me that my battery remains to be at 98% capability after months of use.

Battery Health in iOS

Battery Well being in iOS

Adrian Kingsley-Hughes

That is nonsense.

However your iPhone is aware of the reality. The iOS working system collects numerous details about your battery and the general well being of your system.

However, as common, Apple does not make it simple so that you can entry this data and has chosen to bury this data deep within the bowels of iOS.

To seek out this data, you need to go to Settings > Privateness, then scroll to the underside and faucet on Analytics & Enhancements.

Then it’s worthwhile to click on on Analytics Information. This setting solely exists you probably have Share iPhone Analytics (or Share iPhone & Watch Analytics) enabled. If it isn’t enabled, you will must allow it and wait a day or so for the iPhone to gather the info.

Sure, the data is simply logged should you select to share it with Apple. However oddly, Apple does not make it simple so that you can take a look at it.

If Analytics Information is enabled, then faucet on it, and you will be introduced with what seems like a wall of information.

Wall of analytics and diagnostic files!

Wall of analytics and diagnostic information!

Adrian Kingsley-Hughes

Do not panic!

It is advisable to scroll till you discover a file beginning with the title log-aggregated. There’s prone to be a bunch of them with dates within the title.

The most recent one shall be on the backside of the record. Oh, however you probably have an Apple Watch paired with the iPhone, then there shall be an analogous file for that too. To inform the distinction, faucet on it to open up the file, scroll to the highest and search for it to say iPhone OS and never Watch OS.

And going by this information on the iPhone itself is a ache (though it may be carried out should you’re affected person and do a duplicate 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 possibly can at all times AirDrop it to your self).

The file comprises numerous data, so after you have it open in a textual content editor, you can begin in search of particular data.

Right here I am in search of 4 particular entries:





These shall be scattered in regards to the file, for I counsel doing a seek for BatteryCycleCount, design_capacity, nominal_charge_capacity, and raw_max_capacity.

Beneath these entries shall be a quantity inside integer tags.





So, what do these numbers imply?

  • BatteryCycleCount is the variety of recharge cycles the battery has gone by.
  • design_capacity is the rated capability that Apple claims the battery to be, measured in mAh (milliamp hours).
  • nominal_charge_capacity is the battery capability because it presently stands, measured in mAh (milliamp hours).
  • MaximumFCC was the utmost capability of the present battery (virtually at all times, that is the primary cost capability), measured in mAh (milliamp hours).

Discover the discrepancy between the battery’s rated capability (design_capacity) and its precise capability when new (MaximumFCC).

That is a distinction of virtually 200mAh.

Apple prints a rated capability on its batteries, however this can be a theoretical quantity, and the precise capability will differ due to manufacturing variations.

However all of the batteries that Apple matches into iPhones may have a capability no smaller than the rated capability, and in fact, each one I’ve come throughout has a bigger capability.

That is why that Battery Well being quantity stays at 100% for therefore lengthy and does not begin to lose tick down from day one.

And it is why that Battery Well being quantity is meaningless.

There is not any method that after 264 recharge cycles, my battery has solely misplaced 2% of its capability. 

In accordance with Apple, the battery is rated to carry 80% of its capability after 500 full cost cycles.

Which means that my iPhone is greater than 50% by that 500 cost cycles.

However is there something you do something to scale back battery put on?

The underside line is that your battery will put on, however you possibly can take steps to scale back on untimely put on.

As a part of regular sporting, your battery will lose about one share level for each 25 cycles (word that you simply won’t begin noticing this instantly as a result of the precise capability or MaximumFCC of the battery is bigger than the rated capability). That is simply physics, and other than utilizing your iPhone much less, there’s not a lot you are able to do about it.

So my battery has misplaced about 10% of its capability. 

You’ll be able to’t change the legal guidelines of physics.

Nevertheless, you possibly can scale back untimely battery put on by conserving the battery inside its rated temperature zone and never overcharging it.

The iOS characteristic referred to as Optimized Battery Charging does a great job of stopping untimely battery put on from overcharging.

However word that each one you’re doing is lowering on untimely battery put on.

It does not do something for normal battery put on. Your battery will put on out, so take pleasure in it whereas it really works, and both plan on getting it changed or changing your iPhone.

And cease obsessing over that Battery Well being quantity!

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