Here’s what Apple doesn’t want you to know about your iPhone’s battery

Apple gives you access to very specific information about your battery. you can see it yourself Settings > Batteryand there’s more information if you click battery health,

But your iPhone collects a lot of information about your battery.

Too much.

But Apple doesn’t make it easy for you to access this information.

It has been buried. It is buried very deeply.

To get this information you have to go here Settings > Privacythen scroll down and tap Analytics & Improvement,

then you have to click analytics data, This setting only exists if you have Share iPhone Analytics (Or Share iPhone and view analytics) Able. If it is not enabled, you will have to enable it and wait for a day or two for the iPhone to collect the data.

Yes, information is only logged if you choose to share it with Apple. But strangely, Apple doesn’t make it easy for you to see.

If analytics data is enabled, then tap on it, and you will be presented with what looks like a wall of files.

Don’t panic!

You have to scroll down till you find the file starting with the name log-gathered, There are likely to be a bunch of them with dates in the name.

The latest will be at the bottom of the list.

Tap on it to open it and it will be filled with information.

A ton of it.

And going through all this data on the iPhone is a pain in itself (though it can be done if you’re patient and can copy and paste into an app) notes,

What I do is I tap the Share button and email the file to myself so I can open it on a Mac or PC at my leisure (you can always AirDrop it to yourself).

The file contains a lot of information, so once you’ve got it open in a text editor you can start looking for specific information.

First of all, if you look for battery cycle count, which will tell you how many recharge cycles your battery has gone through. According to Apple, your battery should retain 80 percent of its capacity after 500 recharge cycles, so this figure should be reached.

This is possibly the most important figure Apple doesn’t tell you.

But there is much more.

is another metric maxFCC, which refers to the maximum capacity of your battery when new as measured in mAH (milliamp-hours). Apple prints a rated capacity on its batteries, but this is a theoretical number, and actual capacity will vary.

The figure you will get from the log file will be the maximum capacity of your battery as measured by the iPhone.

maxFCC It will almost always be a few percent more than the rated capacity of the battery. This explains why battery health doesn’t start to deteriorate from day one.

Another statistic you can get from the log is nominal charge capacity, which gives you the current capacity of your iPhone’s battery. This is the current capacity of your iPhone’s battery and is again measured in mAH.

This shows how bad the battery is.

Can You Do Anything to Reduce Battery Drain?

Not necessary.

Your battery will lose about one percentage point for every 25 cycles (note that you may not start to notice this right away because the actual capacity or maxFCC battery capacity exceeds the rated capacity), there isn’t much you can do, apart from using your iPhone less.

However, you can reduce the problem of premature battery failure by keeping the battery within its designated temperature zone and not overcharging it.

iOS feature called Optimized Battery Charging Does a good job of preventing premature battery damage from overcharging.

But notice that I said, “premature battery degradation.”

It regularly does nothing when the battery is dead. You cannot change the laws of physics.