This is How an *iPhone* Charges
To know how good the ‘Optimised Battery Charging’ works, we create an Automation in the ‘Shortcuts’ App that stores the ‘Time of the day’ when the battery reaches certain levels while charging.
Let’s keep the percentages 5%, 10%, 15%,…,100%, as they’re default in the Automation and can be easily monitored.
Now, create automations for every percentage as shown below.
Now, let’s put the iPhone in Flight mode. Because:
- Network fluctuations don’t disturb the graph.
- No one would phone me while the careful experiment is going on.
We close all the apps too, which consume power.
Meanwhile, here are some things to consider.
- I use Ausmo XTRA Charge PD (Two Port) 18W Charger.
- My Cable — Lightning to Type C (PD) CORE Cable.
- I’m in the latest iOS 14.3 on my iPhone XR.
- My Battery Maximum Capacity recently dropped to 98%. It’s supporting ‘Peak Performance Capability’. Optimised Battery Charging is enabled.
Optimised Battery Charging:
The charger charges fast from 0% to 80%, but trickles past 80%. So we assume the graph slows down past 80%.
The battery’s full now! Let’s see the results.
I found out the difference (in seconds) between the times, and created a list from the results we got.
But Hey! We didn’t obtain all the percentages we actually planned for. It could be due to a bug. You could try it too.
But I hope we’d find a pattern. So it makes no difference.
Let’s make a Graph
We find an interesting thing here.
From 0% to 80%, the angle is about 22%, then, After 80%, the angle is 50%.
Most importantly, there’s a high slope change from 95% to 100%. It indicates very slow charging. A full battery isn’t healthy for a Mobile phone. Apple made a good algorithm that highly trickles from 95% to 100%, caring for the battery.
This is the Optimised Battery Charging of Apple
It’s just a curious experiment. It proves the charging graph would be a straight line, not an exponential or logarithmic, or any other arbitrary, Also showing how the graph varies in the course, to protect the battery.