Practice English Speaking&Listening with: Why You Shouldn't Charge An iPhone To 100%

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Many iPhone users like to charger their device to 100%.

Likely since its a satisfying number that ensures your device will last as long as possible.

But its not something you should do on a regular basis, and Ill explain why right


So the type of batteries used in most modern electronics, including the iPhone, is lithium-ion.

And its capacity is only good for a certain number of charges, or cycles, before it begins

to degrade.

You can check how much your battery has degraded right now by going to battery settings and

tapping battery health.

My iPhone 12 is at 95% of its full capacity, which means 5% of the battery cells have worn

out from being charged and discharged over the past year.

Obviously we want to prevent our batteries from wearing out as much as possible, which

is why charging all the way to 100% and allowing the battery level to drop down to ten percent

or less is considered bad practice.

These deep discharges exhaust the lithium battery cells faster than charging to eighty

or ninety percent and getting it back on its charger by the time it reaches thirty or forty


This not only ensures you get as much battery life out of your iPhone for as long as possible

for those days when you really need it, but it also prevents performance issues caused

by deeply degrading batteries.

And Apple tries to alleviate this issue with software features like optimized battery charging.

Where the iPhone will wait to charge past 80% until it knows youre ready to use it

based on your charging routine.

So it won't sit at 100% for hours at a time.

But if that does happen, youll actually receive a notification that says your iPhone

should be removed from power and discharged to improve battery health.

But deep discharges also negatively effect the battery, which is where low power mode

comes in.

At 20%, your iPhone will automatically begin throttling performance and background tasks

to prevent the battery from draining.

And while that means more battery life for the user, it also means a higher likelihood

that the device will be connected to power before reaching an extremely low battery percentage.

Its best to keep your battery level between forty and eighty percent when possible, so

on those busy days when you need every minute of battery life possible, your device will

be there to deliver.

This is Greg with Apple Explained, thanks for watching till the end, and Ill see

you in the next video.

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