There are many questions about iPhone batteries, and one that is always repeated is whether charging your iPhone battery at night won't affect the phone?
This discussion goes far beyond concern about moderate damage to the iPhone, since some people fear "overcharging" the battery of the same. And it is true that in previous years, some devices outside Apple They had charging problems or rather overloading, as happened to the Samsung Galaxy Note 7, which literally made it explode and had to be taken off the market, but that won't happen with an iPhone. Let's see why!
The problem is that some of the research and opinions on the internet are diametrically opposed. We are going to try to solve them in this article.
Why isn't it bad to let your iPhone charge overnight?
One thing all experts agree on is that phones are smart enough to not let overcharging occur. Extra protective chips inside make sure that can't happen on a tablet, phone or even a laptop.
Once the internal lithium-ion battery reaches 100% capacity, charging stops. But if you leave your phone plugged in overnight, there's going to be some kind of play between 99% charge and 100%, which won't negatively affect the iPhone for that reason, but it will negatively affect the phone's useful Vita, because they go away. "adding" charge cycles.
Excess heat affects the phone
Lithium-ion batteries hate two things: extreme cold and extreme heat. Repeatedly charging a phone in subfreezing temperatures can create a permanent metallic lithium coating on the battery's anode, according to BatteryUniversity, and you can't fix that problem—it's just going to deteriorate the battery faster.
Your phone's battery, and the entire device itself, hates heat, all the internal components of the phone can get hot, and it doesn't feel good to you. Your phone is a computer, and computers are enemies of heat.
If you leave your phone in the sun, a warning will soon appear that it needs to cool down before it can be used again, due to the high temperature it has reached.
Remove phone case to charge
Many experts recommend removing the iPhone from the case to charge it, at any time of the day, since this action will always heat up your device, even a little more if you use fast charging.
Do not put anything on top of the charging device or the iPhone, nor place it under the pillow, and avoid as much as possible any action that does not allow the iPhone to dissipate heat correctly.
Optimized charging cycles
Don't worry too much about this, in the end the iPhone is to enjoy, and there are really people obsessed with the subject. Plug your phone into the charger at night when you go to sleep, if that's more convenient, but if you want, you can connect a smart plug, and schedule the charge, to avoid that constant trickle of charge.
Discharging your phone completely, and then charging it to 100%, was recommended many years ago, but not today. Try not to let it get close to 0%, as it wears out the lithium-ion battery faster than normal. Partial download is always the way to go.
You should know that the battery is an element that deteriorates, always, no matter what you do. Over time, the battery cells will be able to hold a little less charge each time. Capacity decreases over time. You just have to leave the battery at zero, to recalibrate your iPhone's battery sensor, when it does not work correctly, it is recommended, when an iPhone is at 10 or 20% and suddenly turns off.
Longer lasting batteries
Plug in your phone before it asks you to enter a low power mode, iOS will ask you to turn it on when it drops to 20% power. Always try to plug it into the power when it is between 30% and 40%, and removed from the charge when it is between 80% and 90%. That is to say, Keep your phone battery charged between 30% and 80% to increase its lifespan.
Apple claims that with fast charging, iPhone batteries can increase by 50% in just 30 minutes. That requires a USB-C power adapter, which in turn means using a special USB-C to Lightning cable or a higher-voltage charger like the one for an iPad or even a MacBook.
You don't fast charge your phone if it's not compatible. It is another thing that will require more resources from the battery itself, and of course always use original chargers.
What can we do to improve battery charging?
A phone battery measures its lifespan in "charge cycles." That means every time you discharge 100% of the phone's capacity, that's a cycle count. But you don't necessarily have to go down to 0% for it to count as a cycle, I explain:
For example, let's say your phone is at 80%, and you go down to 30% (that's half the battery capacity), and you charge it back to 80% and use that 50% again, that's one cycle . You could use 75% one day, 25% the next; again, that's one charge cycle.
The iPhone battery has more or less a useful life of 400 to 500 charge cycles complete.
In 2017, Apple admitted that it was secretly slowing down the batteries of older iPhones in the name of "overall performance and extending device life." Apple then offered battery replacements for these phones at a discount for a time, under the name «Right to Reparation» becoming a bigger business, as in 2022 Apple launched a self-service repair store option that includes battery replacement options.