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iPhone 11 Pro Left my iPhone Pro to charge over night...Twice!

Look at it this way…

Will eating McDonald's a couple times kill you? No.

Will making McDonald's a regular part of your diet kill you? No, and many people live long lives despite unhealthy diets.

But, such a diet will have long term effects on your health, and performance, and could result in premature death.

In a perfect world, everyone would eat square meals and live to 100.

But, in the real world, many don't, live their lives as they choose to, and for them, never notice a difference, nor care, knowing that their habits may not be the best.

Everyone has to find their own balance.
 
JPack said:
Won't be optimal for the battery.

If it were a good thing to leave it charged overnight, Apple wouldn't need to introduce the feature in iOS 13.
Click to expand...
Not optimal, but nothing exactly bad either.
 
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JPack said:
You provided an answer to a question nobody asked.

This is not about "overloading." The question is about battery health.

Decades of research has shown keeping li-ion for extended periods of high voltage (full charge) accelerates battery aging.

Instead of your Google search results, I'll trust info presented at seminars by battery researchers like Dr. Jeff Dahn. He has a bit more credibility and works for Tesla, unlike random posts on the Apple Support Forum.
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How did my post not answer the op question. He asked if charging overnight will harm the battery.
No. It will not.
 
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I charge every night for as long as I can remember. I don’t care about battery health and it won’t be my problem - I upgrade annually.

My battery health does stay good. My XS was at 97% when I got rid recently.
 
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JPack said:
You provided an answer to a question nobody asked.

This is not about "overloading." The question is about battery health.

Decades of research has shown keeping li-ion for extended periods of high voltage (full charge) accelerates battery aging.

Instead of your Google search results, I'll trust info presented at seminars by battery researchers like Dr. Jeff Dahn. He has a bit more credibility and works for Tesla, unlike random posts on the Apple Support Forum.
Click to expand...
The real question was did he harm his battery in two nights. And to this its a NO.
in 2 years you might loose 5 % battery health to this. The other 20% come from normal use.

now Tesla has to worry for a lifespan of 10 years and a new battery costs thousands of $$$. meanwhile a new iphone battery $50-70.
Thats why u shouldn’t get paranoid over your phone
 
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Fried egg on toast said:
What? I’ve been charging my iPhones overnight since the 4, and it’s been fine.
Are people really this paranoid?
Click to expand...

Probably all stems from back in the old days, pre-Lithium-Ion, when overcharging was a very real problem.
Some people unfortunately still seem to apply the old rules, because that’s what they know, without having kept up to date on technology changes.

My father-in-law and I have had some of these very discussions, he is quite tech literate, unfortunately a lot of it is from 20 or more years ago. But at least he’s quite happy to learn things that have changed and differ from his old understanding.

As for the topic, as many people have said, no, it won’t harm the battery at all, they’re designed to cope with just that sort of thing.
 
maerz001 said:
The real question was did he harm his battery in two nights. And to this its a NO.
in 2 years you might loose 5 % battery health to this. The other 20% come from normal use.

now Tesla has to worry for a lifespan of 10 years and a new battery costs thousands of $$$. meanwhile a new iphone battery $50-70.
Thats why u shouldn’t get paranoid over your phone
Click to expand...

Technically, you're wrong. It's not like you do it for 11 months and 29 days then get to 1 year and lose 2.5%, then another year and lose the other 2.5%. Using your figures, if you lose 5% battery over 2 years then yeah some damage has been done by doing it for 2 days.

The point isn't that no damage is done, because that's just not true. The point is what you said in the remainder of your post. Damage is done, but it's so infinitesimally small that over 2 nights your probably wouldn't ever notice and even if you did it for years it would be overshadowed by battery wear from other factors.
 
nicho said:
Technically, you're wrong. It's not like you do it for 11 months and 29 days then get to 1 year and lose 2.5%, then another year and lose the other 2.5%. Using your figures, if you lose 5% battery over 2 years then yeah some damage has been done by doing it for 2 days.

The point isn't that no damage is done, because that's just not true. The point is what you said in the remainder of your post. Damage is done, but it's so infinitesimally small that over 2 nights your probably wouldn't ever notice and even if you did it for years it would be overshadowed by battery wear from other factors.
Click to expand...
Yes. Sure to keep it simple. Calling a 0.007% decrease for the 2 nights a damage would be weird. No?
 
Keep it between 40% to 80% if you can't do that then go with 30% to 90% and your battery life will last longer that is if you want to keep your phone for a awhile 2 years and over.
 
JPack said:
You provided an answer to a question nobody asked.

This is not about "overloading." The question is about battery health.

Decades of research has shown keeping li-ion for extended periods of high voltage (full charge) accelerates battery aging.

Instead of your Google search results, I'll trust info presented at seminars by battery researchers like Dr. Jeff Dahn. He has a bit more credibility and works for Tesla, unlike random posts on the Apple Support Forum.
Click to expand...

why wouldn't apple simply limit the battery to 20-80% while showing 0-100%, if it would so drastically improve it.
Seems like the easiest thing to implement.
 
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Ploki said:
why wouldn't apple simply limit the battery to 20-80% while showing 0-100%, if it would so drastically improve it.
Seems like the easiest thing to implement.
Click to expand...

Apple already implemented a charge management feature in iOS 11.3. But it doesn't kick in until iOS thinks you're in a prolonged period of full charge.

About iPad and iPhone charge-management feature - Apple Support

iPadOS and iOS include a charge-management feature to maintain battery health when iPad or iPhone XS, iPhone XS Max, iPhone XR, or later is connected to power for prolonged periods of time.
support.apple.com support.apple.com

It's clear that Apple recognizes prolonged periods of full charge negatively affects battery health. But like most Apple features, they get to decide how it should work.
 
Legion103 said:
Left my iPhone pro Max charging overnight twice...usually I don’t do that, but fell asleep.

Will this hurt the battery?
Click to expand...

I've done this with my XS Max over 300 times (pretty much every night since I bought it) and my battery is just fine.
 
JPack said:
Won't be optimal for the battery.

If it were a good thing to leave it charged overnight, Apple wouldn't need to introduce the feature in iOS 13.
Click to expand...
This will not ever harm the battery. These rumors need to stop.
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bigjnyc said:
I've done this with my XS Max over 300 times (pretty much every night since I bought it) and my battery is just fine.
Click to expand...
Same, and my battery after exactly one year is still at 100% capacity.
 
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JPack said:
Yes, that's why Apple added Optimized Charging in iOS 13. Because that's a myth.
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There is some wiggle room on both ends with other factors affecting battery life other than just charging, such as heat. Based on conventional wisdom, it's seemingly better for the battery to not be kept close to 100% for long periods of time, but the amount of "damage" that might happen over longer periods of time depends on other factors.

Apple recognizes this and implemented optimized charging. My guess on it's effectiveness is again dependent on a number of factors, but on the surface it's a good thing.
 
JPack said:
Yes, that's why Apple added Optimized Charging in iOS 13. Because that's a myth.
Click to expand...
I say it's a myth because I frequently leave my phones connected to a charger for a day or even 2-3. Never have I ruined a battery. I've done this t every iPhone since the original and every Android phone I've had.

My experience says it simply isn't harming the battery. My one year old XS Max still says it's capacity is 100%. It's been plugged in since Monday morning.

I have 5 phones activated so many of them stay on chargers for a day or two.
 
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JPack said:
Won't be optimal for the battery.

If it were a good thing to leave it charged overnight, Apple wouldn't need to introduce the feature in iOS 13.
Click to expand...
Perhaps apple introduced that feature to have an excuse to deny warranty claims for degraded batteries
 
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