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iPhone XS Max Charging overnight safe for battery?
- Thread starter Aljon
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Does it actually work tho? I've been using that feature since September and almost everyday check at what time my battery reaches full charge and it seems like it charges completely as it did before that feature. No slowing down, straight up from where I left it, to 100%. I think there should be idle hours where it doesn't charge (where it's at 80%) but I don't see those.
That would’ve been a good idea. Way too many people obsess over battery status now. It’s ridiculous.
If that was the case, there would not be any explicit need to create and expose the optimized charging feature, as the battery management circuit would have already been keeping the cell from reaching a true full charge even as it displayed 100% to the user, long before the feature was introduced.
No doubt the meter applies a relative figure on the low end, to prevent even more potentially harmful low voltage damage to the cell, but little doubt that 100% does represent a full ~4.20-4.35V, or whatever figure cells Apple use are rated for.
Your claim is wrong for obvious reasons.
There are also third party chargers, which talk directly with the TI gauge on the battery pack. The charge capacity is same whether connected to the phone or to the external charger.
(BTW, why do you make up these claims?)
Staying at 100% for long periods of time is not good for the battery but nothing major for just the overnight charge. Everyone does it, it’s just not optimal.
My iPhone 7 suffered from it horrendously because I’d often keep it plugged in at 100 during the day also. The thing is the battery on it was so small that I’d never feel comfortable going anywhere without it on 90% at least. It was that extreme which took it to 82% battery capacity after a year.
My iPhone 7 suffered from it horrendously because I’d often keep it plugged in at 100 during the day also. The thing is the battery on it was so small that I’d never feel comfortable going anywhere without it on 90% at least. It was that extreme which took it to 82% battery capacity after a year.
I usually charge my phone at night and generally don't charge my phone during the day (unless I really need to, which is becoming a bit more common lately), but my iPhone 7's battery has dropped to 87% in just under a year since it was replaced last year. The first battery was down to about that after around two years, under similar charging and usage patterns.
The new optimized charging option, is intended to minimize the time that the battery is in the 80 to 100% range. Plenty of evidence that doing that is better for the battery. And that Apple also understands that evidence.
Same with 0 to 20% range. But not much more Apple can do to automatically help us on the low end, besides the low power mode option they have already provided at 20%.
I wish they would provide an additional option to shut down charging completely at 80%. I.e., not top it up later to 100% like optimized charging does. 80% would be fine for my usage case, on most days. Don’t think they will though. Majority want to head out to work, a night out, or day at the beach, etc. etc. at 100%.
Same with 0 to 20% range. But not much more Apple can do to automatically help us on the low end, besides the low power mode option they have already provided at 20%.
I wish they would provide an additional option to shut down charging completely at 80%. I.e., not top it up later to 100% like optimized charging does. 80% would be fine for my usage case, on most days. Don’t think they will though. Majority want to head out to work, a night out, or day at the beach, etc. etc. at 100%.
Batteries fascinate me and appeal to my OCD tendencies. I used to be huge into battery management. My Android phone had an app that would have an alarm go off at 80% charge (or any % you want) and I even had a widget on the task bar that showed the battery temp in real time. Anything over 86F I believe is when very minor battery capacity loss can occur. Kinda lame, because ambient temps are always above that point in the summer.
I bought an 8+ shortly after launch and I did the 40-80 thing like it was my job. I never once charged it overnight. I traded it in on an xs max at 100% capacity after nearly a year. The xs max gave me PWM headaches, so I traded it back after one weekend and got another new 8+. This one I charged to 100% every night, and kept it in my pocket at 100% the vast majority of the time, considering I only really use my Android at work. That phone hit 99% battery health after 9-10 months or so. My daughter abused the hell out of her 8+ and it dropped to 94% in a year. My wife did the same, and her X was at 93% when we traded it in on her pro.
The 30-90% charge would definitely be easier on the new pros, but it leaves you at risk of a dead phone on the older models due to their small batteries.
8+ has a 2700mah battery, give or take. 30-90% would leave your availability mAh at 1620mah, which is less than the smaller 6/7/8, which already get poor battery life. An 8+ at 80% battery health has 2160mah left. I'd rather just use my phone and forget it, and if I still have it in 2 years I'll pay $50 for a new battery. Battery OCD gets a grip on you, but it feels good to be free of it in my experience.
I bought an 8+ shortly after launch and I did the 40-80 thing like it was my job. I never once charged it overnight. I traded it in on an xs max at 100% capacity after nearly a year. The xs max gave me PWM headaches, so I traded it back after one weekend and got another new 8+. This one I charged to 100% every night, and kept it in my pocket at 100% the vast majority of the time, considering I only really use my Android at work. That phone hit 99% battery health after 9-10 months or so. My daughter abused the hell out of her 8+ and it dropped to 94% in a year. My wife did the same, and her X was at 93% when we traded it in on her pro.
The 30-90% charge would definitely be easier on the new pros, but it leaves you at risk of a dead phone on the older models due to their small batteries.
8+ has a 2700mah battery, give or take. 30-90% would leave your availability mAh at 1620mah, which is less than the smaller 6/7/8, which already get poor battery life. An 8+ at 80% battery health has 2160mah left. I'd rather just use my phone and forget it, and if I still have it in 2 years I'll pay $50 for a new battery. Battery OCD gets a grip on you, but it feels good to be free of it in my experience.
We’ll obviously 80% is better than 95%, but nonetheless, when an iPhone is fully charged, it is not absolutely chock full at 100%. I agree with you in that a lower 40-80 is healthier for the battery, but being at ‘100%’ and then effectively disconnected for 6-7 hours is not going to damage the battery. In my opinion anyway.
As an aside, I have had my 2yr old MacBook Pro plugged into the mains almost permanently for the past twelve months, and Coconut Battery reports its ’health’ is 98.9% of design capacity. I think I’ll leave my iPhone topped-up at ‘100’ until the morning with no major concerns
Here's my personal experience, which is of no statistical value whatsoever.
I got an iPhone X back in December 2017. Since there are wall outlets pretty much everywhere I spend my time, I had no problem keeping the phone between 50 and 80% of charge (connecting and disconnecting the phone consciously from the mains). Until the phone's death, happened last month, I remember it going twice down to 20% and once down to 10%. It never went off by itself. It reached 100% a total of 4 times. (Yes, I used to have a problem).
It had no case and was never used for taxing processes, such as games. Its usage was, at low to mid brightness levels, calling, messaging and checking emails. I wouldn't even send emails from my phone, I prefer my laptop's bigger screen for that (ask me how I'm doing with my new minuscule 40mm Watch!). The phone was charged only with Apple's 5W charger and original Apple cables (1 meter and 2 meters). Therefore, and since I live in a region of temperate climate, I feel pretty safe in saying that the phone was probably never exposed to high temperatures.
According to coconut battery, the phone hit 90% capacity at around 310 cycles (15 months of age) and stayed between 89 and 91% until its death, occurred at 480 cycles (22 months). EDIT: the phone died of causes unrelated to the battery, which was still working fine.
Again, this experience will only have any actual meaning for me. Personally, I think it's not worth it.
I got an iPhone X back in December 2017. Since there are wall outlets pretty much everywhere I spend my time, I had no problem keeping the phone between 50 and 80% of charge (connecting and disconnecting the phone consciously from the mains). Until the phone's death, happened last month, I remember it going twice down to 20% and once down to 10%. It never went off by itself. It reached 100% a total of 4 times. (Yes, I used to have a problem).
It had no case and was never used for taxing processes, such as games. Its usage was, at low to mid brightness levels, calling, messaging and checking emails. I wouldn't even send emails from my phone, I prefer my laptop's bigger screen for that (ask me how I'm doing with my new minuscule 40mm Watch!). The phone was charged only with Apple's 5W charger and original Apple cables (1 meter and 2 meters). Therefore, and since I live in a region of temperate climate, I feel pretty safe in saying that the phone was probably never exposed to high temperatures.
According to coconut battery, the phone hit 90% capacity at around 310 cycles (15 months of age) and stayed between 89 and 91% until its death, occurred at 480 cycles (22 months). EDIT: the phone died of causes unrelated to the battery, which was still working fine.
Again, this experience will only have any actual meaning for me. Personally, I think it's not worth it.
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I haven't made up anything. I have read it before. It may even have been from an Apple source but I can't recall exactly. To my knowledge it is a fact that when an OS is reporting 100% battery charge, the battery is closer to ~97%. Still more than ideal, of course, but if we all wanted perfectly optimised battery health then we would never charge them past 80% under any circumstances.
On the whole I agree that a lower charge is better, but I don't agree that leaving a phone topped-out at 100% overnight is going to cause any material damage or ageing to the battery. It's not trickle-charging to bursting-point, it is disconnected and the phone draws its power directly from the outlet. You are free to disagree but I won't lose any sleep over it while my iPhone sits on its charger shortening its lifespan by two seconds.
For what it matters, I have been damaging my 8 Plus battery almost every might for more than two years and its current health is reported at 94%. I can live with that.
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The phone died of other causes, the battery was still working fine. I'll edit my post to clarify this point!
Your OCD is not hardcore enough if you don’t worry about apple geniuses going into a backroom and doing the process of installing a new battery in your phone.
I mean it more in the sense that they have to lift your screen to install the battery. The whole process would drive my paranoia to the max. Even if your phone ‘survives’ the ordeal without a single scratch, I’d worry whatever they had to do might have damaged anything that would only show up later. Or I would obsess about screen not as bright as before or attribute whatever bug or defect after to the battery replacement.
Edit: not to forget that I’ve read some posts on here saying that if they screw the battery replacement, they covered themselves with small letters saying it is the consumer’s own risk and you pay the costs if you want them to repair whatever they botched.
I've always heard if they mess it up they replace it with a white box phone. My OCD isn't that bad haha.
FWIW I didn’t do any of this. My old X had around 300 cycles and the phone was like 1.5 yrs old while the battery was like less than 1 year old. I used wireless/fast charging exclusively. I was at 94% health. According to Coconut it was usually 95-96%.
I am charging my X to 100% every day without overthinking much. Initially i seldom hit 20% or less, but recently as the battery is aging, that happens more often. I only had to top off my phone during the day on few occasions (usually when traveling and using GPS) as the phone usually last me all day no problem. Below is my coconut data. For contrast, Apple battery health shows 95%.
EDIT:
Did a coconut test today and the battery is back at 95%
EDIT:
Did a coconut test today and the battery is back at 95%
I always just plug it in and forget about it. Too many other things in life to worry about besides the battery. Apple has added a new battery charging learning feature that keeps the battery from charging fully until you are ready to use it again the next morning. Seems to work pretty well too.
I was told that Apple provides a service warranty on every repair. 90 days if I remember correctly.