iPhone 13 How much battery do you have left on your iPhone 13 before you charge it?

[now i see it]

I do not see ‘more harm than good’ from cycling lower in the range in those articles… unless of course you can provide additional links to credible batt research. I’d be interested in seeing them.

Battery University has some tips to increase Li-ion battery life:

“In terms of longevity, the optimal charge voltage is 3.92V/cell. Battery experts believe that this threshold eliminates all voltage-related stresses; going lower may not gain further benefits but induce other symptoms(See BU-808b: What causes Li-ion to die?) Table 4”

BU-808: How to Prolong Lithium-based Batteries

Manufacturers take a conservative approach and specify the life of Li-ion in most consumer products as being between 300 and 500 discharge/charge cycles.…

batteryuniversity.com

 

[haplain]

I try to let it go as low as possible before charging which is usually between 15-30% each day.

 

[reppans]

Battery University has some tips to increase Li-ion battery life:

“In terms of longevity, the optimal charge voltage is 3.92V/cell. Battery experts believe that this threshold eliminates all voltage-related stresses; going lower may not gain further benefits but induce other symptoms(See BU-808b: What causes Li-ion to die?) Table 4”

BU-808: How to Prolong Lithium-based Batteries

Manufacturers take a conservative approach and specify the life of Li-ion in most consumer products as being between 300 and 500 discharge/charge cycles.…

batteryuniversity.com

Of course, I am aware of that article/statement from Batt Univ, but differ with your interpretation of what it means. Following the link to BU-808b, you of course get to the NASA cycling comment I linked above, which states:

“Charging to 3.92V/cell appears to provide the best compromise in term of maximum longevity, but this reduces the capacity to only about 60 percent”

The statement in bold implies that NASA is limiting PEAK voltage to 3.92V, or said another way, using a 60-0-60% cycling approach. That ‘stress-free zone’ is also corroborated by the other two research links I provided.

Are you suggesting that ‘3.92v optimal charge voltage’ means AVERAGE voltage?

 

[now i see it]

It’s unlikely NASA is running its satellite batteries down to zero.
As I interpret it, 3.92V is peak voltage. Charger does not exceed 3.92V.
The 60% capacity available when charged to 3.92V is ultimate usable capacity if the battery were then discharged to zero.

 

[ValerieDurden]

I charge overnight regardless of where my battery percentage is, I also never let my phone go below 50% if I can help it, 30% is the lowest I would go if I absolutely had to.

 

[MagOnetech]

I charge my phone when and if I want to. At the end of the day the battery is going to degrade no matter how many “battery charge tips” I am given.

The other morning I was on my way to the stadium for a game, my phone was at 95%, I plugged it in in my car, unplugged when I got out the car at the stadium at 100%. 🤷‍♂️

When we were leaving the stadium that night my battery was at around 70%, I plugged it in anyway as I was planning to drop my car home and Uber out to meet some friends, so wanted my phone to be 100%.

I plug in when I want, not depending on the battery %.

Keeping your phone fully charged will always make you feel safe, haha.

 

[MagOnetech]

I generally charge my phone when it gets to around 20%
I usually let it charge to around 80-90%
If I'm going to be out a lot and know I won't be able to get to a charger easily, then I'll go to 100%.
I do not leave it at 100% and remain connected to the charger for too long (eg overnight). As soon as I notice it's at 100% I remove it from the charger.
I do not use magsafe/wireless charging as I do not like the extra heat it generates.

There is a reason why Apple decided to implement 'Optimized Charging', which charges the handset to 80% and then gives it the last boost to 100% when it 'thinks' you are going to unplug and use the handset. They do not recommend teh handset sits at 100% and connected to the charger for too long. I simply mimic this behaviour, although in a manual fashion.....

13 months into my 13 Pro Max and battery health is at 100%

Wow, then your battery is in good shape, amazing, I have used my iPhone 13 for 10 months, and the battery health is only 97%.
Does Apple recommend not charging the battery to 100%? Unbeknownst to me, I charge my phone to 100% every time before I unplug the charger. But I agree, it's not good for your phone's battery to be connected to the charger for a long time after it's fully charged.

 

[MagOnetech]

I generally charge my phone when it gets to around 20%
I usually let it charge to around 80-90%
If I'm going to be out a lot and know I won't be able to get to a charger easily, then I'll go to 100%.
I do not leave it at 100% and remain connected to the charger for too long (eg overnight). As soon as I notice it's at 100% I remove it from the charger.
I do not use magsafe/wireless charging as I do not like the extra heat it generates.

There is a reason why Apple decided to implement 'Optimized Charging', which charges the handset to 80% and then gives it the last boost to 100% when it 'thinks' you are going to unplug and use the handset. They do not recommend teh handset sits at 100% and connected to the charger for too long. I simply mimic this behaviour, although in a manual fashion.....

13 months into my 13 Pro Max and battery health is at 100%

Wow, then your battery is in good shape, amazing, I have used my iPhone 13 for 10 months, and the battery health is only 97%.
Does Apple recommend not charging the battery to 100%? Unbeknownst to me, I charge my phone to 100% every time before I unplug the charger. But I agree, it's not good for your phone's battery to be connected to the charger for a long time after it's fully charged.

 

[Helmsley]

At the end of the day the battery is going to degrade no matter how many “battery charge tips” I am given.

Very true, but I think the theme of this thread is about reducing battery wear; which not everyone will care about of course.

 

[Jackbequickly]

Setting an alarm in the middle of the night to unplug the charging cable seems like an absurd act lol. I also sometimes charge my iPhone overnight but less often, I usually charge during the day, or when my iPhone is running low on battery.

‘I think you are obsessing too much about your battery. I know other do not agree but wish Apple would give us a utility where we could set out phone to stop charging at a particular percentage. I know this is a hot button to some but it is fun to watch them blow up!😳

 

[Ifti]

Wow, then your battery is in good shape, amazing, I have used my iPhone 13 for 10 months, and the battery health is only 97%.
Does Apple recommend not charging the battery to 100%? Unbeknownst to me, I charge my phone to 100% every time before I unplug the charger. But I agree, it's not good for your phone's battery to be connected to the charger for a long time after it's fully charged.

No, you can charge to 100% without issue - Apple does not recommend not to.
However, it's not advisable to charge to 100% and then leave the phone plugged in at sitting at the full 100% for long periods of time. Once it's at 100% remove it from its charger so that the battery can start to deplete as normal.

 

[tarsins]

I'm using a 14PM now but the same applied to my 13PM. I'll usually put in on charge overnight if it's below 40%. That's just a habit though and it doesn't really matter unless you let it get really low. My sleep focus is also configured to turn on power-save and by the morning that will have turned off.

YMMV but I'll have moved on to the next version of iPhone before the battery is affected in any significant way.

 

[reppans]

It’s unlikely NASA is running its satellite batteries down to zero.
As I interpret it, 3.92V is peak voltage. Charger does not exceed 3.92V.
The 60% capacity available when charged to 3.92V is ultimate usable capacity if the battery were then discharged to zero.

We have the same interpretation then, but clearly this NASA cycling, and also the other two links I provided above, are all heavily skewed on the lower-end of SoC cycling bands. That’s different than your OP here suggesting cycling bands averaging 50% (eg 70-30), and in the past, weren’t you a big advocate ‘keep it over 30-40%’ method?

 

[MagOnetech]

No, you can charge to 100% without issue - Apple does not recommend not to.
However, it's not advisable to charge to 100% and then leave the phone plugged in at sitting at the full 100% for long periods of time. Once it's at 100% remove it from its charger so that the battery can start to deplete as normal.

I get it, thank you.

 

[MagOnetech]

‘I think you are obsessing too much about your battery. I know other do not agree but wish Apple would give us a utility where we could set out phone to stop charging at a particular percentage. I know this is a hot button to some but it is fun to watch them blow up!😳

I don't pay much attention to charging in my life, but my curiosity makes me come here to ask you some questions, haha, thank you for your enthusiasm.

 

[MagOnetech]

I try to let it go as low as possible before charging which is usually between 15-30% each day.

I think 20%-30% of the remaining power is more suitable for charging. Generally speaking, the phone will automatically remind you that it needs to be charged when the power is less than 20%. It is more appropriate to charge before it prompts.

 

[MagOnetech]

I charge overnight regardless of where my battery percentage is, I also never let my phone go below 50% if I can help it, 30% is the lowest I would go if I absolutely had to.

This is very good, I think 30% of the remaining power is a more suitable time to charge, because the phone will automatically remind you that it needs to be charged when it is less than 20%.By the time it alerts, the phone may have been overloaded.

 

[MagOnetech]

It’s unlikely NASA is running its satellite batteries down to zero.
As I interpret it, 3.92V is peak voltage. Charger does not exceed 3.92V.
The 60% capacity available when charged to 3.92V is ultimate usable capacity if the battery were then discharged to zero.

So, do you think keeping your iPhone battery at 60% is the best thing to do?

 

[MagOnetech]

I'm using a 14PM now but the same applied to my 13PM. I'll usually put in on charge overnight if it's below 40%. That's just a habit though and it doesn't really matter unless you let it get really low. My sleep focus is also configured to turn on power-save and by the morning that will have turned off.

YMMV but I'll have moved on to the next version of iPhone before the battery is affected in any significant way.

I agree that charging below 40% is fine, but I don't recommend charging overnight.

 

[MagOnetech]

We have the same interpretation then, but clearly this NASA cycling, and also the other two links I provided above, are all heavily skewed on the lower-end of SoC cycling bands. That’s different than your OP here suggesting cycling bands averaging 50% (eg 70-30), and in the past, weren’t you a big advocate ‘keep it over 30-40%’ method?

The topic you two are discussing makes me a little dizzy because I don't quite understand it. But you can discuss, I also pay attention to your topics.

 

[Hele]

Wow, then your battery is in good shape, amazing, I have used my iPhone 13 for 10 months, and the battery health is only 97%.
Does Apple recommend not charging the battery to 100%? Unbeknownst to me, I charge my phone to 100% every time before I unplug the charger. But I agree, it's not good for your phone's battery to be connected to the charger for a long time after it's fully charged.

No, you can charge to 100% without issue - Apple does not recommend not to.
However, it's not advisable to charge to 100% and then leave the phone plugged in at sitting at the full 100% for long periods of time. Once it's at 100% remove it from its charger so that the battery can start to deplete as normal.

Exactly. It's ok to charge to 100%, just don't leave it there, plugged in forever. I charge overnight, every night with my Apple MagSafe charger. I'm at 100% every morning. I also have optimized battery charging turned on and have noticed that it charges up to 80% and hangs there for a while then tops off to 100%. Even with whatever algorithm is controlling it, it seems to get to 100% sooner than I think it should. For example, it reaches 100% by like 3am instead of 5am when I'm getting up at 530 am every morning. Even so, 2.5 hours at 100% is better than 5-7 hours sitting at 100% so I don't sweat it; it just seems like the optimized charging should narrow it down a little better than that even.

In a nutshell, don't do this: arrive at the office and leave your iPhone plugged in charged to 100% while you sit at your desk and work on your computer all day.

 

[Ifti]

Would be nice to be able to give the handset a set manual time for when you want it at 100%, or for it to top up when you have your morning alarm set.

For example, if I have my alarm set for 6am, and I put my iPhone on charge at 11pm the night before, the phone should be intelligent enough to know I will be waking up to the alarm at 6am, so should charge to 80% overnight, and give it the last push to 100% from 5:30am or so - so it's just reached 100% at 6am when the alarm sounds.....

Well.....makes sense to me at least.... lol

Not sure how the optimised charge algorithm works at the moment, but it just seems too inaccurate.....

 

[Hele]

Would be nice to be able to give the handset a set manual time for when you want it at 100%, or for it to top up when you have your morning alarm set.

For example, if I have my alarm set for 6am, and I put my iPhone on charge at 11pm the night before, the phone should be intelligent enough to know I will be waking up to the alarm at 6am, so should charge to 80% overnight, and give it the last push to 100% from 5:30am or so - so it's just reached 100% at 6am when the alarm sounds.....

Well.....makes sense to me at least.... lol

Not sure how the optimised charge algorithm works at the moment, but it just seems too inaccurate.....

Yes, I have wondered why it doesn't have that option or at least the option to use the everyday wake-up alarm. Seems so obvious lol 🤷‍♂️

 

[Kod777]

Everyone taking about their 13, 14, 14 Pro:
mY bAtTeRy iS sO bAd (full day of use)
Meanwhile, my SE 2020:
I'll just load up a gam-*battery dies*

 

[MagOnetech]

Would be nice to be able to give the handset a set manual time for when you want it at 100%, or for it to top up when you have your morning alarm set.

For example, if I have my alarm set for 6am, and I put my iPhone on charge at 11pm the night before, the phone should be intelligent enough to know I will be waking up to the alarm at 6am, so should charge to 80% overnight, and give it the last push to 100% from 5:30am or so - so it's just reached 100% at 6am when the alarm sounds.....

Well.....makes sense to me at least.... lol

Not sure how the optimised charge algorithm works at the moment, but it just seems too inaccurate.....

Haha, maybe there will be such a timer setting function in the future. If you don't want to keep charging overnight, you can choose to charge during the day, which gives you more control over the time.