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Okay I have a nexus S and the single most annoying thing about it is the time it takes to charge. It takes 2.5 hours to charge a 1500mah battery whereas this xperia arc S with the same battery capacity charges completely in less than an hour using the exact same charger on both phones. So obviously the nexus S has some cost cutting that it charges so slowly and yet it was never mentioned in any of the reviews.
Now at first I was ok with it but I got to use the arc S for a few days. Its like it changes everything when the phone charges in one third the time, you could care less if you get 30 min less screen on time or whatever. I just go charge the phone while going for a shower and bam its fully charged when I come back.
So upon investigation it seems like an issue with samsung phones. The galaxy S, galaxy S2 and galaxy nexus all take ridiculous amount of time to charge. So why is this never reported? Higher screen on time is no good if the charging time is so bad. My nexus S can go days without a full charge and really the only way to do it is over night.
Anyways this is LG nexus now so I was hopeful this problem wont be there. I checked out a friends optimus 2X and I was happy to see that just like the xperia it also charges in under an hour. However anandtech review says it takes 3 hours to charge and so does another user in the Q&A forum. So why on earth is not anyone complaining about it? Everyone is after the screen on time but you realize this is an even bigger issue?
And btw the iphone charges very quickly as well. And yes I realise that the nexus 4 has a 2100mah battery but it really doesnt justify the time it takes. This is almost a deal breaker for me. *sobs*
When I got my S2, I was disappointed with the charging time. But many custom kernals support fast charging by increasing the voltage level going to the charge circuit. With a tweak, my phone charged up in about 90 minutes.
But over time, you learn that the higher voltage has a detrimental effect on the total charge the battery will accept. In other words, when charging at a slower pace (lower voltage) the battery will actually absorb a higher density charge - making your battery last longer. After discovering this, I turned down the charge voltage on my S2 in favor of getting better battery life.
So I would avoid comparing the charge times with other phones. They may charge faster, but that's done by increasing the charge voltage, thus reducing battery capacity.
I have no reason to believe the increased voltage alters the total life of the battery, it just seems to affect the amount of energy the battery will absorb on a single charge.
tl;dr; The faster the battery charges, the shorter the battery life. I learned that from Upstairs Hollywood Battery School.
Seriously? Morning about charging time? GTFO!
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This isn't really a problem, it's just the way it is with all phones that use a large battery (ie. virtually all high end smartphones). The chargers are all 1A, so with a huge battery it will take ages to charge.
Efficiency is the bigger issue. The iPhone 4S/5 are pretty much the only phones to date that I've been able to charge at a decent pace off my computer's USB ports. I definitely need to buy more chargers and cables for my Nexus 4 but that's no big deal.
Dr Zoidberg said:
When I got my S2, I was disappointed with the charging time. But many custom kernals support fast charging by increasing the voltage level going to the charge circuit. With a tweak, my phone charged up in about 90 minutes.
But over time, you learn that the higher voltage has a detrimental effect on the total charge the battery will accept. In other words, when charging at a slower pace (lower voltage) the battery will actually absorb a higher density charge - making your battery last longer. After discovering this, I turned down the charge voltage on my S2 in favor of getting better battery life.
So I would avoid comparing the charge times with other phones. They may charge faster, but that's done by increasing the charge voltage, thus reducing battery capacity.
I have no reason to believe the increased voltage afters the total life of the battery, it just seems to affect the amount of energy the battery will absorb on a single charge.
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Its not a big deal as I said I have used an xperia arc S and I was satisfied with battery life, I cant imagine the xperia would have had much better battery life out of its 1500mah unit even if it was slow charging.
I mean unless we can observe what happens to the battery life of a fast charging phone by slowing its speed, we cant really conclude this since after all it was a "mod" applied on the S2.
twistedh said:
Seriously? Morning about charging time? GTFO!
Sent from my EndeavorU using xda premium
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Nobody asked you to post in the thread, charging time is a big deal its silly to think otherwise.
lambomanx1 said:
This isn't really a problem, it's just the way it is with all phones that use a large battery (ie. virtually all high end smartphones). The chargers are all 1A, so with a huge battery it will take ages to charge.
Efficiency is the bigger issue. The iPhone 4S/5 are pretty much the only phones to date that I've been able to charge at a decent pace off my computer's USB ports. I definitely need to buy more chargers and cables for my Nexus 4 but that's no big deal.
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This isnt true the HTC one X and sony xperia S charge very quickly and they have relatively big batteries.
Seriously, there's a big difference between a 1500mah battery and a 2100mah. Being that this is a lithium polymer battery it should charge a little faster. Also, like the above poster stated, slower charge is a higher density charge and better for battery longevity. I think if Samsung wanted faster charging they would have it. There is no physical barrier.
You guys know the faster your battery charges, the shorter the lifespan of the battery?
Head over to battery university
Sent from my Nexus 7 using xda app-developers app
Jayrod1980 said:
Seriously, there's a big difference between a 1500mah battery and a 2100mah. Being that this is a lithium polymer battery it should charge a little faster. Also, like the above poster stated, slower charge is a higher density charge and better for battery longevity. I think if Samsung wanted faster charging they would have it. There is no physical barrier.
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Its like 40% difference?
And isnt the nexus 4 hmm not having the best battery life despite such slow charging so I dont really feel it makes a big difference.
And btw sometimes it is a hardware limitation, nobody has been able to charge a nexus S faster not with kernels or other chargers.
tylerwatt12 said:
You guys know the faster your battery charges, the shorter the lifespan of the battery?
Head over to battery university
Sent from my Nexus 7 using xda app-developers app
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Yes, I know that. See post #2 in this thread.
I will edit my post to add a tl;dr
tylerwatt12 said:
You guys know the faster your battery charges, the shorter the lifespan of the battery?
Head over to battery university
Sent from my Nexus 7 using xda app-developers app
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Click to collapse
It doesnt seem like a big deal, the iphone has had fast charging since the first one and its battery lasts just fine. Ofcourse one day you will have to change it but why suffer for a year just because of it?
Another one of these threads... Oh brother.
sent via xda premium with nexus 7
I always wondered why the iPhone charged so much faster than any android phone I owned
I'm saying there's no technological barrier to the Nexus S charging faster. Samsung just made it that way. Could also be because it uses a Lithium Ion battery and not a lithium polymer battery. Depending the technology, li-po batteries can charge much faster safely because they don't have the same thermal limits as lithium ion and have much less chance of exploding or catching fire. Apple some years back boasted that they had new battery tech that would allow their batteries to charge faster. If you do some internet reading on lithium polymer batteries, there are some that have characteristics to do this. As far as I know, the iphone was made after they acquired this technology and have been using it in their mac books for years, as well as the iphone.
To me it's not a huge deal, but it is less convenient than if it were able to charge faster.
Jayrod1980 said:
I'm saying there's no technological barrier to the Nexus S charging faster. Samsung just made it that way. Could also be because it uses a Lithium Ion battery and not a lithium polymer battery. Depending the technology, li-po batteries can charge much faster safely because they don't have the same thermal limits as lithium ion and have much less chance of exploding or catching fire. Apple some years back boasted that they had new battery tech that would allow their batteries to charge faster. If you do some internet reading on lithium polymer batteries, there are some that have characteristics to do this. As far as I know, the iphone was made after they acquired this technology and have been using it in their mac books for years, as well as the iphone.
To me it's not a huge deal, but it is less convenient than if it were able to charge faster.
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Well I am fine with the nexus S its something I have come to live with however I dont want this thing to be the case in my next phone.
Microsoft boasted how quickly the surface RT charges due to some new technology. Really it does matter, I suppose good for those who dont really care about it.
ctowne said:
I always wondered why the iPhone charged so much faster than any android phone I owned
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I have tested 2 android phones that charge just as fast.
Xperia arc S and LG optimus 2X.
Takes me like 2hrs to fully charge my Nexus 4.
Sent from my Nexus 4 using Tapatalk 2
Gambler_3 said:
I have tested 2 android phones that charge just as fast.
Xperia arc S and LG optimus 2X.
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That's weird because I had a G2x and that charged slower than the iPhone I had at the same time
There is clearly a link between the temperature of the battery and the charging current in the thermal management of the device :
bat_temp(C) cpu(MHz) gpu(MHz) LCD index of predefined charging current
36 1512 400 248(400nit) 0 (900mA)
37 1296 325 228(360nit) 0 (900mA)
38 1296 325 208(325nit) 0 (900mA)
39 1188 200 195(300nit) 1 (700mA)
41 1188 200 195(300nit) 1 (700mA)
42 1188 200 195(300nit) 2 (600mA)
45 1188 200 195(300nit) 3 (400mA)
Two months have passed in 2014. As usual, releasing new cell phone would be the most exciting news for tech-fans. Right now most of people concern about the publishing of iPhone 6 and Samsung S5. Well, despite of iPhone 6, rumors said that Samsung S5 will adopt a special battery. What exactly is going on?
Few days ago, Phone Arena had posted an article about Samsung S5 battery information. It is said that Galaxy S5 will have a new type of Li-ion battery with 2900 mAh capacity, compared with 2600mAh in Galaxy S4, and rapid charging. With rapid charging technology deployed, it will get the S5 fully charged in under two hours.
The new type of Li-ion battery can store 20% more energy in the same footprint. Despite the increasing quantity in capacity, the battery size might stay the same, meaning more places for the internals, and a more compact handset.
Due to a more powerful performance in Galaxy S5, even the capacity increased, that doesn’t mean the standby time will sufficiently extend. In some ways, we still need backup battery or power bank to support our cell phone usage. If you tired of carrying heavy power bank or many backup batteries, you may try wireless charging receiver battery if you have Galaxy S4.
Anyway, no matter what S5 battery would be, as long as it keeps longer using time, it is acceptable, right?
Why is this in Samsung GALAXY Camera thread?
Sent from my EK-GC100 using xda app-developers app
I don't get what this has to do with the Galaxy Camera...
yihao96 said:
Why is this in Samsung GALAXY Camera thread?
Sent from my EK-GC100 using xda app-developers app
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my bad. didn't notice that..
Incanity said:
I don't get what this has to do with the Galaxy Camera...
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sorry. didn't notice in the wrong thread.
Hi. My T813 (with snapdragon) charges very slow. It needs almost an entire day to charge to 100%. I read that it only accepts original charger. Is someone here who has T813 and an original bundle charger? Can you please provide the exact model? Is it EP-TA12EWE?
I have the T-810 model, and noticed that after the Nougat update, my S2 now takes FOREVER to charge. This is using the OEM charger I have used since Day 1. Makes me wonder if Samsung tweaked something in the software for slower charging to maintain battery health.
I just got t813 from eBay for a few days. I don't know how long it charges from 0 to 100% but when I use it and charge at same time, it still charge up. So I guess it charges fast. I use model EP-TA12JWE with Rapow cable. BTW battery life is very good all stock no root yet.
The day before the Nougat update came to my S2 9.7 (Monday for me) my battery stopped charging almost completely.
It's been on the Samsung supplied charger for close to 36 hours and is just now at 38% - and the tablet has been off the whole time!
Of course my 1 year parts/labor warranty through Samsung ran out almost 6 weeks ago.
It's a damn shame because it has performed flawlessly until now and with the exception of the sharp edges on the body I absolutely LOVE the tablet...
PS: I have the smaller 8.0 version as well (as does my wife) and the charging/battery life are as expected.
kozakis01 said:
I read that it only accepts original charger.
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Nope, that's not true. I use an Anker quick charger.
JSS_83 said:
...after the Nougat update, my S2 now takes FOREVER to charge.
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Updates..
Apple used to use updates to obsolete older tech so as to make customers buy their new devices sooner. Irony.
erase111
Interesting info, Mr. Niceguy.
The Drok device will definitely take some mah.
But I highly doubt an iPad will be better.
No SD card support. Hell no!
Angus66 said:
The day before the Nougat update came to my S2 9.7 (Monday for me) my battery stopped charging almost completely.
It's been on the Samsung supplied charger for close to 36 hours and is just now at 38% - and the tablet has been off the whole time!
Of course my 1 year parts/labor warranty through Samsung ran out almost 6 weeks ago.
It's a damn shame because it has performed flawlessly until now and with the exception of the sharp edges on the body I absolutely LOVE the tablet...
PS: I have the smaller 8.0 version as well (as does my wife) and the charging/battery life are as expected.
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Click to collapse
I'm not sure of the laws where you are but I'm fairly certain that in Australia that doesn't matter. Consumer law says something about "reasonable life" and manufacturers cannot limit you to 1 year for something like that. You should look into it where you are just in case.
Sent from my SM-T800 using Tapatalk
In Europe they give at least a 2 years warranty on electronics. And some stores offer warranty extensions up to 4 years.
Personally, I think handsets should last at the very least 5 years, better yet a decade.
erase111
Unfortunately in the US it's simply whatever the mtg says it is - mostly 12 months parts/labor/defects...
Though, in the US electronics are even cheaper than in Europe.
Slow charging T-810
JSS_83 said:
I have the T-810 model, and noticed that after the Nougat update, my S2 now takes FOREVER to charge. This is using the OEM charger I have used since Day 1. Makes me wonder if Samsung tweaked something in the software for slower charging to maintain battery health.
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Click to collapse
I have the same issue
Or Samsung tweaked something in the software for slower charging so as to make you purchase the new s3 sooner.
My advice: avoid updates!
The Note 8 promised long battery service life, that is, high maintenance of original charge. Samsung promised that after a year, the battery would still retain 95% of its original capacity. Using Accubattery, my Note 8 has achieved this. This is vastly superior to what I experienced with the battery on my Galaxy S7.
I don't know much about batteries, but from owning Thinkpad laptops, I know you can get long service life from a lithium battery by deliberately not allowing it to charge to 100% of rated capacity (this is a setting in the Thinkpad battery firmware, accessible from Windows or Linux). If this is the same way that Samsung did this, it means the Note 8 battery has more capacity than it reports. (3300 mAh), achieving long service life by undercharging. This would mean that Samsung gets weaker reviews since out of the box it offers less runtime, but owners get the benefit of sustained runtime compared with previous phones. A pretty courageous move, if my speculation is true. The other possibility is that the Note 8/ Galaxy 8 has some very high spec battery technology which is significantly less exposed to typical capacity degradation.
So now, the Note 9 has a 4000 mAh battery but with almost no change in dimensions, which is curious. Is Samsung still claiming the long service life that it claimed in the Note 8/ Galaxy 8 generation?
I would like to know the answer to this as well.
The device is thicker and wider and 700mah isnt THAT much more physical size wise. But why wouldn't their claims on battery longevity still hold up?
timrichardson said:
The Note 8 promised long battery service life, that is, high maintenance of original charge. Samsung promised that after a year, the battery would still retain 95% of its original capacity. Using Accubattery, my Note 8 has achieved this. This is vastly superior to what I experienced with the battery on my Galaxy S7.
I don't know much about batteries, but from owning Thinkpad laptops, I know you can get long service life from a lithium battery by deliberately not allowing it to charge to 100% of rated capacity (this is a setting in the Thinkpad battery firmware, accessible from Windows or Linux). If this is the same way that Samsung did this, it means the Note 8 battery has more capacity than it reports. (3300 mAh), achieving long service life by undercharging. This would mean that Samsung gets weaker reviews since out of the box it offers less runtime, but owners get the benefit of sustained runtime compared with previous phones. A pretty courageous move, if my speculation is true. The other possibility is that the Note 8/ Galaxy 8 has some very high spec battery technology which is significantly less exposed to typical capacity degradation.
So now, the Note 9 has a 4000 mAh battery but with almost no change in dimensions, which is curious. Is Samsung still claiming the long service life that it claimed in the Note 8/ Galaxy 8 generation?
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Click to collapse
I actually didn't find the same situation to be the case on my S8. I found that at new, the battery could pull close to 6h SOT, and after 500 cycles or so (checked with Phone INFO app), it was closer to 3.5-4h. Not that 4h is a bad figure, and it was still fairly respectable, but it is not 95% retained. Same for my mom's S8, at first was doing 6.5-7h, and now is pulling closer to 3h. I got my battery replaced under warranty at the 1 year mark, but my mom hasn't and it's starting to show.
AB__CD said:
I actually didn't find the same situation to be the case on my S8. I found that at new, the battery could pull close to 6h SOT, and after 500 cycles or so (checked with Phone INFO app), it was closer to 3.5-4h. Not that 4h is a bad figure, and it was still fairly respectable, but it is not 95% retained. Same for my mom's S8, at first was doing 6.5-7h, and now is pulling closer to 3h. I got my battery replaced under warranty at the 1 year mark, but my mom hasn't and it's starting to show.
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It might be a bad software update. My Note 8 battery started to suffer until I upgraded to Oreo. Maybe some thing to do with refreshing the battery meter.
AB__CD said:
I actually didn't find the same situation to be the case on my S8. I found that at new, the battery could pull close to 6h SOT, and after 500 cycles or so (checked with Phone INFO app), it was closer to 3.5-4h. Not that 4h is a bad figure, and it was still fairly respectable, but it is not 95% retained. Same for my mom's S8, at first was doing 6.5-7h, and now is pulling closer to 3h. I got my battery replaced under warranty at the 1 year mark, but my mom hasn't and it's starting to show.
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Click to collapse
The long battery life technology was for the note 8 and going forward, not the s8.
mike2518 said:
The long battery life technology was for the note 8 and going forward, not the s8.
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Click to collapse
It was claimed by Samsung for S8/S8+ as well.
https://www.androidpolice.com/2017/...ill-degrade-less-quickly-than-the-galaxy-s7s/
timrichardson said:
So now, the Note 9 has a 4000 mAh battery but with almost no change in dimensions, which is curious. Is Samsung still claiming the long service life that it claimed in the Note 8/ Galaxy 8 generation?
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Click to collapse
Have we seen any official documentation of retaining that 95% battery in Samsung product webpages or leaflets/warranty information??
It was all about official "Claims" for the S8/S8+/Note 8.
Samsung haven't made the same "claim" for the Note 9 yet. Probably will, without mentioning in any official documentation/product pages.
mike2518 said:
The long battery life technology was for the note 8 and going forward, not the s8.
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https://www.androidpolice.com/2017/...ill-degrade-less-quickly-than-the-galaxy-s7s/
pcriz said:
The device is thicker and wider and 700mah isnt THAT much more physical size wise. But why wouldn't their claims on battery longevity still hold up?
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Yeah, it wpoould be best if they included 5.000mAh but 4.000 mAh is still acceptable.
I'd like to know how other's batteries are holding up. I've had my 9 for a month or two now and AccuBattery Pro is showing my battery health as 97% (3882mah) already. I'm not sure how reliable that app is for that stat, but dropping 3% already kind of has me irked a bit.
The only thing i have noticed is when my s7edge and s8+ got oreo my battery life on both those devices was no where near when i first got them. As for my note 9 the max SOT i have gotten so far is 8 hours and 12 min in QHD, i was sitting at 11% battery before i plugged it in.
I have the Mate 20 Pro and it absolutely smashes everything out there. It has outstanding battery life
RockwellB1 said:
I'd like to know how other's batteries are holding up. I've had my 9 for a month or two now and AccuBattery Pro is showing my battery health as 97% (3882mah) already. I'm not sure how reliable that app is for that stat, but dropping 3% already kind of has me irked a bit.
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There was a semi big debate about this on this forum. Accubattery Pro doesn't apparantly show the correct figure from the get go. I'm assuming you didn't use Accubattery from day one to show the before health stats to current? I say this because from day one mine showed 97% health or lower.
Aida64 app also shows the battery capacity at below 4000mAh from new. Hence why Accubattery doesn't show 100% health .
Either Samsung has not implemented 4000mAh batteries in many devices or they are designed in such a way as not to show their actual values in apps.
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My Note 9 is 5 days old, and Accubattery says 94%. It's nonsense.
So basically AccuBattery on the 9 is only really good for the charge alarm it sounds like. That makes me feel a bit better. Either way I get great performance so I'm pretty happy with the phone. I normally get between 8 and 10 hours sot so it blows all my older phones except my Note 4 with 12000mah battery out of the water.
RockwellB1 said:
So basically AccuBattery on the 9 is only really good for the charge alarm it sounds like. That makes me feel a bit better. Either way I get great performance so I'm pretty happy with the phone. I normally get between 8 and 10 hours sot so it blows all my older phones except my Note 4 with 12000mah battery out of the water.
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Click to collapse
For alarm charge,discarge :
Battery Charge Notifier
https://play.google.com/store/apps/details?id=com.utopi.batterychargenotifier
Limeybastard said:
There was a semi big debate about this on this forum. Accubattery Pro doesn't apparantly show the correct figure from the get go. I'm assuming you didn't use Accubattery from day one to show the before health stats to current? I say this because from day one mine showed 97% health or lower.
Aida64 app also shows the battery capacity at below 4000mAh from new. Hence why Accubattery doesn't show 100% health .
Either Samsung has not implemented 4000mAh batteries in many devices or they are designed in such a way as not to show their actual values in apps.
Sent from my SM-N960U1 using Tapatalk
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Click to collapse
Those apps are just estimating. There is no hardware components for such accurate power usage observation in the phones to tell you exactly how much the battery degraded/hold in the first place. Don't trust them that much + battery life in long run is not affected only from the battery degradation, but also from updates and not least important - the applications themself that becomes heavier with every update = the CPU/GPU scales higher and that needs more power and thus shorten the battery life.
Simple example, my HTC M8 eat for breakfast every app back then when it was released. Messenger? NP! Facebook? Lol, 10% CPU usage. And so on. Nowdays it will still run all of those fluid and fine, but instead of 1500MHz 2 cores for example, will use 4 cores at 2000GHz. This affects power usage when it's all apps basically. So it's not just the battery degradation.
That should sum it up about the topic.
My note 9 is also around 94% battery since day one. But this was not the case with the Note 8. I was at around 103-105% battery capacity on the Note 8 for a long time.
It is an estimate and not perfectly accurate but Samsung does have the ability to measure battery wear.
On jailbroken iPhones you can get the exact wear percentage and now iOS has battery wear shown directly in battery settings.
ihaveabu said:
My note 9 is also around 94% battery since day one. But this was not the case with the Note 8. I was at around 103-105% battery capacity on the Note 8 for a long time.
It is an estimate and not perfectly accurate but Samsung does have the ability to measure battery wear.
On jailbroken iPhones you can get the exact wear percentage and now iOS has battery wear shown directly in battery settings.
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Your first paragraph, same here. Hence why I mentioned either Samsung have changed something battery electronics wise or they are not giving us usable 4000mAh.
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A friend of mine went to a Samsung Service Center with his s9Plus for couple of questions. One of those questions was what the best method is for charging phone. They said minimum 5% then charge all the way up to 100 in one go. I was surprised with this answer since I did a lot of online research on this matter for my Note 9. I concluded and that the pro's are talking about keeping it between 20% and 80%.. and I'm doing that ever since..
Do we have an expert here on this matter?
Not an expert, but plenty of apple and android devices that I have kept for several years and never wore out a battery. My iPad mini is around 5 years old now, no issues. Galaxy s7 edge traded at 2 years old with no battery capacity issues. Old Samsung Galaxy Note 8 (the tablet from like 2012) still going strong, etc. I charge my phone when I feel like it (usually overnight) and take it off charger when I need to. I don't care if it's charged fully, I don't care how long is been charging. My life does not revolve around my phone battery percentage. This 20% - 80% thing is stupid. Your battery will far outlive the useful life of your phone.
Not an expert either but I do have the capacity to research this stuff myself. The age of the battery actually has little impact on it's capacity, so just because a device is X years old, doesn't mean it's battery capacity is going to have dropped significantly. It's the charge cycling of the cell that causes the degradation, temperature, depth of discharge, charging speed and the number of cycles a battery has had are more important. While I'd take the Service Centre rep's advise with a grain of salt, Samsung have clearly put a great deal of work into refining their battery technology, so do you need to worry? Probably not.
Although, if you think the battery will far outlive the useful life of your phone, look at Apple and all the batteries they're having to replace.
That all I know, and trust me, my devices go through plenty of charge/discharge cycles in the 2 to 8 years that I own them.