Fast charging - Samsung Galaxy S7 Questions and Answers

So I heard that some of the S7 users suggest not to use fast charge on a daily basis because it damages the battery pretty badly. Any thoughts on that? To be honest I really want to use it because it's a very nice feature to have and makes my life so much easier. Any thoughts or experiences?
Thanks in advance

Heats the battery up a lot more which will shorten it's life somewhat, and only takes about 15 mins off a full charge vs normal charging, not really worth it IMO
I only use it if I'm in a hurry and need as much charge as possible in a short time

*Detection* said:
Heats the battery up a lot more which will shorten it's life somewhat, and only takes about 15 mins off a full charge vs normal charging, not really worth it IMO
I only use it if I'm in a hurry and need as much charge as possible in a short time
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Actually it takes down nearly an hour or more of normal charge. So it really does count. (I use high voltage chargers on a daily basis, I don't have bad wallplugs trust me on this one)
My question is if the fast charging is that much worst than normal for the battery. I know what and why happens, I'm just curious about Samsung solution. What I'm interested in is other long time users experience of how much the battery life decreased by using fast charge a lot
Thanks for your answer tho

Tados99 said:
Actually it takes down nearly an hour or more of normal charge.
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Not for me and many others it doesn't, 15-20 mins difference max

*Detection* said:
Not for me and many others it doesn't, 15-20 mins difference max
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Anyways, you know what's up with the battery after a long time? Is there a huge decrease in battery life?

Not too much
Tados99 said:
Anyways, you know what's up with the battery after a long time? Is there a huge decrease in battery life?
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I have been using a S7 for 9 months charging it always with fast charging and I don't think that's the main issue of battery life decrease. I think it's more a Nougat problem. I'm still getting 4h SOT.
Hope it was usefull.

Related

[Q] Is it necessary to charge the phone for 24 hours?

Hi, I'm getting a Nexus 5 today, and by some reason, everyone in my country (sales person) recommends to charge a new phone for 24 hours to "maximize" the numbers of hours that the phone's battery will last after this initial charge, however, I've always find that theory not so logical, could you tell me if this actually works, or a simple full charge would do the job? Thank you, I appreciate the help!
I suppose that would be true if it were 1998 when all phones had NiCd batteries. Charge and go my friend and figure out what your friends are smokin' (sounds like some high grade stuff).
good day.
chopper the dog said:
I suppose that would be true if it were 1998 when all phones had NiCd batteries. Charge and go my friend and figure out what your friends are smokin' (sounds like some high grade stuff).
good day.
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Click to collapse
Haha, thanks! I will give it a regular full charge then!
Yea, it no longer matters at all. Charge whenever you are near power. Even if its only for a few %, it makes no difference. The days where you have to condition a battery by charging it to the top and then letting it drain all the way are over. Now you charge whenever you can and it makes absolutely no difference.
muyoso said:
Yea, it no longer matters at all. Charge whenever you are near power. Even if its only for a few %, it makes no difference. The days where you have to condition a battery by charging it to the top and then letting it drain all the way are over. Now you charge whenever you can and it makes absolutely no difference.
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Thank you, it's good to know that I'll do it that way!

S7 Charging

I heard many rumors about Li-ion batteries but my habit is to charge to 100%, im willing to keep this phone for year or two, will i notice big changes?
and are these rumors true? im usually charging phone from 20-30% percent to 100% once a day or maybe once in two day depending usage (but once in two day happens very very rare)
If rumors are true:
Rumors suggest that optimal variant is to keep it 40-80%, but if i charge it to 90% (to reset stats), will it be a problem?
Thanks in advanced
Sent from my SM-G930F using XDA-Developers mobile app
In my opinion, there is no problem!
The only thing I know it is really bad for battery is high temperature. Avoid quick charge at all costs. The slower you charge your battery, more battery life you have (long term).
Sent from my SM-G930F using XDA-Developers mobile app
goTouch said:
In my opinion, there is no problem!
The only thing I know it is really bad for battery is high temperature. Avoid quick charge at all costs. The slower you charge your battery, more battery life you have (long term).
Sent from my SM-G930F using XDA-Developers mobile app
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yea, fast charging only when im in hurry, otherwise i dont see any need for that feature.
Well im worried of that 40-80 tho, its kinda like emptiness when i unplug on 80 rly dont like messed battery stats and so on... but if the rumors are true then im gonna ask if i can charge to 90 to reset stats... if not then im gonna say NO to my habits and....
Sent from my SM-G930F using XDA-Developers mobile app
There are so many misconceptions about batteries! Everyone will say something different, so use the phone the way you want and enjoy it.
The truth is that a lot of the so-called "claims" about best practices have not been proven (hence why there's so much misunderstanding). Yes, high heat can indeed be bad for batteries, but there hasn't been much proven as to how much quick charge will take out of long-term battery life. Same goes for the "charge to 80% theory" - if you keep that mindset you'll always have less battery life than someone who charges to 100% (20% power - give or take depending on the accuracy of the battery meter is a lot, and probably far more than most people will see in a year. By then, you'll still have used up more charge cycles and your battery capacity will be less than when you first got the phone.
Basically, what I'm saying is that there probably isn't a lot that can be done to significantly improve the battery longevity over time. Sure, there are some ideas on "best practices" but just how much difference is it going to make?
Sent from my SM-G930W8 using Tapatalk
Devhux said:
There are so many misconceptions about batteries! Everyone will say something different, so use the phone the way you want and enjoy it.
The truth is that a lot of the so-called "claims" about best practices have not been proven (hence why there's so much misunderstanding). Yes, high heat can indeed be bad for batteries, but there hasn't been much proven as to how much quick charge will take out of long-term battery life. Same goes for the "charge to 80% theory" - if you keep that mindset you'll always have less battery life than someone who charges to 100% (20% power - give or take depending on the accuracy of the battery meter is a lot, and probably far more than most people will see in a year. By then, you'll still have used up more charge cycles and your battery capacity will be less than when you first got the phone.
Basically, what I'm saying is that there probably isn't a lot that can be done to significantly improve the battery longevity over time. Sure, there are some ideas on "best practices" but just how much difference is it going to make?
Sent from my SM-G930W8 using Tapatalk
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well, most fearing part is that this claim has been given by Battery University.
Yeah, we cannot prolong battery life forever, but im not keeping phone forever either, i want to get best results around about year or two, so my goal is to save battery as long as i can, no matter of cost or "No" to habits... so what you think, charging all time to 20-30->100% will not change situation that much about 1-2 years?
Sent from my SM-G930F using XDA-Developers mobile app
dude, just charge it whenever you want and that's it, why complicating ? My gf's lg g2 has same battery life for 3 years, and I can tell you she doesn't give a f*** when and at what percentage she will charge him. peace
NeoDJW said:
dude, just charge it whenever you want and that's it, why complicating ? My gf's lg g2 has same battery life for 3 years, and I can tell you she doesn't give a f*** when and at what percentage she will charge him. peace
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exactly that it is... they said that charging like that will preserve battery longevity and always charging to 100% will degrade it so it means ur gf does it right?
exactly that is my concern, i love to charge it 100% always...
Sent from my SM-G930F using XDA-Developers mobile app

Fast charging

Is fast charging on the S7 ok for the battery or it damages it by time ? I mean i want my phone to hold on for at least 3 years.
Should i disable this option to increase the total battery health ?
With or without fast charging...batterys dont last 3 years.
Sent from my SM-G930F using XDA-Developers mobile app
olafsand said:
With or without fast charging...batterys dont last 3 years.
Sent from my SM-G930F using XDA-Developers mobile app
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Umm yes they do... They last way longer than that actually. They just won't have the capability to hold the full charge amount (in mAh) anymore.
InsanePostman said:
Umm yes they do... They last way longer than that actually. They just won't have the capability to hold the full charge amount (in mAh) anymore.
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It may not have dawned on you yet but that battery does not "hold the full charge amount (in mAh) anymore" is in most users mind the very definition of "my f****** battery is gone"!
With the all the pressure on the manufacturers to make the batteries small and the urge to build faster units the usable battery lifespan takes a hit. Even a 20% shorter battery charge time feels frustrating when heavy users may already struggle to make it last a full day with some phones.
So, "way longer than that" (3 years)…? I don’t think so!
So as a conclusion should I DISABLE FAST CHARGING OR NOT?
RootNightmareX said:
So as a conclusion should I DISABLE FAST CHARGING OR NOT?
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I have never heard anyone being able to prove fast charging causing shortened battery life. There are a lot of guessing around, but the only difference I have seen is that the phone gets slightly warmer to the touch both after fast charging with cable and wireless. Not so hot so that I would suspect damage. After all, since the charging ends a lot faster the total amount of heat surely isn't higher than that with slow charging. Using the phone will sometimes make it warmer than this.
One could perhaps suspect a higher risk for fire with fast charging, but there is no proof for that either.
The choice is yours!
RootNightmareX said:
So as a conclusion should I DISABLE FAST CHARGING OR NOT?
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If you want battery to last longer you do not need to disable anything, instead follow these steps
1. Charge battery to 80 - 85% and not 100%. Stop leaving it overnight.
2. Don't let it fall to 0%, keep it between 20 - 80% charge.
3. Do use phone while charging. You do not want battery heating up.
4. Top up the battery in between your day but keep it within the range above.
5. Keep phone away from to much subglight or warm temperatures. Heat is the biggest enemy of Li-on batteries.
Sent from my SM-G930F using Tapatalk
takerhbk said:
If you want battery to last longer you do not need to disable anything, instead follow these steps
1. Charge battery to 80 - 85% and not 100%. Stop leaving it overnight.
2. Don't let it fall to 0%, keep it between 20 - 80% charge.
3. Do use phone while charging. You do not want battery heating up.
4. Top up the battery in between your day but keep it within the range above.
5. Keep phone away from to much subglight or warm temperatures. Heat is the biggest enemy of Li-on batteries.
Sent from my SM-G930F using Tapatalk
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Click to collapse
This might have been true many years ago for on old generation of batteries and phones, not for the batteries and smart phones of today. You cannot damage the battery by over charge, there is automatic over charge protection.
You equally cannot do harm to the battery by using it all the way down. There is protection against this also. The system will sense when it is approaching the level that will do any damage at all to the battery and shut down.
No need to worry, just use your phone. There is nothing you can do to make the battery better or worse!
gerhard_wa said:
This might have been true many years ago for on old generation of batteries and phones, not for the batteries and smart phones of today. You cannot damage the battery by over charge, there is automatic over charge protection.
You equally cannot do harm to the battery by using it all the way down. There is protection against this also. The system will sense when it is approaching the level that will do any damage at all to the battery and shut down.
No need to worry, just use your phone. There is nothing you can do to make the battery better or worse!
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Click to collapse
So i can enable fast charge and full charge/discharge the phone without any risk?
gerhard_wa said:
This might have been true many years ago for on old generation of batteries and phones, not for the batteries and smart phones of today. You cannot damage the battery by over charge, there is automatic over charge protection.
You equally cannot do harm to the battery by using it all the way down. There is protection against this also. The system will sense when it is approaching the level that will do any damage at all to the battery and shut down.
No need to worry, just use your phone. There is nothing you can do to make the battery better or worse!
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Click to collapse
No you are getting it wrong. Don't leave overnight not because it over charges but the fact that you don't want to go upto 100%. Plus everytime you go to 0 battery loses it one cycle. Whatever I say is based on Google research and latest research so it still holds true. For battery longevity never take it to extreme and avoid heating it.
RootNightmareX said:
So i can enable fast charge and full charge/discharge the phone without any risk?
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Click to collapse
You should Google or see YouTube videos. What I advise you is based on that research. Almost 99% people advise what I said. Rest is upto you.
Sent from my SM-G930F using Tapatalk
takerhbk said:
No you are getting it wrong. Don't leave overnight not because it over charges but the fact that you don't want to go upto 100%. Plus everytime you go to 0 battery loses it one cycle. Whatever I say is based on Google research and latest research so it still holds true. For battery longevity never take it to extreme and avoid heating it.
You should Google or see YouTube videos. What I advise you is based on that research. Almost 99% people advise what I said. Rest is upto you.
Sent from my SM-G930F using Tapatalk
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Click to collapse
So the most recommanded tips are: stay at 25-75% battery and try to not heat battery and disable fast charge?
RootNightmareX said:
So the most recommanded tips are: stay at 25-75% battery and try to not heat battery and disable fast charge?
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Click to collapse
Disable fast charging if it heats up your battery too much. Otherwise no need.
Sent from my SM-G930F using Tapatalk
gerhard_wa said:
It may not have dawned on you yet but that battery does not "hold the full charge amount (in mAh) anymore" is in most users mind the very definition of "my f****** battery is gone"!
With the all the pressure on the manufacturers to make the batteries small and the urge to build faster units the usable battery lifespan takes a hit. Even a 20% shorter battery charge time feels frustrating when heavy users may already struggle to make it last a full day with some phones.
So, "way longer than that" (3 years)…? I don’t think so!
Click to expand...
Click to collapse
That is a generalization based upon nothing but your personal opinion. All I said is that batteries absolutely last longer than 3 years.
Try this app.
https://play.google.com/store/apps/details?id=com.digibites.accubattery&hl=pt_PT
It gives information about charge/discharge and also battery health based on your use.

Overheati Mr

my phones battery temperature is always above 37c and when charging it goes up to 44c and it makes me worry about the battery cause high temperature is bad for lithium batteries. Is this normal? What can i do about this.
No replies?
adi.97 said:
my phones battery temperature is always above 37c and when charging it goes up to 44c and it makes me worry about the battery cause high temperature is bad for lithium batteries. Is this normal? What can i do about this.
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I've already said this to you in another thread, stop opening new threads and these type of questions could be asked in the general thread , maybe?? Would also get a faster response there. Also please just sell your u11 as it seems you and only you have these "problems." And I'm reporting you, again.
Sent from my HTC U11 using Tapatalk
No problems here, ran Waze along with UAPP attached to Dragonfly Black to aux for 1.5 hours. I don't have girlie hands, but still Temp was probably around 38c. 44c is not something to worry about.
schmeggy929 said:
No problems here, ran Waze along with UAPP attached to Dragonfly Black to aux for 1.5 hours. I don't have girlie hands, but still Temp was probably around 38c. 44c is not something to worry about.
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I see, my phones temperature is 37c now. When charging it gets hot. And that's worrying because it will damage the battery faster
adi.97 said:
I see, my phones temperature is 37c now. When charging it gets hot. And that's worrying because it will damage the battery faster
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What are you worrying for, it is not a Samsung.
schmeggy929 said:
What are you worrying for, it is not a Samsung.
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I worry about the battery getting worse and lasting less than before
adi.97 said:
I worry about the battery getting worse and lasting less than before
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That will happen no matter what.. enjoy your phone... get new one after year or two.
This guy just likes to troll, don't pay any attention to him. Look at his post history.
For the record, 44C is on the higher side but my M7 regularly hit 48C and had the same battery life it did out of the box a year later. There are varying degrees of battery quality. You'll kill your battery more leaving it to trickle charge all the time than from 44C temps. You'll also kill it faster the more times you charge it to 100% than the temps will.

Battery drain and battery life

Hmm I got an iPhone 8 at work and the battery brain and loss of battery on that is amazing, it barely leaks. On my pixel it just leaks battery life so easily and quickly.
I know it depends on how you use the device and 100 other factor but anyone else get this general feeling? I read Pixel 1 has heat issues with that version of CPU.
I recently purchased a used pixel.. I did expect the battery life to be better than it appears to be... i'm not sure if its because the battery is fairly degraded from the previous owners.. or if I have a slow drain.. or maybe just an unrealistic expectation of the smaller variant... but I am curious to know if other people see really good battery life on their phone.. Thanks!
I bought a used pixel as well. I have questioned the battery life as well. Then again I purchased this phone for 150.00 and the quick charge is a blessing. I did crack my screen so I was going to perform a battery change while I did the screen to see if that would fix my issue. Here is a screenshot of my battery.
Keep in mind that Apple uses some funny algorithms to report the battery percentage and usage in a way that makes the user perceive the battery life to be better than it actually is. Like, why do you think it stays at 100% for so long? When down to 3, 2, or 1%, the battery lasts forever until it the device finally shuts down. Don't trust Apple (iOS), and take everything they report with a grain of salt.
Jaws4God said:
I recently purchased a used pixel.. I did expect the battery life to be better than it appears to be... i'm not sure if its because the battery is fairly degraded from the previous owners.. or if I have a slow drain.. or maybe just an unrealistic expectation of the smaller variant... but I am curious to know if other people see really good battery life on their phone.. Thanks!
Click to expand...
Click to collapse
I also bought a used Pixel and found the battery life not to match my expectations, as it is quite average like mid range phones. I ran a Geekbench 3 battery test, and got the score of 1798, which is slightly below other Pixels, but not that much. So while the Pixel XL has a top level battery life, the smaller phone lacks of battery to run the powerful hardware. Still I am quite happy with battery life while soft usage watching videos.
Here are screenshots of my battery life all made without charging the phone in between. The first screenshot is with gaming and heavier apps (around 3h15 SOT), while the second and third are almost only soft usage with mainly YouTube and Netflix at 50% brightness, where I can get around 4hrs30 SOT, which I am happy with. Hope this helps somebody.
BenjyTec said:
at 50% brightness, where I can get around 4hrs30 SOT, which I am happy with. Hope this helps somebody.
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Click to collapse
so do you use the adaptive screen brightness or manually change it throughout the day?
Jaws4God said:
so do you use the adaptive screen brightness or manually change it throughout the day?
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Click to collapse
I set it manually.

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