Options have 50 char limit.. So here are longer descriptions:
- Yes. Fast charging is always ON
- Never. My battery lasts the whole day and I (slowly) charge it overnight. And I am either not in a hurry or good at planning my charging time
- Sometimes. I turn it ON only when I need it
- I don't care or know anything about it. I use default settings
Is there an option to turn it off? I haven't seen it. But anyway i use my old s3 charger for all my devices. I don't trust fast chargers. They kill batteries.
Slow charge really isn't that slow.
Airtioteclint said:
Is there an option to turn it off? I haven't seen it. But anyway i use my old s3 charger for all my devices. I don't trust fast chargers. They kill batteries.
Slow charge really isn't that slow.
Click to expand...
Click to collapse
Regarding fast changing killing batteries the charger provides a voltage to the phone, the power management controller monitors battery voltage and temperature , I would assume these have limits and will take control if outside of range in a similar way to throttling cpu frequencies when it gets too hot.
Under battery settings
paul_59 said:
Regarding fast changing killing batteries the charger provides a voltage to the phone, the power management controller monitors battery voltage and temperature , I would assume these have limits and will take control if outside of range in a similar way to throttling cpu frequencies when it gets too hot.
Under battery settings
Click to expand...
Click to collapse
Where did you find this setting?
I'm using "bad" cables for show charging but being able to limit the current and the charging state without root, like on Sony smartphones, would be great
Airtioteclint said:
Is there an option to turn it off? I haven't seen it. But anyway i use my old s3 charger for all my devices. I don't trust fast chargers. They kill batteries.
Slow charge really isn't that slow.
Click to expand...
Click to collapse
The option is in Device Care > Battery > Settings
Personally I leave fast charge turned on and use a bunch of different chargers with the phone, I just have Battery charge limit set to stop charging at either 80% or 90% (depending on when I think I'll be next able to charge) and try to start changing between 20% and 40%.
Caffeineshock said:
Where did you find this setting?
I'm using "bad" cables for show charging but being able to limit the current and the charging state without root, like on Sony smartphones, would be great
Click to expand...
Click to collapse
Using "bad" or cheap cables is really not the best idea, they often don't meet the USB C spec and could damage your device. Try to stick to high quality but low current chargers (Like old phone chargers) or disable Fast charging as previously mentioned.
willhemmens said:
The option is in Device Care > Battery > Settings
Personally I leave fast charge turned on and use a bunch of different chargers with the phone, I just have Battery charge limit set to stop charging at either 80% or 90% (depending on when I think I'll be next able to charge) and try to start changing between 20% and 40%.
Using "bad" or cheap cables is really not the best idea, they often don't meet the USB C spec and could damage your device. Try to stick to high quality but low current chargers (Like old phone chargers) or disable Fast charging as previously mentioned.
Click to expand...
Click to collapse
Strange. My n9600 doesn't have that. I got device maintenance and there's some battery saving options in there but no fast charge option. Oh well the s3 charger works for me.
Edit - nvm found it.
Airtioteclint said:
Strange. My n9600 doesn't have that. I got device maintenance and there's some battery saving options in there but no fast charge option. Oh well the s3 charger works for me.
Click to expand...
Click to collapse
Under the battery menu press the three dots in the upper right corner and select advanced settings. As for the poll I turn mine off.
Misterxtc said:
Under the battery menu press the three dots in the upper right corner and select advanced settings. As for the poll I turn mine off.
Click to expand...
Click to collapse
Just found it thanks.
willhemmens said:
The option is in Device Care > Battery > Settings
Personally I leave fast charge turned on and use a bunch of different chargers with the phone, I just have Battery charge limit set to stop charging at either 80% or 90% (depending on when I think I'll be next able to charge) and try to start changing between 20% and 40%.
Using "bad" or cheap cables is really not the best idea, they often don't meet the USB C spec and could damage your device. Try to stick to high quality but low current chargers (Like old phone chargers) or disable Fast charging as previously mentioned.
Click to expand...
Click to collapse
Thanks finding this option (Samsung UI sux)
Now you're making me ask more questions XD
You have a battery charge limit on an unrooted note 9? How?
Caffeineshock said:
Thanks finding this option (Samsung UI sux)
Now you're making me ask more questions XD
You have a battery charge limit on an unrooted note 9? How?
Click to expand...
Click to collapse
It's rooted. I did come up with a solution using the Automate app and a smart plug a little while back but only worked if you're charging from the charger that's plugged into the smart plug.
Yeah okay this 2 ways are well known
Thanks for the fast reply ^^
I was already questioning my eyesight. You know, Samsung UI and not finding an specific setting in menu could happen even after years I think ^^
I charge when I want, as fast as I want. I leave it on the charger overnight, everynight. Have done it this way for years and will continue to do so. Never seen I'll side effects from doing it this way. I have too much of a life to monitor my charging speed and make sure I'm next to the charger to stop it at 80%. I like waking up to 100% and using it as I see fit through the day. YMMV
Fast charging is set to ON by default straight out of the box. So youll think samsung has taken this to consideration.
Personally, i keep this off when charging with the orginal charger. I have an app called Battery Warner which alerts the user when over a set %. or if rooted it will stop charging and enable charging when it is under a %.
If i have plans to go out and the battery is low then ill throw it on fast charge.
ciaox said:
Fast charging is set to ON by default straight out of the box. So youll think samsung has taken this to consideration.
Click to expand...
Click to collapse
My 2 cents:
I think Samsung doesn't care much if battery will remain healthy after 2 years. They care now to sell as much Notes as possible with the "Fast charging" marketing slogan.
That's why it's ON by default.
I never use fast charging as it will provide more harm than benefits to the battery health + I use a magisk module (Advanced Charging Controller) which have cooling mechanism and voltage monitoring and also battery temperature monitoring and this will also greatly increase the battery life on long term use.... since we got a non replaceable battery
Since I rooted my Note 9 on day 1 (I don't care about warranty) the first thing I did is I used Advanced Charging Controller and keeping my battery healthy for as long as maybe 4~6 years of usage
paul_59 said:
Regarding fast changing killing batteries the charger provides a voltage to the phone, the power management controller monitors battery voltage and temperature , I would assume these have limits and will take control if outside of range in a similar way to throttling cpu frequencies when it gets too hot.
Under battery settings
Click to expand...
Click to collapse
It does, but still the degradation is higher vs no fast charge.
on the topic: The first thing I did on my s7e was to turn off fast charging - the battery after 2.5 years is in a really great shape even after every day charging. The same I did on my note 9. Will use fast charge only if I am in real hurry and need a lot of battery fast. If the phone is changed every 2 year tho, it's not that big of a deal and everyone decides for himself.
Otherwise in most cases it's not needed to charge overnight as 0-100 without fast charging is 2h-2h and 10 minutes. As most charge from ~20%-100% it will take 1:40 to charge the phone. The overnight charge is if the phone is charging from the PC USB - the best way for battery longevity, but not really worth the hassle vs normal charger charging.
According to poll results: more than a half (or 2/3 depending how you will count) uses fast charging.
No, slow on cable and fast charge for wireless!
Photo's by Sully using SM-N960U
The high temperature is an enemy of the li-ion battery. The normal load on the cable drives the temperature to 30.5C. Fast charging on the cable tray at 34.5C. Fast wireless charge up to 37.8C. What better?
Never have and never will use "fast" cable charging. I dont wireless charge either.
Sent from my SM-N960U1 using Tapatalk
Related
do rooted/custom roms enable this or is this a hardware limitation? I understand its a temperature related issue. I am not saying fast charge while using overlclocked cpu and playing games. It just seems a tad annyoing that i cant charge my phone while driving in my car and navigating at the same time. (it will charge but only so very slowly....)
i am talking about the "adaptive fast charge" which really only fats charges when the screen is off or in AOD (always on display)
When you, lets say, have google maps open while driving the "fast charging indication is actually lying to you. It will only draw about 5 Watts there.
sgtpepperaut said:
I understand its a temperature related issue
Click to expand...
Click to collapse
I see someone wants to recreate a newer Note 7. I don't think is is a hardware limitation, of the physical phone or the stock charger, but the (stability of the) battery itself. Playing a game at full brightness would require adaptive fast charging to generate too much heat in the battery itself to compensate for the rapid battery drain, and maxing out the factory charging cable to replenish what was lost during current use and charge the phone in the same quick time you are accustomed to (with the screen off).
You are really asking another Note 7 disaster
Anonymously_Unknown said:
someone wants to recreate a newer Note 7.
Click to expand...
Click to collapse
haha not quite. i think you are confusing some concepts here. The net energy / charge arriving at the battery is actually less when the device would be under full load because the device itself uses a portion of the energy supplied by the charger... or am i missing something?
I think the gpu/cpu/screen heat in combination with charging is what the issue was on the Note 7. The battery itself can, as it might be obvious, easily be charged with ~15w. I believe the smart solution here would be to simply reduce/throttle charging with relation to CPU/battery temp.
I can tell you that when in a holder in an air conditioned car using google maps the battery will be fine with quick charge unless there is some weird coupling between two ICs.
Any decent quality USB cable will not be a limiting factor. 2 Amps @ 5V or 9V is really not a problem/
My measurements with the factory cable and charger at about 85% battery were around 1 Amp @ 5 Volt with screen ON and about 1.67 Amps @ 9Volts with screen Off or AOD on.
anyways. really only wondering if custom ROMS support this is or not. having my phone quick charge in my car while navigating is very important to me.
I think Samsung just played it very very very Safe after the Disaster. Limiting current and battery size that a guy who quick charges his phone in a Sauna can play candycrush on max brightness in performance mode....
sgtpepperaut said:
The net energy / charge arriving at the battery is actually less when the device would be under full load because the device itself uses a portion of the energy supplied by the charger.
Click to expand...
Click to collapse
I agree, I should have made that point clear in the first post.
sgtpepperaut said:
I believe the smart solution here would be to simply reduce/throttle charging with relation to CPU/battery temp
Click to expand...
Click to collapse
Samsung smartly chose to avoid the issue altogether.
Heat dissipation will be that issue to contend with in my opinion. My phone's charger only does 18Watts on a good day (screen-off) in an airconditioned room (measured by a USB multimeter). There needs to be adequate overhead left in the thin stock cable that is shipped with these phones (which isn't even USB 3.0).
I believe that this maybe an safety feature built in by Samsung in the wake of the Note 7 battery issue. There may not be a work around for it.
iceepyon said:
safety feature built in by Samsung in the wake of the Note 7 battery issue
Click to expand...
Click to collapse
You aren't helping the OP's case in trying to re-create another (explosive) Note7. Suggest something nerdy, like creating a custom kernel that tricks the charging circuit into thinking that the screen is off when the the charger is connected.
Limiting the battery charge to a fraction (70%-80%) of it's full capacity is a well known way to greatly extend the battery's charge capacity lifetime. There are several (root) apps created to automate this, that stop the phone from charging once a selected charge level is reached. Battery Charge Limit is one (https://forum.xda-developers.com/android/apps-games/root-battery-charge-limit-t3557002), ACCA is another (https://github.com/MatteCarra/AccA/). So far I have not been successful getting either of those to work with the ROG2. I was wondering if anybody has had any success with those apps or any other way to limit the battery charge on the ROG2?
The Rog phone 2 has its own function that lets you automatically stop charging.
But keep in mind this function is only useful if you are planing to keep the phone connected to a charger 24/7 then it's useful. Otherwise it's worthless if you disconnect your phone once it's 100% charged.
Battery also needs to discharge and recharge to keep it's capacity and function going. If you don't do this it can wear the battery out even if you stop charging at 70-80%.
Jake.S said:
The Rog phone 2 has its own function that lets you automatically stop charging.
But keep in mind this function is only useful if you are planing to keep the phone connected to a charger 24/7 then it's useful. Otherwise it's worthless if you disconnect your phone once it's 100% charged.
Battery also needs to discharge and recharge to keep it's capacity and function going. If you don't do this it can wear the battery out even if you stop charging at 70-80%.
Click to expand...
Click to collapse
Most of what you said is wrong.
The ASUS Power Master Battery Care feature slows and delays the charging but still charges to 100%. The feature is only useful if you have a regular charge schedule (which I don't, and DO mostly leave the phone on the charger) and even then, it's still charging to 100%. Repeatably charging a LiPo battery to 100% WILL decrease it's capacity significantly faster than if only partially charged. All phones already slow charging at high charge levels. There is no advantage to discharging the battery.
Read and learn: https://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
If you can reference any authority to support your position, I'd love to see it.
MyronAz said:
Most of what you said is wrong.
The ASUS Power Master Battery Care feature slows and delays the charging but still charges to 100%. The feature is only useful if you have a regular charge schedule (which I don't, and DO mostly leave the phone on the charger) and even then, it's still charging to 100%. Repeatably charging a LiPo battery to 100% WILL decrease it's capacity significantly faster than if only partially charged. All phones already slow charging at high charge levels. There is no advantage to discharging the battery.
Read and learn: https://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
If you can reference any authority to support your position, I'd love to see it.
Click to expand...
Click to collapse
Did you ever know that even authority can be wrong in facts as well? I can confirm that battery feels alot better with discharge and charge than what it is with 100% all time or 70-80%.
How I can confirm is that I have a Microsoft surface Pro 4 and when I kept it on charger at 100% for a day or two the wear level jumped from 0% to 3% but when I discharged it and recharged it after some time then tear level on battery went back to 0% and capacity was back to its full capacity again. So discharge and recharge does not always wear the battery out. It actually makes battery feel better too.
So please don't always believe what internet and what authority States. Since on internet there is alot of false facts and authority gives alot of nonsense facts alot of times too.
Is it really wise to basically degrade your battery by 20% out of the box just so you can have 95% in 2 years? If anything, heat is the greatest factor for degradation. If you're that worried, just use a 2 Amp charger.
dennis96411 said:
Is it really wise to basically degrade your battery by 20% out of the box just so you can have 95% in 2 years? If anything, heat is the greatest factor for degradation. If you're that worried, just use a 2 Amp charger.
Click to expand...
Click to collapse
Wise? Absolutely. Is it the perfect solution for everyone? No
dennis96411 said:
Is it really wise to basically degrade your battery by 20% out of the box just so you can have 95% in 2 years? If anything, heat is the greatest factor for degradation. If you're that worried, just use a 2 Amp charger.
Click to expand...
Click to collapse
Yes, heat is a factor, but keeping the battery at 100% will degrade the battery faster regardless. If you simply do not need the additional 20% than there is no advantage to charging to 100%. My usage scenario is that the phone is plugged in a lot of the time and I very rarely need the full battery capacity. I've had several phone batteries bloat up under this scenario (and not using any fast charging).
When batteries degrade they don't stop at 80%. They generally keep degrading fairly rapidly. And you don't just lose capacity, as the battery degrades the internal resistance increases, which results in throttling and/or crashing.
BTW on some phones, ACCA will stop charging the battery when it reaches the desired charge level and run the phone entirely from external power.
willhemmens said:
Wise? Absolutely. Is it the perfect solution for everyone? No
Click to expand...
Click to collapse
Agreed. If manufacturers still offered replaceable batteries in their flagships, this would be somewhat of a moot point. When dealing with a sealed battery that is expensive and time consuming to replace, it's wise to do everything reasonable to protect the overall lifespan of it.
As for keeping it charged at 100%, I did that once and killed a battery in about 6 months. Not doing that one again.
Guys, it's so nice you are debating over the battery charging metaphysics but it does not help us solve the issue: our rooted phone can not be charged in a smart way using magisk+acc, ACCA or Battery Charge Limit.
Any ideas?
I'm facing issue with my Rog 2, my phone is not charging fast
1. I'm using 18w charger come with the phone to charge
2. I have used Xiaomi 2i power bank with 18w output to charge my phone (still not working)
3. I restart the phone on charging it goes down 36% to 29%
4. On charging when i restart the phone it goes 8% to 13%
5. I'm facing this problem from the yesterday
6. Double plus sign on battery icon as well as fast charging text on home screen is also not showing while charging
What is the issue please help anyone
Submit a bug report to acca and maybe at least someone starts caring for the ROG Phone. The reason why it doesnt work is simply because ASUS does its own stupid thing while charging (thats what happens when 100 OEMs cook their own soup, a mess).
About the battery health:
A battery keeps its best health when its charged between 25-75%, is kept below 30°C and charged as slow as possible. Thats why its wise to stop charging at 80% with a slow charger, especially when you have a big battery anyway that lasts for a day with 80% charge.
Himan99 said:
I'm facing issue with my Rog 2, my phone is not charging fast
1. I'm using 18w charger come with the phone to charge
2. I have used Xiaomi 2i power bank with 18w output to charge my phone (still not working)
3. I restart the phone on charging it goes down 36% to 29%
4. On charging when i restart the phone it goes 8% to 13%
5. I'm facing this problem from the yesterday
6. Double plus sign on battery icon as well as fast charging text on home screen is also not showing while charging
What is the issue please help anyone
Click to expand...
Click to collapse
currently facing the same issue and this is the first time in 2 week time. though on the lock screen, it shows fast charging.. but it isnt working smh
apollo3x said:
currently facing the same issue and this is the first time in 2 week time. though on the lock screen, it shows fast charging.. but it isnt working smh
Click to expand...
Click to collapse
Change the cable and try also try with different fast charging adapters or fast charging powerbank(mi power bank)
My problem solve by changing the cable
---------- Post added at 03:55 AM ---------- Previous post was at 03:54 AM ----------
MyronAz said:
Limiting the battery charge to a fraction (70%-80%) of it's full capacity is a well known way to greatly extend the battery's charge capacity lifetime. There are several (root) apps created to automate this, that stop the phone from charging once a selected charge level is reached. Battery Charge Limit is one (https://forum.xda-developers.com/android/apps-games/root-battery-charge-limit-t3557002), ACCA is another (https://github.com/MatteCarra/AccA/). So far I have not been successful getting either of those to work with the ROG2. I was wondering if anybody has had any success with those apps or any other way to limit the battery charge on the ROG2?
Click to expand...
Click to collapse
Without root any chances
Because i don't want to root my phone
Himan99 said:
Without root any chances
Because i don't want to root my phone
Click to expand...
Click to collapse
There is no programmatic way to internally control the charging process without root, however there are some (not as good) alternatives.
First there is an app Accubattery that will give you a notification when the battery reaches a given level, you have to then disconnect the charger manually.
A second way to do this would be to use a smart plug and control it with Tasker. Don't know if anyone has done this but it should be possible.
Another possibility that is not vailable yet would be a kickstarter project called BatteryPal. This is a charging cable that had a bluetooth interface built in to it that would control charging using an app on the phone.They arr saying it will be available March 2020, but who knows.
I'm facing the same situation here. I'm next to a charger most of the time, so I like to use slow charging and not going above 80%. I was used to have battery charge limit installed in all my devices, but found this is not working with the rog phone.
My rog Phone 2 global edition over heats while charging
has anyone found a way even with root? I've tried ACC and some other app but they all done work.
I've also just tried ACC and Battery Charge Limit, but neither worked. It looks like there is something that keeps overwriting the charge control file all the time and allows the battery to charge anyway. Battery Care was disabled while doing this.
I am rooted, so I am able to test any potential solution.
Someone posted on r/rogphone2 a solution for this:
https://www.reddit.com/r/ROGphone2/comments/ev0put/hows_this_it_never_reaches_100/
I've just tested it and it works for me.
Does anyone know of a legit charging adapter that isnt fastcharge and doesnt damage the phone or gets damaged itself after a while? I want to charge my phone without fastcharge but cant find a good charger
My old htc m8 charger got damaged after just a few times of using! Seems like the phone drained it dry
Hi there,
to be honest, I have posted that question already in the P30 forum. But as both devices are quite similar and the Pro has a wider reach I decided to repeat it here. I hope you don't mind...
With the new EMUI10.1 also the "Smart Charge" feature arrived. Well, here at my P30 as a switch at least. I am really not sure, if this is working at all. I have it activated since idk 5 weeks or so and am using the original cable and charger. The charging curve, as can be seen in the battery settings, is not displaying any slower or even paused charging speed, the curve goes straight up until 100% ~1h after plugging in. Also there is nothing indicating an activated smart charging right when I plug in the charger.
What is your experience here, can you guys see any difference, have you seen any proof this is working?
Many thanks.
Yes, I've noticed it on both of my Huawei phones. It basically slows down or even stops charging so it doesnt max out, in order to preserve battery life. So you can leave it on the charger forever but it'll never hit 100%. My P30 pro sits on the charger almost daily and sits around 80-90%.
Maybe it has an algorithm that knows when you dont use it and charges to max then? My phone is on a wireless charger about 95% of the time throughout the day and night because it isnt used often. Sometimes it'll popup telling me that its using the smart charge feature and if I want to disable it blah blah.
adamlee2012 said:
I wake up every morning and mines on 100%. Looking at the battery graph it goes straight to 100% doesn't stop at 80 and charge nearer the time I unplug it so not quite sure how they've implemented it. Sony pauses charging til the usual time you unplug. Maybe when it reaches 100 on Huawei it stops charging.
Click to expand...
Click to collapse
That matches my experience. Also the Sony part.
Hi guys, I noticed that even if the smart charge is on and I always charge at 80% max, if I forget to unplug it it goes up to 100%. SO I suppose it is not working... What is your experience about it?
adamlee2012 said:
I think it charges to 100% then stops charging... And keeps it at 100%... I charge my phone every night... I never see it pause charging at 80% looking at the charging graph.
Click to expand...
Click to collapse
Thank you for your feedback! So it is not working as it should. I got it should "understand" your habits and charge it accordingly, never going over 80%.
It's a pity, I found it really useful, but if it works like this it is useless.
beggar23 said:
Hi there,
to be honest, I have posted that question already in the P30 forum. But as both devices are quite similar and the Pro has a wider reach I decided to repeat it here. I hope you don't mind...
With the new EMUI10.1 also the "Smart Charge" feature arrived. Well, here at my P30 as a switch at least. I am really not sure, if this is working at all. I have it activated since idk 5 weeks or so and am using the original cable and charger. The charging curve, as can be seen in the battery settings, is not displaying any slower or even paused charging speed, the curve goes straight up until 100% ~1h after plugging in. Also there is nothing indicating an activated smart charging right when I plug in the charger.
What is your experience here, can you guys see any difference, have you seen any proof this is working?
Many thanks.
Click to expand...
Click to collapse
According to the official, smartphones powered by lithium batteries ages differently, which results vary in terms of charging or simply called slow charging as well as short battery life.
For example, if a user leaves the charging overnight or for a long time. The charger keeps supplying the power to the battery, a state called overcharging. Repeating this process causes battery aging.
But with accurate management, the battery aging can be slow down and extend the battery life.
This is where Smart Charging Mode comes in place and uses the phone’s built-in AI capabilities to learn usage patterns. To slow down the battery to charge 100% when required.
For example, if the smart charging mode is enabled and the battery reaches 80%. The charging automatically slowdowns (charging rate) before it reaches 100%. This whole process prevents the phone to keep charging at 100 percent without harming the batter
P20pro here, same problem. Night or day, it seems to charge at the same rate, not waiting at 80%, no sign of that toggle doing anything.
skodann said:
According to the official, smartphones powered by lithium batteries ages differently, which results vary in terms of charging or simply called slow charging as well as short battery life.
For example, if a user leaves the charging overnight or for a long time. The charger keeps supplying the power to the battery, a state called overcharging. Repeating this process causes battery aging.
But with accurate management, the battery aging can be slow down and extend the battery life.
This is where Smart Charging Mode comes in place and uses the phone’s built-in AI capabilities to learn usage patterns. To slow down the battery to charge 100% when required.
For example, if the smart charging mode is enabled and the battery reaches 80%. The charging automatically slowdowns (charging rate) before it reaches 100%. This whole process prevents the phone to keep charging at 100 percent without harming the batter
Click to expand...
Click to collapse
I still cannot see any slowdown in charging here. How about you?
Sent from my [device_name] using XDA-Developers Legacy app
None... Charges as usual over night. Goes to 100% in about 1 hour and stays there
So basically it charges up to 80% in regular mode, after it starts to charge or very slowly or just before u wake up to 100%.. Yes, is learning at what time usually u touch for the first time the phone..
Or at least, this is what should do
Sent from my VOG-L09 using Tapatalk
duff91 said:
So basically it charges up to 80% in regular mode, after it starts to charge or very slowly or just before u wake up to 100%.. Yes, is learning at what time usually u touch for the first time the phone..
Or at least, this is what should do
Sent from my VOG-L09 using Tapatalk
Click to expand...
Click to collapse
Exactly, "should do". Instead the phone is charging quickly and straight to 100% without any slowdown.
Sent from my [device_name] using XDA-Developers Legacy app
Ive purchased a Galaxy S20FE (Exynos) version 4days ago. I also purchased a 25W Samsung fast charger. I am getting slow charging speeds. When mobile was on and idle it took 2hrs 10 min to fully charge. (My mobile data and GPS was off). When mobile was off it took 1hr10min to go from 20 percent to 100 percent. Can anyone tell what's the problem?
I am from Delhi. I use two sim cards. I have not rooted or installed any big games.
Ashutosh7x said:
Ive purchased a Galaxy S20FE (Exynos) version 4days ago. I also purchased a 25W Samsung fast charger. I am getting slow charging speeds. When mobile was on and idle it took 2hrs 10 min to fully charge. (My mobile data and GPS was off). When mobile was off it took 1hr10min to go from 20 percent to 100 percent. Can anyone tell what's the problem?
I am from Delhi. I use two sim cards. I have not rooted or installed any big games.
Click to expand...
Click to collapse
There is a fast charging option you need to enable in the settings.
Bala0009 said:
There is a fast charging option you need to enable in the settings.
Click to expand...
Click to collapse
Yes, it was enabled.
install Ampere and check your mA during charging. I get roughly 1700 to 1800mA on the standard charger with fast charging turn off.
Ashutosh7x said:
When mobile was off it took 1hr10min to go from 20 percent to 100 percent.
Click to expand...
Click to collapse
Just for comparison: When my S20 FE 5G is on it took 1h17m to charge from 20 to 100% using bundled 15W charger and cable.
3mel said:
install Ampere and check your mA during charging. I get roughly 1700 to 1800mA on the standard charger.
Click to expand...
Click to collapse
Thank you for advice. I checked mine and found that:
15W charger gives constant 1500-1600mA
25W charger gives max current of 3700mA for a few minutes and then drops down to 1800mA or even 1000mA.
Is it faulty?
Ashutosh7x said:
Thank you for advice. I checked mine and found that:
15W charger gives constant 1500-1600mA
25W charger gives max current of 3700mA for a few minutes and then drops down to 1800mA or even 1000mA.
Is it faulty?
Click to expand...
Click to collapse
It's dropping out of fast charging.
Excessive low or high battery temperature.
Between 40-65% it should charge at about 2% @minute if temp is above 60F and below 100F.
At about 80% it should drop out of fast charging to protect the battery.
You need an approved fast charger brick (minimum 25w) and cable. Make sure cable plug is fully inserted into the brick.
A failing battery will cause erratic fast charging; replace battery if any signs of case swelling are present! Check for this... been there, done that
What make and model of
Ashutosh7x said:
Ive purchased a Galaxy S20FE (Exynos) version 4days ago. I also purchased a 25W Samsung fast charger.
Click to expand...
Click to collapse
Is it defiantly a genuine Samsung changer..?
Ashutosh7x said:
Thank you for advice. I checked mine and found that:
15W charger gives constant 1500-1600mA
25W charger gives max current of 3700mA for a few minutes and then drops down to 1800mA or even 1000mA.
Is it faulty?
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Click to collapse
settings / battery and device care / battery / more battery settings / fast charge...
is it enabled there ?
3mel said:
settings / battery and device care / battery / more battery settings / fast charge...
is it enabled there ?
Click to expand...
Click to collapse
It wouldn't have fast charged at all if not enabled; 3500ma draw indicates it is enabled.
You can try toggling that toogle 3 times on/off while not charging. Sometimes this helps.
Try a known good (new) Samsung 25 w brick and cable.
Clear system cache.
Try a hard reboot (simulates pulling battery)
Make sure the C port contacts are clean.
A factory reset will most likely do nothing except waste your time.
If none of the above suggestions work it's a strong possibility you have a bad C port charging pcb or... a failing battery.
Any case swelling means replace the battery asap☠
A nominal fast charge profile; Note 10+ with a new battery on a Samsung 25 watt brick.
Starting battery temp was 70°F
Start 48% 4895 ma
65% 4100 ma
70% 3700 ma
The current draw can fluctuate as the charge increases depending on various parameters like temperature. Generally the draw is stronger at deeper discharge levels then tapers off as it approaches a 80% charge state. At 90% or so it will be around 800ma. At 100% the draw is 0ma.
I was thinking the phone and charger have to communicate for the charger to know the phones preference of current draw, the 3700mA dropping down could indicate that setting being received and adjusted to.
3mel said:
I was thinking the phone and charger have to communicate for the charger to know the phones preference of current draw, the 3700mA dropping down could indicate that setting being received and adjusted to.
Click to expand...
Click to collapse
With a 3700 ma draw fast charging is engaged.
Erratic fast charging is a strong indicator of a battery failure especially if it's capacity has noticeably decreased.
I watched this type of behavior for about 2 months. It started suddenly.
I was fortunate the swelling battery didn't damage my display or worse. It sits right against the display and it's thousands of mosfets and OLEDs. That matrix is delicate...
blackhawk said:
It wouldn't have fast charged at all if not enabled; 3500ma draw indicates it is enabled.
You can try toggling that toogle 3 times on/off while not charging. Sometimes this helps.
Try a known good (new) Samsung 25 w brick and cable.
Clear system cache.
Try a hard reboot (simulates pulling battery)
Make sure the C port contacts are clean.
A factory reset will most likely do nothing except waste your time.
If none of the above suggestions work it's a strong possibility you have a bad C port charging pcb or... a failing battery.
Any case swelling means replace the battery asap☠
A nominal fast charge profile; Note 10+ with a new battery on a Samsung 25 watt brick.
Starting battery temp was 70°F
Start 48% 4895 ma
65% 4100 ma
70% 3700 ma
The current draw can fluctuate as the charge increases depending on various parameters like temperature. Generally the draw is stronger at deeper discharge levels then tapers off as it approaches a 80% charge state. At 90% or so it will be around 800ma. At 100% the draw is 0ma.
Click to expand...
Click to collapse
Hey, thank you for telling all this. I am planning to go to service center.
blackhawk said:
With a 3700 ma draw fast charging is engaged.
Erratic fast charging is a strong indicator of a battery failure especially if it's capacity has noticeably decreased.
I watched this type of behavior for about 2 months. It started suddenly.
I was fortunate the swelling battery didn't damage my display or worse. It sits right against the display and it's thousands of mosfets and OLEDs. That matrix is delicate...
Click to expand...
Click to collapse
My device is 20 days old. It's battery capacity is 4370mAh (It should be 4500mAh). I am confused if battery is faulty or charger. Can you tell any app to check if battery is faulty?
your battery capacity is the exact same as mine.
Ashutosh7x said:
My device is 20 days old. It's battery capacity is 4370mAh (It should be 4500mAh). I am confused if battery is faulty or charger. Can you tell any app to check if battery is faulty?
Click to expand...
Click to collapse
If you're using the Samsung fast charging brick/cable return the phone now if you still can.
No reason to deal with a factory defect with a new phone. Better safe than pi$$ed
That reported battery capacity is within normal parameters for a new battery.
No app can tell if the battery is failing other than poor capacity. Any rear panel or display bulging is a dead giveaway sign of battery failure.
Note, what Android reports as battery capacity can't be trusted It's dumb as rain.
Ashutosh7x said:
My device is 20 days old. It's battery capacity is 4370mAh (It should be 4500mAh). I am confused if battery is faulty or charger. Can you tell any app to check if battery is faulty?
Click to expand...
Click to collapse
it could be either the phone or the charger that has a problem, it's possible that it is more the 25watt charger if the 15 watt charger works as intended. I'd get both looked at, you want to be sure after the money you've spent.
I have baught this 25W Charger for my s20 fe. But, whenever I try to charge with this after several minutes of charging charger gets disconnected and reconnects within seconds itself and it continues. There is no such issue with original 15W charger. My phone is rooted & custom recovery installed.
Is it software issue or hardware issue? Any idea?
Thanks in advance.
Riaz_Uddin said:
I have baught this 25W Charger for my s20 fe. But, whenever I try to charge with this after several minutes of charging charger gets disconnected and reconnects within seconds itself and it continues. There is no such issue with original 15W charger. My phone is rooted & custom recovery installed.
Is it software issue or hardware issue? Any idea?
Thanks in advance.
Click to expand...
Click to collapse
Not sure about that device but always start by using the OEM fast charger and cable.
Replace OEM charger/cable with same if not fast charging only -then- look for other causes.
A defective battery will also cause erratic fast charging. Any signs of case bulging indicates a battery failure and needs to be addressed asap.
A recently learned this lesson
Fortunately it didn't damage my display. The battery sits right on top of the AMOLED displays (with its thousands of mosfets and delicate matrixs) in most phones.
I'm currently on Android 11, june patch. Just got the phone this week and noticed something very frustrating. I can generally "fast charging" as i only have a 15w charger for now. But sometimes if I unplug it and plug it back in, it just says "cable charging" i have other chargers and it's the same.. sometimes it says fast charging, but i downloaded Ampere and can see it only at 300mah and only goes up very slowly.. 1% every 4mins..
Anyone else with these issues?
Just try using the official charger and cable because everything else would be way dangerous. The same thing you have mentioned is happening to me as well. Try changing the way cable is plugged in. Turn it upside down.
Im using the 25w charger, Samsung original and neve chared with the stock 15w charger. It shows super fast charging, no problems here.
kevinwu128 said:
I'm currently on Android 11, june patch. Just got the phone this week and noticed something very frustrating. I can generally "fast charging" as i only have a 15w charger for now. But sometimes if I unplug it and plug it back in, it just says "cable charging" i have other chargers and it's the same.. sometimes it says fast charging, but i downloaded Ampere and can see it only at 300mah and only goes up very slowly.. 1% every 4mins..
Anyone else with these issues?
Click to expand...
Click to collapse
yeah def charge with Samsung OEM charger
Meh, fast charging only will engage with 25 watt brick that is compatible.
$15 for a Samsung 25wbrick/cable at Walmart online, what's not to like?
I have 2 sets, the first one is over 1.5 years old and still runs A-OK.
jeeeesze...
Yeah i plan to get the 25w charger, just waiting on delivery. I'm just trying to reduce buying so many as i have so many spares from old phone that charge in just over an hour SOMETIMES And over 3 hour at other times! Frustration is even if i unplug and plug it back it, it never seems to go to fast charging unless i let it discharge a little. Winter here and it's cold so temperature of battery has been fine.
kevinwu128 said:
Yeah i plan to get the 25w charger, just waiting on delivery. I'm just trying to reduce buying so many as i have so many spares from old phone that charge in just over an hour SOMETIMES And over 3 hour at other times! Frustration is even if i unplug and plug it back it, it never seems to go to fast charging unless i let it discharge a little. Winter here and it's cold so temperature of battery has been fine.
Click to expand...
Click to collapse
Temperature matters. Charging is an electrochemical reaction. Too low a temperature and fast charging will not engage. Charging below 72-82F can cause Li plating to form which will permanently degrade the cell.
Never attempt to charge a Li at 40F or less!
Best battery start temperature is 85-95F
Li's fast charge best in the 90's.
Below 60F fast charging may not engage and it will slow charge for the remaining cycle.
Fast charging will disengage around 80% and at 90% will slow even more. This is to protect the battery.
If the battery temp get above about 101F fast charging will disengage. At around 104F it will stop charging all together.
Cool battery as it approaches 99F with a fan and/or damp microfiber cloth.
At ambient temperatures above 90F cooling will likely be needed for fast charging.
blackhawk said:
Temperature matters. Charging is an electrochemical reaction. Too low a temperature and fast charging will not engage. Charging below 72-82F can cause Li plating to form which will permanently degrade the cell.
Never attempt to charge a Li at 40F or less!
Best battery start temperature is 85-95F
Li's fast charge best in the 90's.
Below 60F fast charging may not engage and it will slow charge for the remaining cycle.
Fast charging will disengage around 80% and at 90% will slow even more. This is to protect the battery.
If the battery temp get above about 101F fast charging will disengage. At around 104F it will stop charging all together.
Cool battery as it approaches 99F with a fan and/or damp microfiber cloth.
At ambient temperatures above 90F cooling will likely be needed for fast charging.
Click to expand...
Click to collapse
I don't really work with Fareinheit, but after looking, battery is reporting it as around 29degrees when charging. It does seem to be more consistent the last 2 days, i wonder if it's because the OS was still trying to learn my usage. It still happens, i just need to unplug and plug it back in when it says slow/cable charging. But haven't tested it too much, so still unsure.
I am still waiting on charger, i'll keep this forum updated in case anyone else is interested.
kevinwu128 said:
I don't really work with Fareinheit, but after looking, battery is reporting it as around 29degrees when charging. It does seem to be more consistent the last 2 days, i wonder if it's because the OS was still trying to learn my usage. It still happens, i just need to unplug and plug it back in when it says slow/cable charging. But haven't tested it too much, so still unsure.
I am still waiting on charger, i'll keep this forum updated in case anyone else is interested.
Click to expand...
Click to collapse
Meh you do the conversion. For actual living the Celsius system is awkward at best.
blackhawk said:
Meh you do the conversion. For actual living the Celsius system is awkward at best.
Click to expand...
Click to collapse
Lol, i did. Temperature was fine.
I received my charger after i typed up message. I used it with super fast charging getting 3000mA from ampere app. Worked great unplugging and plugging it back in.
Tested using it on my s10 charger, and it showed up as fast charging, unplug, plugged it back in, cable charging only.
Went back to the 25w charger. It says super fast charging but hovers aroud 1000mA.
Can't get it to use high speed. Temperature at 28.5 degrees.
The only way for me, let it drain 10% and put it in the charger again to get 3000mA charging speed. The message that says "super fast charging" means nothing to be honest.
kevinwu128 said:
Lol, i did. Temperature was fine.
I received my charger after i typed up message. I used it with super fast charging getting 3000mA from ampere app. Worked great unplugging and plugging it back in.
Tested using it on my s10 charger, and it showed up as fast charging, unplug, plugged it back in, cable charging only.
Went back to the 25w charger. It says super fast charging but hovers aroud 1000mA.
Can't get it to use high speed. Temperature at 28.5 degrees.
The only way for me, let it drain 10% and put it in the charger again to get 3000mA charging speed. The message that says "super fast charging" means nothing to be honest.
Click to expand...
Click to collapse
In what battery % range are you charging? It should draw closer to 4000-5000 ma at its peak fast charge rate with a 25w brick.
About 2%@minute when fast charging at peak rate.
Erratic fast charging can indicate a battery failure.
Any swelling is a failure. Replace immediately it this happens.
Other signs are deminished battery capacity.
Try clearing system cache.
Toggle the fast charging switch on/off 3 times.
Discharge until phone shuts down then charge to 100%. Some say to do this 3 times but one cycle worked for me to recalibrate the battery gauge.
Fast charging is a little b*tch when it goes south but always suspect a battery failure if this happens. A swollen battery can damage and destroy the phone.
Battery failures can happen at any time but are more likely to happen with degraded Li's.
blackhawk said:
In what battery % range are you charging? It should draw closer to 4000-5000 ma at its peak fast charge rate with a 25w brick.
About 2%@minute when fast charging at peak rate.
Erratic fast charging can indicate a battery failure.
Any swelling is a failure. Replace immediately it this happens.
Other signs are deminished battery capacity.
Try clearing system cache.
Toggle the fast charging switch on/off 3 times.
Discharge until phone shuts down then charge to 100%. Some say to do this 3 times but one cycle worked for me to recalibrate the battery gauge.
Fast charging is a little b*tch when it goes south but always suspect a battery failure if this happens. A swollen battery can damage and destroy the phone.
Battery failures can happen at any time but are more likely to happen with degraded Li's.
Click to expand...
Click to collapse
Thanks for the response, with the testing i've done, it's been 70% to 100% only.
i've been needing my phone for work, so i haven't had a chance to discharge it. Will try it this weekend.
Do you charge it back to 100% after a complete discharge with the phone Off or On?
kevinwu128 said:
Thanks for the response, with the testing i've done, it's been 70% to 100% only.
i've been needing my phone for work, so i haven't had a chance to discharge it. Will try it this weekend.
Do you charge it back to 100% after a complete discharge with the phone Off or On?
Click to expand...
Click to collapse
At 70-100% you'll see much slower charging.
Li's prefer frequent midrange power cycling. It can extend their life by hundreds of full charge cycles. Example 40-70%
I rarely charge to 90-100% usually to 65-82%
I almost discharge below 30%, 40% or so being typical. Below 20% there's not a lot of usable energy. It also stresses the battery more when charging from a deep discharge state.
If you insist on charging to 100% at night at least slow charge it to reduce battery strain.
blackhawk said:
At 70-100% you'll see much slower charging.
Li's prefer frequent midrange power cycling. It can extend their life by hundreds of full charge cycles. Example 40-70%
I rarely charge to 90-100% usually to 65-82%
I almost discharge below 30%, 40% or so being typical. Below 20% there's not a lot of usable energy. It also stresses the battery more when charging from a deep discharge state.
If you insist on charging to 100% at night at least slow charge it to reduce battery strain.
Click to expand...
Click to collapse
i drained it to 0% until it turned off.
After turning back on, i plugged in the 25w charger and it started charging at 4000mA and max 4750 for only a few seconds for the first 10% and after that, it went down and stayed around 3000-3500mA. happy for that for now. So thanks for your input.
Basically, to get fast charging/super fast charging, don't unplug and plug in a few times unless you have to as it will revert to cable charging, and then you'll need to let it drain a little bit (i found, around 10mins ) before plugging it in again to get the fast speeds.
kevinwu128 said:
i drained it to 0% until it turned off.
After turning back on, i plugged in the 25w charger and it started charging at 4000mA and max 4750 for only a few seconds for the first 10% and after that, it went down and stayed around 3000-3500mA. happy for that for now. So thanks for your input.
Basically, to get fast charging/super fast charging, don't unplug and plug in a few times unless you have to as it will revert to cable charging, and then you'll need to let it drain a little bit (i found, around 10mins ) before plugging it in again to get the fast speeds.
Click to expand...
Click to collapse
Having the display on skews the charge curve, don't. It will charge slowly or not all if the display is on.
It you turn the display with it the battery page already open you have one or two seconds to see the display off mAh charging rate.
You can easily tell it's fast charging by watching how fast the battery percentage changes with the screen off.
1%@minute or less slow charging
2%@minute fast charging is active
Fast charging will ramp down depending on inputs like temperature and charge percentage the power controller recieves.
If it starts or goes under/over temperature fast charging will disengage for that charge cycle.
It also will ramp up/down sometimes throughout the below 80% range. This is normal.
Being in the optimum battery temperature range at the start and throughout the charge cycle is important but don't go too nuts. Higher is better than lower. Once the battery is below 70°F it will not fast charge as well (or at all) and/or can detrimental to the battery ie Li plating. There maybe other parameters the controller uses as well... not sure.
Oddly the Samsung 25w bricks are very tolerant of low input voltage. They will charge with as little as 60 VAC!
Like a few have said, fast charging like that will degrade your battery faster due to high temps, but the way you use it has a big impact on that. If you fast charge at those speeds to 100% take it off and use it constant until dead, and put it back on the charger then you will deff degrade it faster. Lithium cells need to rest between charge and discharge to let the the temperature settle. If not it's taking a hugh work load wearing down the internal resistance which drops the cells Mah rating.
Yeah, Im guilty of this too many times lol
Manufacturers know this as well but they know people want fast charging and largest battery capacity possible, they could at least make an option to lower the voltage down from 4.20v and a charger allowing us to switch between a few milliamp ratings..
BandSkipper said:
Like a few have said, fast charging like that will degrade your battery faster due to high temps, but the way you use it has a big impact on that. If you fast charge at those speeds to 100% take it off and use it constant until dead, and put it back on the charger then you will deff degrade it faster. Lithium cells need to rest between charge and discharge to let the the temperature settle. If not it's taking a hugh work load wearing down the internal resistance which drops the cells Mah rating.
Yeah, Im guilty of this too many times lol
Manufacturers know this as well but they know people want fast charging and largest battery capacity possible, they could at least make an option to lower the voltage down from 4.20v and a charger allowing us to switch between a few milliamp ratings..
Click to expand...
Click to collapse
You're correct it's best to allow some rest after charging and to not fast charge.
In practice this goes out the window
I do try to keep the voltage down as well as the temperature below 100F. Ambient temperatures here are frequently in the 90's
If I get a year out of this new battery I'm good with that.
However once it's down to 80% of its original capacity it gets replaced to avoid a failure. That's what happened to the original battery and I was lucky it didn't damage the display.
Below is my typical usage and the 10+'s fast charging patterns. The last charge ended with a near ideal battery charging temp of 94F. It fast charged nearly the whole time.
blackhawk said:
You're correct it's best to allow some rest after charging and to not fast charge.
In practice this goes out the window
I do try to keep the voltage down as well as the temperature below 100F. Ambient temperatures here are frequently in the 90's
If I get a year out of this new battery I'm good with that.
However once it's down to 80% of its original capacity it gets replaced to avoid a failure. That's what happened to the original battery and I was lucky it didn't damage the display.
Below is my typical usage and the 10+'s fast charging patterns. The last charge ended with a near ideal battery charging temp of 94F. It fast charged nearly the whole time.
Click to expand...
Click to collapse
wow that's intense! Battery nerd (in a good way!) I downloaded the app and i've deleted it, i'll just leave it the way i have it for now haha
blackhawk said:
You're correct it's best to allow some rest after charging and to not fast charge.
In practice this goes out the window
I do try to keep the voltage down as well as the temperature below 100F. Ambient temperatures here are frequently in the 90's
If I get a year out of this new battery I'm good with that.
However once it's down to 80% of its original capacity it gets replaced to avoid a failure. That's what happened to the original battery and I was lucky it didn't damage the display.
Below is my typical usage and the 10+'s fast charging patterns. The last charge ended with a near ideal battery charging temp of 94F. It fast charged nearly the whole time.
Click to expand...
Click to collapse
Jeez, had that app for a long time until about a year ago... I use AccA on a Rooted Pixel but id say I started using it a bit late.. You know none of this would be an issue if they still used replaceable damn batteries!! Lol My old Bar & Flip phones before color screens lasted days to over a week, and still had spare battery near by... My Startac even had a Solar panel battery
BandSkipper said:
Jeez, had that app for a long time until about a year ago... I use AccA on a Rooted Pixel but id say I started using it a bit late.. You know none of this would be an issue if they still used replaceable damn batteries!! Lol My old Bar & Flip phones before color screens lasted days to over a week, and still had spare battery near by... My Startac even had a Solar panel battery
Click to expand...
Click to collapse
Yeah I have a flip top and S4, takes about 30 seconds to change the batteries. Most of the newer Samsung's aren't that bad to change out the battery once you know a few tricks. Some phones with multiple batteries are bloody nightmares though.
Solar panel? That's pretty funny
One way to limit phone usage.