Hi
I have Samsung Galaxy S Plus and I'm looking for the following information:
1. Does the phone drain power from batter when it is charging it?
2. Does the phone drain power from the batter AFTER it's 100% charged, and is still connected to the charger/USB?
cheers
Lucas
1. yes, you can drain your battery while it is charging if the charger is weak and your phone is under heavy usage
2. yes, because to improve battery life, the charger will let the battery go from 100 to 9X something, then begin charging again. (Same for laptops)
Hi Dark3n and thanks for your response.
Dark3n said:
1. yes, you can drain your battery while it is charging if the charger is weak and your phone is under heavy usage
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Click to collapse
What do you mean "charger is weak"?
2. yes, because to improve battery life, the charger will let the battery go from 100 to 9X something, then begin charging again. (Same for laptops)
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?? Are you positive about this?
I mean, improving the battery life is charging it to 100%, and then not draining power from it, if it has an option to drain power from outside source.
ps. I have Dell Inspiron 6400, and it does not drain power from battery when fully charged and still connected to the AC outlet.
cheers
lukair1983 said:
Hi Dark3n and thanks for your response.
What do you mean "charger is weak"?
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A good charger will offer something about 500mA+ of current, a weak one less.
If the current of the charger is not higher than what the phone currently drains, the battery will not becharged.
lukair1983 said:
?? Are you positive about this?
I mean, improving the battery life is charging it to 100%, and then not draining power from it, if it has an option to drain power from outside source.
ps. I have Dell Inspiron 6400, and it does not drain power from battery when fully charged and still connected to the AC outlet.
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Click to collapse
I'm not 100% sure, but fairly sure.
Also improving battery life would be to never charge till 100%.
Interesting article:
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Dark3n said:
I'm not 100% sure, but fairly sure.
Also improving battery life would be to never charge till 100%.
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Click to collapse
I see. But if that was the case wouldn't Samsung doing the worst thing possible to the battery inside it's own phones?
Try to follow the logic(if the phone was constantly draining the power from the battery):
The phone is charging. It reaches 100% (so according to your article it's not good), then once it reaches, it can't go beyond that, but since the phone is taking power from the battery, the batter instantly goes below 100%, but then the charger tries to charge it back to 100%. So it's not only charging it to 100%, but it's doing it CONSTANTLY as long as the charger is connected to the phone.
If either of those information was true, Samsung would just conciously damage it's own product.
...
I contacted the Samsung Live Chat just now, and samsung employee told me this:
"P.: The phone takes power from the charger/USB when charging."
"P.: Yes, I am sure. All the phones takes power from charger/USB while charging."
"P.: Yes, you are right. The phone does not drain power if it is still connected to charger."
Any answer to that guys?
Related
Hello everybody, I own an HD2 that is alway connected to a table cradle (connected via USB to a PC) during the day when I'm in Office. I wonder if exist an app that allows to manage the battery charging: I explain...I'd like that the HD2 AUTOMATICALLY "turns off" the charging when the battery is fully charged at 100% and automatically "turns it on" again when the battery charge reaches a given threshold (60-50-40% or something like that). If you own an IBM/Lenovo Laptop I'd like something like the power managment app. Of course the data syncronization HAVE ALWAYS TO STAY TURNED ON regardless the chargin of the battery.
Does it exist somehing like that?
Thanks and regard
Andrea
There is a setting that allows for the battery not to recharge when connected to a PC. Other than that, I completely fail to see what would be the purpose of what you are asking.
pedmond said:
There is a setting that allows for the battery not to recharge when connected to a PC. Other than that, I completely fail to see what would be the purpose of what you are asking.
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thanks for your answer! I already know the setting you're talking about, but as I told early I'd like something that manages this setting automatically. The purpose is to avoid the decreasing of the battery lifetime caused by letting the battery itself "always" connected to a charging source. For example in the Laptop PCs it's better to unplug the battery when the laptop is conncted to an external power source/charging unit...
Thanks
Andrea
the dragonlord said:
thanks for your answer! I already know the setting you're talking about, but as I told early I'd like something that manages this setting automatically. The purpose is to avoid the decreasing of the battery lifetime caused by letting the battery itself "always" connected to a charging source. For example in the Laptop PCs it's better to unplug the battery when the laptop is conncted to an external power source/charging unit...
Thanks
Andrea
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Click to collapse
Most modern devices (and, I believe the HD2) actually disconnect charging when the battery is at 100%. The green light doesn't mean that your HD2 is still charging, but that it's at 100%. Therefore I don't believe you actually shorten the battery life by keeping it plugged in.
pedmond said:
Most modern devices (and, I believe the HD2) actually disconnect charging when the battery is at 100%.
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Click to collapse
I did believe it too but I have an app wich monitors the battery temperature and still when the battery charge is 100% its temperature remains "high" (35 grades degrees) as long as I keep the device plugged to the cradle. I see the same temperature value when the battery is actually charging...this fact have made me change my mind about the fact that the HD2 disconnect charghing when 100% is reached...
Its not the battery which is getting hot, it's the phone.
If I had a lithium-poly/ion battery that was reaching 35C I'd be very worried!
If your app is showing the battery at 35C, turn the phone off, remove the battery and it should be cool to the touch.
If it's hot then you have a problem.
xaccers said:
Its not the battery which is getting hot, it's the phone.
If I had a lithium-poly/ion battery that was reaching 35C I'd be very worried!
If your app is showing the battery at 35C, turn the phone off, remove the battery and it should be cool to the touch.
If it's hot then you have a problem.
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you're right, it's the device, not the battery....I'll throw away the temp app!!!
the dragonlord said:
you're right, it's the device, not the battery....I'll throw away the temp app!!!
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Click to collapse
Heat will decrease the life expectancy of the battery, but so will deep charging rather than top ups, remember with non-NiCd batteries you don't get memory effect, so the only reason to do a deep charge is to recalibrate the software battery meter.
Of course leaving the battery sitting on a shelf will also degrade it's capacity, they start to degrade as soon as they're produced, so buying a spare and not using it until your original battery dies is not a good idea, better to buy a replacement battery when the original starts failing.
HTC's batteries actually seem very reasonably priced too which is refreshing.
My Fuze doesn't charge when connected to charger or connected to sync cable, I notice that when i connect to the charger and leave for a while the battery percentage remains the same, if i reset the phone the battery level will show a higher percentage, number would decrease but never would it increase when charger is plugged, to see the increased figure i have to reset the phone. For example, if my battery power is 1% and i plug the charger to the phone, it will remain at 1% the battery icon wont even come on, nor does the LED indicator, If i reset the phone then i would see say 20%, if i reset right away then it would show eaither a higher figer like 37% or a lower figure like 11%. I really dont whats wrong.
If we leave the battery display.
Could you confirm whether your battery is getting charged or not. I mean charger or connector is working.
How old is your battery? Could it have been over discharged?
mailforkrishna said:
If we leave the battery display.
Could you confirm whether your battery is getting charged or not. I mean charger or connector is working.
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Yes the battery is getting charge, it just doesn't show the percentage increase nor does it show the fork like icon when the charger is connected, and its doesnt sync. However The battery does get charge.
e334 said:
How old is your battery? Could it have been over discharged?
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I have two batteries, one that i normally use, which is abt a year old. the other that i charge as a spare and carry with me every once in a while is abt 6 months old, and the i have tried them both,i get the same results.
I have gone through about 3 cycles if battery, with fast charging turned on. Battery life has not been good, especially with screen off drain. Getting about 3hrs SOT while I've heard people say theu get around 6.
So my question is how many cycles should I go through before I judge battery? And should I disable fast charging? Does fast charging damage the battery?
I have the verizon US variant, so there isn't much I can do to improve battery life without root...
Thanks
Turn fast charge off. Turn off AOD. I have an AT&T model. Helped my battery immensely....
I can go the entire day, 6am to 11pm, with average usage and have about 40% battery left. VR drains my battery like butter on a stove.
gleggie said:
I have gone through about 3 cycles if battery, with fast charging turned on. Battery life has not been good, especially with screen off drain. Getting about 3hrs SOT while I've heard people say theu get around 6.
So my question is how many cycles should I go through before I judge battery? And should I disable fast charging? Does fast charging damage the battery?
I have the verizon US variant, so there isn't much I can do to improve battery life without root...
Thanks
Click to expand...
Click to collapse
I'm also on VZW and I've had my S7 for a week. After about 3 days of poor battery life (~2hrs SOT), I turned AOD, location, BT, and NFC off, and disabled a bunch of bloatware (I posted what I did in the battery thread). That improved my SOT to over 4 hours +more standby time. I've since re-enabled BT and location and haven't noticed a difference. I left fast charge on but I use a slow charger at night, just because that's what's plugged up behind my bed.
Sorry, I don't have a source but I'm pretty sure I read something credible that said fast charging doesn't affect battery life/quality. I know that's pretty flaky, so take if with a grain of salt because plenty of other people are saying it helps.
TehPirate_ said:
I can go the entire day, 6am to 11pm, with average usage and have about 40% battery left. VR drains my battery like butter on a stove.
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How Is this even possible?? Do u have aod on? I need immensity help
I too have some similar questions just like @gleggie has posted
"how many cycles should I go through before I judge battery? And should I disable fast charging? Does fast charging damage the battery?"
Also how to measure battery cycles? Any credible app for the same?
Fast charge doesn't affect battery life immediately, charging your phone faster causes heating and overworking of battery, so slowly, average battery life decreases.
Slow charge when possible! (Wireless charge generally heats more than wall charge!)
... My 2 cents
My phone on fast charging, even wireless doesn't get any hotter than previous phones. My other half has a HTC One M8 for two years and still gets 5-6 hours SOT and has fast charged since day one.
I use fast wireless charging and get 6 hours SOT.
All I turned off is NFC, and my signal is usually full.
amedeonofal said:
Fast charge doesn't affect battery life immediately, charging your phone faster causes heating and overworking of battery, so slowly, average battery life decreases.
Slow charge when possible! (Wireless charge generally heats more than wall charge!)
... My 2 cents
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So, to slow charge a S7, do we have to turn off fast charging from the settings and then charge via the charger that came with the phone(the so called fast charger) or should we use a charger from an old phone say SIII etc.?
Does this hold true for Motorola's phone also which have turbo charging option?
Also how to measure battery cycles? Any credible app for the same?
Just turning off fast charge you do a lot good for your mobile..
One thing you can do is check battery temperature as you change charger or method. I don't know about Motorola, but maybe its battery is user replaceable... I personally don't know any app that keeps track of battery temperature
billubakra said:
Also how to measure battery cycles?
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Click to collapse
On Exynos you can find it in
sys/class/power_supply/battery/battery_cycle
Edit:
Even better, try my new app
https://forum.xda-developers.com/an...ge-monitor-t3555496/post71003358#post71003358
amedeonofal said:
Just turning off fast charge you do a lot good for your mobile..
One thing you can do is check battery temperature as you change charger or method. I don't know about Motorola, but maybe its battery is user replaceable... I personally don't know any app that keeps track of battery temperature
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Click to collapse
Thanks dear. I have turned off fast charge, should I now charge via the charger that came with the phone(the so called fast charger) or should we use a charger from an old phone say SIII etc.?
Moto G's battery is not user replaceable.
waterdaan said:
On Exynos you can find it in
sys/class/power_supply/battery/battery_cycle
Edit:
Even better, try my new app
https://forum.xda-developers.com/an...ge-monitor-t3555496/post71003358#post71003358
Click to expand...
Click to collapse
Thanks for replying. I wasn't able to find any battery cycle file/log in that location, quite strange. And yes I have the Exynos version. I will test your app and will get back to you.
Of the little what I have understood from various threads here is to charge the battery when it is between 20-40% to 80-90% if you want to have a good battery life. I used to do the complete opposite charge, when the battery is at say 6-7% and charge it till it is maxed. I used to do the same for my laptop, any other tip for the battery?
billubakra said:
Thanks for replying. I wasn't able to find any battery cycle file/log in that location, quite strange. And yes I have the Exynos version. I will test your app and will get back to you.
Click to expand...
Click to collapse
In my app you'll be able to see it, when you turn on
Show sys/class/power_supply in the settings.
As you can see in the screenshot, mine is 52.
sys/class/power_supply/battery
waterdaan said:
In my app you'll be able to see it, when you turn on
Show sys/class/power_supply in the settings.
As you can see in the screenshot, mine is 52.
sys/class/power_supply/battery
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Click to collapse
How to turn on Show sys/class/power_supply in the settings?
billubakra said:
How to turn on Show sys/class/power_supply in the settings?
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Click to collapse
No problem, I've answered in the app thread
https://forum.xda-developers.com/showpost.php?p=71010017&postcount=5
Hello, I would like to know if there are some "rules" considering charging my phone ? For example, do I need to wait until my phone shuts down or doesn't it matter when I charge it.
main thing is dont play games when charging, everything else is fine. it charges faster with phone off than on
1- don't use it while charging.
2- don't let the battery completely drain (charge when it reaches 15%)
3- try to avoid charging overnight
Avoid using it while charging if you can. Don't drain the battery completely before charging, try to leave at least 10-15% battery before you charge it. Don't charge it overnight as the Honor 8 has fast charging capabilities. If need charged it in the morning, before you get ready for the day.
I don't agree that it is harmful to charge a phone overnight. Once a smartphone is fully charged it has a built in mechanism that stops the charging thus preventing the phone from overcharging.
heap1 said:
I don't agree that it is harmful to charge a phone overnight. Once a smartphone is fully charged it has a built in mechanism that stops the charging thus preventing the phone from overcharging.
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But you have fast charge in this device so no need to charge ir overnight you can do it in the morning if you need it
sTefIx420 said:
But you have fast charge in this device so no need to charge ir overnight you can do it in the morning if you need it
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That's true. However, there shouldn't be any danger of damaging the phone if you do charge it overnight. Either way you decide to charge it should be OK.
Oh okay, one more question; do I always have to charge it to 100% or is it okay to remove the charger at (for example) 58%?
Look if your going to charge the phone do it to 100% But if you need to go out before it's fully charged its not going to do anything to the phone.. Just walk with your charger and charge it when your able to..
Haroun16 said:
Oh okay, one more question; do I always have to charge it to 100% or is it okay to remove the charger at (for example) 58%?
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For modern batteries, it does no harm to unplug your device before 100%.
Actually it is "healthiest" for batteries to be kept between 80%-20%
heap1 said:
That's true. However, there shouldn't be any danger of damaging the phone if you do charge it overnight. Either way you decide to charge it should be OK.
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While that is true. But there is always a chance that the Lithium Ion battery could become unstable after its been used for a while.
One thing i've always wanted to know is if we plug our phones at 100% battery it still uses power from the battery and keep charging it over and over. Or if it uses power directly of the wall without consuming battery.
I want to use my phone for longer periods but im worried about battery health in the long run
fabricio7p said:
One thing i've always wanted to know is if we plug our phones at 100% battery it still uses power from the battery and keep charging it over and over. Or if it uses power directly of the wall without consuming battery.
I want to use my phone for longer periods but im worried about battery health in the long run
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Click to collapse
The common recommendation for battery health on most smartphones with Li ion battery, is to charge often (avoid deep discharge/charge cycles), and not leave it on the charger for long periods of time when it is fully charged.
When connected to the charger and fully charged, it will let the battery drop slightly, then recharge, over and over again. I've seen the battery meter on this phone drop down from 100% to 99% when connected to the charger. Although I have a feeling it is doing this a lot more than you would be able to detect from the % meter.
redpoint73 said:
The common recommendation for battery health on most smartphones with Li ion battery, is to charge often (avoid deep discharge/charge cycles), and not leave it on the charger for long periods of time when it is fully charged.
When connected to the charger and fully charged, it will let the battery drop slightly, then recharge, over and over again. I've seen the battery meter on this phone drop down from 100% to 99% when connected to the charger. Although I have a feeling it is doing this a lot more than you would be able to detect from the % meter.
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I see, so no aparent benefit in using it with power cable conected.
thank you
fabricio7p said:
I see, so no aparent benefit in using it with power cable conected.
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Click to collapse
In fact, more likely to be harmful than beneficial. I'd say it is better to use it for a while, let the charge drop (say down to 60-80%) than recharge to full, and disconnect the charger (don't leave it charging after it is full).
I should add that this is somewhat debatable. I don't follow all these rules myself. I'm pretty sloppy about putting the phone on the charger when I go to bed, and not unplugging it until I wake up. So plugged in for 8 hours or so, when it only takes 1-2 hours to charge to full. And we all drain the battery pretty low from time to time. So again, the is the deep discharging that should generally be avoided.
But if you want general guidelines or "best practice" than there it is.
I think its good idea to leave phone charging
If you want to charge the battery to the top end, you can charge it to 100%, let half a hour for the battery to cool and for the ions to set into some equilibrium state, and then you can charge it for a little bit more. (The battery percentage will not necessarily show it. The battery voltage is not all the time 100% correlated with its electric charge).
But as redpoint73 said, the common recommendation for Li ion battery is to disconnect it from charger while full.