In the last 10 days or so, I have noticed that battery care isn't activated when I charge my phone overnight. I always check to make battery care is on and I leave my phone left on overnight too. 4 weeks previous to this issue, I hadn't been experiencing any such issues.
Any suggestions guys?
Sent from my F8331 using XDA-Developers mobile app
I had the same problem after previous weekend, it worked perfectly till Thursday but when I didn't charge it overnight from Friday till Sunday it stopped working and activated itself again yesterday.
Thought that it would learn that I charge the phone overnight only during work days and don't during weekends.
Still I think it's a great idea but it seems that it needs longer learning or some changes.
Wysłane z mojego F8331 przy użyciu Tapatalka
It's very stupid I think; they should've allowed the user to set the wake up time instead of "learning", it has never worked correctly for me, its always 1-2 hrs off which makes it kind of useless. I hope they can do it in a future update.
Still having no luck with battery care. Would a factory reset likely to resolve the issue?
Sent from my F8331 using XDA-Developers mobile app
They should allow to select the timewe want to charge it fully to 100% manually as well in the software update.
Or at least tie into system alarms!
Sent from my F8331 using Tapatalk
I find that if I do a short charge during the day, it disrupts the Battery Care functionality (overnight) and then has to re-learn with a few normal overnight charges.
This seems to nullify the benefit of Battery Care as my phone would now sit on the charger for long periods at 100% again while re-learning...exactly what Battery Care is suppose to prevent.
I might as well just do small charges during the day when convenient so I don't have to charge overnight and "ruin" my battery further while it re-learns. Frustrating.
I really hope they get this feature sorted out.
It helps me to plug the phone in, go to settings, switch battery care off then back on and it usually works. I still keep the setting on all the time. Also I typically restart my phone after plugging it in every night and closing backround running apps. It seems to minimize any bugs I have experienced.
So I generally plug in the phone, restart it, then flick battery care off then back on and I haven't had many problems. That would be my suggestion to try
I should add that I have a US version of the phone. I flashed UK firmware then performed a software repair via Xperia companion. The last software repair I performed was probably over a month ago
Also, lesPaulGuitar, are you plugging your phone in for a short charge during the day because without doing so you would not have enough charge to reach the end of the day? If not, i suggest avoiding uneccesary cycles on your battery. Every additional cycle you put on it. Wether charging from 50% to 100% or from 40% to 80%, an additional cycle will reduce over all cycle life. Especially if the cycles aren't complete (as in not charging fully before discharging again). While lithium ion doesn't develop a memory it does still have a limited cycle life
This **** is stupid and useless without user input. Why can't I choose the times? I know everything better. Not everybody has dedicated times for work or. School.
Verstuurd vanaf mijn F8331 met Tapatalk
Does the phone need to be left turned on during the night while charging for this to work? I have the phone coming and I was under the impression that this battery feature would work even with the phone turned off. Any clarification is appreciated.
Hershchel Clogs said:
It helps me to plug the phone in, go to settings, switch battery care off then back on and it usually works. I still keep the setting on all the time. Also I typically restart my phone after plugging it in every night and closing backround running apps. It seems to minimize any bugs I have experienced.
So I generally plug in the phone, restart it, then flick battery care off then back on and I haven't had many problems. That would be my suggestion to try
I should add that I have a US version of the phone. I flashed UK firmware then performed a software repair via Xperia companion. The last software repair I performed was probably over a month ago
Also, lesPaulGuitar, are you plugging your phone in for a short charge during the day because without doing so you would not have enough charge to reach the end of the day? If not, i suggest avoiding uneccesary cycles on your battery. Every additional cycle you put on it. Wether charging from 50% to 100% or from 40% to 80%, an additional cycle will reduce over all cycle life. Especially if the cycles aren't complete (as in not charging fully before discharging again). While lithium ion doesn't develop a memory it does still have a limited cycle life
Click to expand...
Click to collapse
I have also tried turning Battery Care on and off with no success unless it was already dialed in to begin with. In that event, it would then work. I'll try restarting the phone first next time it acts up...although I think I've done that too before.
Regarding small charges during the day, it is usually due to not starting the day with a full charge such as when ending the previous day with, say, 50% left or so. Or it could be due to the battery running out before the day is finished from heavy camera use, etc.
My understanding about L-ION batteries is that small charges that add up 100% in total (like five separate 20% charges) equal one charge cycle. So no harm doing small charges...
---------- Post added at 04:05 PM ---------- Previous post was at 04:02 PM ----------
jaseman said:
Does the phone need to be left turned on during the night while charging for this to work? I have the phone coming and I was under the impression that this battery feature would work even with the phone turned off. Any clarification is appreciated.
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Click to collapse
I'm pretty sure that that phone needs to be on because it is a piece of software that needs to run which controls it.
That said, I've not tested it with the phone off.
Any time you reverse the charge current is one cycle. How far down you discharge is your depth of discharge. So even if you drain the phone from 80% to 70% and plug it in and only charge it back up to 80%, that's one cycle. What you are saying would be true if you don't discharge the battery at all, similar to what Sony does with their battery care. You can charge lithium in short bursts but if you discharge between those charges then you are cycling your battery. So no, short incomplete charges aren't absolutely detrimental to your battery but will be considered in regards to your overall cycle life. For every 70 millivolt (roughly 10%) drop in voltage during a cycle, your overall cycle life is cut in half. Meaning you'll get twice as many cycles if you only drain your phone to 60% instead of 50%. To take full advantage of the chemistry, it is best to fully charge before discharging. You could expect 2500-3000 cycles at 10% depth of discharge, but only 500-700 or so at 50% depth of discharge before capacity is 70% of what it's rated. This is information I got from Cadex Labratories and deal with on a daily basis at work.
Hershchel Clogs, does the Qnovo battery technology seem sound based your battery knowledge? Also, thanks for sharing.
Sent from my F8331 using XDA-Developers mobile app
Hershchel Clogs said:
Any time you reverse the charge current is one cycle. How far down you discharge is your depth of discharge. So even if you drain the phone from 80% to 70% and plug it in and only charge it back up to 80%, that's one cycle. What you are saying would be true if you don't discharge the battery at all, similar to what Sony does with their battery care. You can charge lithium in short bursts but if you discharge between those charges then you are cycling your battery. So no, short incomplete charges aren't absolutely detrimental to your battery but will be considered in regards to your overall cycle life. For every 70 millivolt (roughly 10%) drop in voltage during a cycle, your overall cycle life is cut in half. Meaning you'll get twice as many cycles if you only drain your phone to 60% instead of 50%. To take full advantage of the chemistry, it is best to fully charge before discharging. You could expect 2500-3000 cycles at 10% depth of discharge, but only 500-700 or so at 50% depth of discharge before capacity is 70% of what it's rated. This is information I got from Cadex Labratories and deal with on a daily basis at work.
Click to expand...
Click to collapse
Should I follow this suggestion? Or keep small cycle of charges by using accubattery suggestion to plug off when I reach 80%?
Related
my last g2x battery lasted like 4 hrs on a full charge what is the best way to charge the new one? do i let the battery run out then charge it?
When you first get a phone, you should let the battery die before charing it. Then charge it completely after it dies, this will maximize your battery life. If you charge it right out the box, you're actually reducing the amount of juice the battery can hold.
rashad1 said:
When you first get a phone, you should let the battery die before charing it. Then charge it completely after it dies, this will maximize your battery life. If you charge it right out the box, you're actually reducing the amount of juice the battery can hold.
Click to expand...
Click to collapse
That's not really accurate. Lithium Ion batteries have no memory effect like older batteries so charging them from halfway full does not reduce the maximum capacity.
What happens is the phone needs to learn to measure the amount of mAh from the phone and recognize what battery % that means. By taking the phone through the full discharging and charging cycle, the battery drivers pick up on this and will better report the battery level. With a poorly calibrated battery, you do not get less battery, but instead you just will not see accurate information about the charge level. For example, my first discharge went quickly to about 10%, and even quickly below 5%, but stayed on for hours between 5% to eventually shutting off.
The battery still will not die faster, but my phone thought it was much lower than it was, giving it the appearance of dying faster. Point is, you can do the charge/discharge cycle whenever, not just the first time, and it won't effect your long term battery health.
1) do factory reset
2) drain completely
3) charge completely
thanks!
thanks everyone for your advice!
I think it really depends on who you ask. lol Some people will say let it drain first then charge it fully. I have read info on battery maker sites that suggest when you get their battery that you let it charge fully for at least 8 hours, then let it discharge fully. They say to do this the first 5 charges to increase battery life.
When I get a new phone or battery that's what I do. as soon as I get it I charge it up overnight, then let it discharge completely for the first 5 charges. I can only speak by my experience and my experience tells me it makes a difference. Here is my reasoning: me and my ex gf went one day to get new phones. We got the same phone. She started using hers as soon as we left the store. I waited. I charged it up overnight fully and did the conditioning procedure. Our phones were pretty much mirrors of each other app and software wise. Her battery would die out a couple of hours before mine. Battery usage also didnt report any HUGE differences in consumption .
Also every once and a while I go into Clockwork recovery and wipe battery stats(after it's been fully discharged) and re do the conditioning process. It might just be a mental thing, but for me this seems to work
supposedly from htc.....
1) Turn your device ON and Charge the device for 8 hours or more 2) Unplug the device and Turn the phone OFF and charge for 1 hour 3) Unplug the device Turn ON wait 2 minutes and Turn OFF and charge for another hour Your battery life should almost double, we have tested this on our devices and other agents have seen a major difference as well
I heard/read somewhere that you should never let a lithium ion battery fully discharge. It supposedly shortens its lifespan every time you fully discharge it. Instead, you are suppose to just top it off and not let it remain on the charger, for extended periods of time, once its reached a full charge. YMMV
*Omnipresent* said:
I heard/read somewhere that you should never let a lithium ion battery fully discharge. It supposedly shortens its lifespan every time you fully discharge it. Instead, you are suppose to just top it off and not let it remain on the charger, for extended periods of time, once its reached a full charge. YMMV
Click to expand...
Click to collapse
This is "more" true for everyday normal usage. Yes, you shouldn't constantly fully charge and fully discharge every time you use your phone. But for battery calibration it is necessary/beneficial.
I also hard that during the first charge after turning the phone off you have to strange on your head for ten minutes, then only use your left hand for the rest of the day and you will double your battery life
rashad1 said:
When you first get a phone, you should let the battery die before charing it. Then charge it completely after it dies, this will maximize your battery life. If you charge it right out the box, you're actually reducing the amount of juice the battery can hold.
Click to expand...
Click to collapse
Well I did it this way too. I get good batt
Sent from my LG-P999 using XDA Premium App
Coming from a Nexus 4 I have got used to charging my phone every night. The battery on the z3 is a lot better, it comes off the charge at 5am and as I type it is 10pm and the battery is still on 66%.
Would I be doing the battery any harm by putting it on the charge every night? I know it can last me through work tomorrow but I like the have it fully charged for peace of mind.
finty said:
Coming from a Nexus 4 I have got used to charging my phone every night. The battery on the z3 is a lot better, it comes off the charge at 5am and as I type it is 10pm and the battery is still on 66%.
Would I be doing the battery any harm by putting it on the charge every night? I know it can last me through work tomorrow but I like the have it fully charged for peace of mind.
Click to expand...
Click to collapse
Lithium Ion batteries last a number of charges, slowly losing the capacity to hold charge as the number of charges increases. Why don't you charge the phone when it needs charging? You can always use stamina mode to keep it going until you get to a charger if you need it to last a few more hours.
I believe its about 350-500 cycles to 80% capacity. Also when your phone says 0% Battery its more like 60% (Don't quote me on that) capacity to prolong battery life.
You should be fine for the life of the device.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
TL-DR - charge every night, don't worry about the rest.
Info
finty said:
Coming from a Nexus 4 I have got used to charging my phone every night. The battery on the z3 is a lot better, it comes off the charge at 5am and as I type it is 10pm and the battery is still on 66%.
Would I be doing the battery any harm by putting it on the charge every night? I know it can last me through work tomorrow but I like the have it fully charged for peace of mind.
Click to expand...
Click to collapse
you should not be worry about battery problem in xperia because there 2 power saving option normal stamina and ultra stamina so you can take your phone for whole day usage even on ~60% of battery
:good:
so is it ? or is it not bad to charge it every night? even if the battery isn't low
Standby is really good. If you go to sleep at 66%, it will likely be at 66 or 65% when you wake up. You might not need to charge till tomorrow night.
NiggZ said:
so is it ? or is it not bad to charge it every night? even if the battery isn't low
Click to expand...
Click to collapse
You don't complete a discharge cycle, when you charge with some charge % left so its good to charge it, you are fine.
I charge it every night. It is between 40-60% full when i connect it. If there are some 350-500 charge cycles untill capacity drops to 80% then it is time to upgrade anyway so...
for lithium ion batteries in mobile phones just recharge as it suits your day. Yes, you might be able to preserve some single digit percent over the long run but there won't be any dramatic losses if you don't take special care
I noticed this on my old S4 as well. 99% took the longest to charge up to the next %. Anyone know why this is? My phone was charging at 99% for like 15 minutes. I also noticed that using the phone from 100-99% goes very quick :laugh:
OnSugarHill said:
I noticed this on my old S4 as well. 99% took the longest to charge up to the next %. Anyone know why this is? My phone was charging at 99% for like 15 minutes. I also noticed that using the phone from 100-99% goes very quick :laugh:
Click to expand...
Click to collapse
This is perfectly normal. Think of it as inflating a balloon. The last 1% will be really hard and yet it will deflate as fast as the rest. It is not recommended to push that last 1% too often. Ideally you want to stay between 30-70%.
pintycar said:
This is perfectly normal. Think of it as inflating a balloon. The last 1% will be really hard and yet it will deflate as fast as the rest. It is not recommended to push that last 1% too often. Ideally you want to stay between 30-70%.
Click to expand...
Click to collapse
Do you have a source for that?
poldie said:
Do you have a source for that?
Click to expand...
Click to collapse
He is correct some say 20-80%, best example is Samsung laptops, mine had an option in the bios of topping charge of at 70% to prolong battery life.
http://batteryuniversity.com/learn/article/do_and_dont_battery_table
Check out my recharge experiments: http://forum.xda-developers.com/z3/general/xperia-z3-battery-life-recharge-t2916773
I heard somewhere that is a solution so battery dont became overcharghed.
And what kills battery capacity is if it became static. There must be electricity flow trought battery to prolong it life time.
Your only supposed to charge your phone to no more then 70%?? First i heard. Never heard that before, Interesting.
Blaalad12 said:
Your only supposed to charge your phone to no more then 70%?? First i heard. Never heard that before, Interesting.
Click to expand...
Click to collapse
I looked into the same thing last month.
https://discussions.apple.com/thread/4465051?tstart=0
When possible avoid frequent full discharges. Instead, charge the battery more often. There is no concern of battery's memory when applying unscheduled charges. A high residual charge before recharge is a benefit rather than a disadvantage for chemistry of Li-Pol battery on all iPads. The best way is to keep battery between 40% and 80% charged. After LiP battery of iPad is charged to 80% capacity it switches to trickle charging with a potential to cause plating of metallic lithium, a condition that renders the cells unstable. One more incentive to keep battery of iPad between 40-80% is the rate of the charge loss when gadget is not in use. The charge loss amounts up to 6% per year when battery is fully charged, but only 2% per year when it is half-charged. Nevertheless, short discharges with following recharges do not secure the regularly calibration needed to synchronize the fuel gauge with the battery's state-of-charge. A deliberate full discharge and recharge every 30-40 charges fixes this problem.
I still currently own a Samsung galaxy s3, and I have been charging it to full 100% and letting it drain fully until it shuts off. Once i get S8+, should i still be doing this or will that mess up the battery over time. Do you guys drain until 10% , and charge up too 90%? Was curious.
Batteries have so many charge cycles at a certain depth of discharge. My understanding is you get more charge cycles if you discharge less.
So, unlike removable battery phones, I plan on leaving this phone on a charger as much as possible and usingbt the battery when necessary.
The battery change on this device looks hairy!
masbirdies said:
Batteries have so many charge cycles at a certain depth of discharge. My understanding is you get more charge cycles if you discharge less.
So, unlike removable battery phones, I plan on leaving this phone on a charger as much as possible and usingbt the battery when necessary.
The battery change on this device looks hairy!
Click to expand...
Click to collapse
I See, does the phone stop from overcharging the battery once you reach 100%?
It's best to keep it between 20%-80%
Also, pretty much all lithium ions are nearly impossible to overcharge.
You generally want to keep your batteries between 40-80% I believe is the sweet spot. I will not let my battery go below 30% generally and I top it off whenever available. Forgot where I read it but as others have said your phone has so many charge cycles (500 or so before the battery starts losing a certain compacity). And if you constantly charge from 0-100% each time, you are using a full charge cycle. Instead if you charge it at 50%, you would be using half a cycle, etc.
Someone can correct me if I'm wrong.
Sent from my SM-G955U using XDA-Developers Legacy app
Ive read similar things. I generally follow this and try to charge before i reach 20% up til 89%.
Ive also read somewhere to deplete battery to 0 atleast every few months if not sooner. Dont know if its true though.
http://techlife.samsung.com/tips-keep-smartphone-charged-1059.html
Charge Regularly
To get the most out of your smartphone's battery, you'll need to charge it properly. Most smartphones have a lithium-ion battery that lives longer when charged regularly. Unlike the nickel batteries used in older phones, lithium-ion batteries do best when kept above a 50 percent charge. Repeatedly allowing the battery to drain fully may shorten its life and decrease its overall capacity. If this happens, you'll need to charge the battery more frequently and it may last only a few hours before needing a charge, for example.
Your battery will also perform better if you don't let it charge to 100 percent, so take it off the charger at about 80 to 90 percent capacity. Leaving the phone connected to the charger when the phone is completely charged may lower battery life if you do it repeatedly.
Actually what happens when you leave the phone connected to the charger is that it stops charging completely. I do not think it affects battery life in any noticeable way, unless you leave it for hours connected maybe.
If you're using your phone quite heavily surely you will be constantly charging if the optimal usage is between 50 and 90% of charge?
orkavaneger said:
Actually what happens when you leave the phone connected to the charger is that it stops charging completely. I do not think it affects battery life in any noticeable way, unless you leave it for hours connected maybe.
Click to expand...
Click to collapse
What will happen is that when it drops to 99%, it will charge back to 100%. Over the night, it could happen many times. It is a circulating advice for a long time now: don't let your phone on the charger for the night.
I must admit I try never to charge it overnight. I'm managing to get just over a day of use before it needs charging.
but the proof is missing, there are many such fairies in the internet, even if, after 2 years, most buy a new phone anyway. and so long holds each battery! With my s6 I still get over the day. and charge it always over night!
Thor1964 said:
but the proof is missing, there are many such fairies in the internet, even if, after 2 years, most buy a new phone anyway. and so long holds each battery! With my s6 I still get over the day. and charge it always over night!
Click to expand...
Click to collapse
I agree 100% with the above quote. There is no real proof one way or another. It is all speculation run amok.
The only fact is that the battery will slowly degrade over time. THis is what the OEM's want!
They make it very difficult to replace the battery so that you will buy a new phone... plain and simple!
Any phone built within the last two years is more than powerful enough to do anything needed for communications... the reason cell phones exist in the first place. I always charge my phones (when needed) overnight. They all last as long as any other phone.
I too am caught in this ridiculous merry-go-round of buying a new phone all the time because we want to sell them before the battery gets too old.
Progress...argh.
There's a reason why electric vehicles don't use 100% of their battery capacity
But worrying about your phone's battery life is too much of a hassle, I'll have a new phone by the time this one is useless
And since the battery is not user replaceable, it has the same warranty time as the phone. If there are problems, samsung can replace my battery
reyals1 said:
And since the battery is not user replaceable, it has the same warranty time as the phone. If there are problems, samsung can replace my battery
Click to expand...
Click to collapse
The warranty period for the S8 in the UK is 24 months but the battery is only 12 months according to Samsung's site
Sent from my SM-G950F using Tapatalk
I guess maybe the root limitation isn't so bad lol
Given that it (and the no pay apps/stuff that needs Knox) is the only remaining issue for some (SOME) people (a very few of the people who've upgraded post-root still have reported the screen issue, but none of this is scientific) , I guess one could claim that the downsides are low now!
Thor1964 said:
but the proof is missing, there are many such fairies in the internet, even if, after 2 years, most buy a new phone anyway. and so long holds each battery! With my s6 I still get over the day. and charge it always over night!
Click to expand...
Click to collapse
Here's the proof:
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Google an article by Popular Mechanics, too. They said the same thing.
Also, Google what Tesla tells their owners to do.
jaseman said:
I agree 100% with the above quote. There is no real proof one way or another. It is all speculation run amok.
The only fact is that the battery will slowly degrade over time. THis is what the OEM's want!
They make it very difficult to replace the battery so that you will buy a new phone... plain and simple!
Any phone built within the last two years is more than powerful enough to do anything needed for communications... the reason cell phones exist in the first place. I always charge my phones (when needed) overnight. They all last as long as any other phone.
I too am caught in this ridiculous merry-go-round of buying a new phone all the time because we want to sell them before the battery gets too old.
Progress...argh.
Click to expand...
Click to collapse
See above.
S6 is only $150 on Swappa. Mobile phones have $h1t for residual value. Trading up to the latest and greatest isn't something everyone can afford to do every 2 years.
So, what you're saying is, in order to keep my battery from only lasting a few hours and having to charge it more frequently a couple years down the road, I should start to only use my phone for a few hours at a time and charge it more frequently right now....
How much will the battery replacement cost at Samsung?
SirNamero said:
So, what you're saying is, in order to keep my battery from only lasting a few hours and having to charge it more frequently a couple years down the road, I should start to only use my phone for a few hours at a time and charge it more frequently right now....
Click to expand...
Click to collapse
Finally someone gets it :good: made my day man.
Neo3D said:
Charge Regularly
To get the most out of your smartphone's battery, you'll need to charge it properly. Most smartphones have a lithium-ion battery that lives longer when charged regularly. Unlike the nickel batteries used in older phones, lithium-ion batteries do best when kept above a 50 percent charge. Repeatedly allowing the battery to drain fully may shorten its life and decrease its overall capacity. If this happens, you'll need to charge the battery more frequently and it may last only a few hours before needing a charge, for example.
Your battery will also perform better if you don't let it charge to 100 percent, so take it off the charger at about 80 to 90 percent capacity. Leaving the phone connected to the charger when the phone is completely charged may lower battery life if you do it repeatedly.
Click to expand...
Click to collapse
Charging your phone to 100% won't harm it. Letting it die at 0% though can harm it. Lithium-ion batteries don't like dying, but charging them to 100% won't hurt it, in fact leaving it plugged in for hours, even days afterward, also won't harm it. Chargers stop charging devices at 100%. Phones will be fine as long as you don't let them completely die. If you've ever wondered why they will still tell you the battery is "dead" when trying to power it on after it dies, that's because it's not "dead" so to speak, but the phone shut off to prevent damage to the battery.
In short, letting your phone die CAN harm it, but usually, it won't, because phones power off with some power left in them due to a "dead" battery, to protect the battery. This is why once they die you can still hold the power button and it will tell you its dead. Finally, charging your phone to 100% won't hurt it in any way, as chargers stop charging devices after they reach 100%.
CSxKING_ said:
Charging your phone to 100% won't harm it. Letting it die at 0% though can harm it. Lithium-ion batteries don't like dying, but charging them to 100% won't hurt it, in fact leaving it plugged in for hours, even days afterward, also won't harm it. Chargers stop charging devices at 100%. Phones will be fine as long as you don't let them completely die. If you've ever wondered why they will still tell you the battery is "dead" when trying to power it on after it dies, that's because it's not "dead" so to speak, but the phone shut off to prevent damage to the battery.
In short, letting your phone die CAN harm it, but usually, it won't, because phones power off with some power left in them due to a "dead" battery, to protect the battery. This is why once they die you can still hold the power button and it will tell you its dead. Finally, charging your phone to 100% won't hurt it in any way, as chargers stop charging devices after they reach 100%.
Click to expand...
Click to collapse
WRONG.
Lithium-ion suffers from stress when exposed to heat, so does keeping a cell at a high charge voltage.
Most Li-ions charge to 4.20V/cell, and every reduction in peak charge voltage of 0.10V/cell is said to double the cycle life. For example, a lithium-ion cell charged to 4.20V/cell typically delivers 300–500 cycles. If charged to only 4.10V/cell, the life can be prolonged to 600–1,000 cycles; 4.0V/cell should deliver 1,200–2,000 and 3.90V/cell should provide 2,400–4,000 cycles.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Too many users have no idea about the facts of Lithium-ion batteries, sadly. Don't spread false information, learn the facts. Charging to 100% IS stressful for any Li-ion battery. The last 10% are the most stressful when charging. That's why Sony invented "Battery Care" which will charge the last 10% very slowly exactly for this reason.
Neo3D said:
http://techlife.samsung.com/tips-keep-smartphone-charged-1059.html
Charge Regularly
To get the most out of your smartphone's battery, you'll need to charge it properly. Most smartphones have a lithium-ion battery that lives longer when charged regularly. Unlike the nickel batteries used in older phones, lithium-ion batteries do best when kept above a 50 percent charge. Repeatedly allowing the battery to drain fully may shorten its life and decrease its overall capacity. If this happens, you'll need to charge the battery more frequently and it may last only a few hours before needing a charge, for example.
Your battery will also perform better if you don't let it charge to 100 percent, so take it off the charger at about 80 to 90 percent capacity. Leaving the phone connected to the charger when the phone is completely charged may lower battery life if you do it repeatedly.
Click to expand...
Click to collapse
Technically speaking,
A source brought up a couple of months ago says that in a year, approximately 300 charges and/or more, you will lose about 30% of the year. Charging it from 50% and higher will burn out the battery even more. It's better off letting the phone go to a certain threshold of ~>15% of the battery, then charge it so it could have more longer life in these years. Its beneficial for longer life, but day to day wise no. But long story short, i don't really agree with the method you recommend us doing.
---------- Post added at 03:26 PM ---------- Previous post was at 03:24 PM ----------
CSxKING_ said:
Charging your phone to 100% won't harm it. Letting it die at 0% though can harm it. Lithium-ion batteries don't like dying, but charging them to 100% won't hurt it, in fact leaving it plugged in for hours, even days afterward, also won't harm it. Chargers stop charging devices at 100%. Phones will be fine as long as you don't let them completely die. If you've ever wondered why they will still tell you the battery is "dead" when trying to power it on after it dies, that's because it's not "dead" so to speak, but the phone shut off to prevent damage to the battery.
In short, letting your phone die CAN harm it, but usually, it won't, because phones power off with some power left in them due to a "dead" battery, to protect the battery. This is why once they die you can still hold the power button and it will tell you its dead. Finally, charging your phone to 100% won't hurt it in any way, as chargers stop charging devices after they reach 100%.
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This is incorrect. When your phone fully dies then charges to 90-100%, it does a battery cycle. This cycle is worth doing from time to time to keep the safety of your device and battery from not overheating.
brokich said:
WRONG.
Lithium-ion suffers from stress when exposed to heat, so does keeping a cell at a high charge voltage.
Most Li-ions charge to 4.20V/cell, and every reduction in peak charge voltage of 0.10V/cell is said to double the cycle life. For example, a lithium-ion cell charged to 4.20V/cell typically delivers 300–500 cycles. If charged to only 4.10V/cell, the life can be prolonged to 600–1,000 cycles; 4.0V/cell should deliver 1,200–2,000 and 3.90V/cell should provide 2,400–4,000 cycles.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
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They Discharge Batteries too much with 3,0 Volts aka They do put too much Stress on them, bad for BatteryLife and Security depeding which Chemicals are used (INR, NMR, IMR etc). With
*18650 Li-Ion`s thats 0,2 Volts above the critical Boom Limit. Normally the safe Zone for Battery-Life and Security is 3,15V to 3,20V min.
*18650 Idustry Batteries which are used for Highdrain-Usage (Up to 35 Amps) like Battery-Scredrivers (And other Tools for Work), RC-Sports and E-Zigarettes.