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Is it true charging li-ion no more than 80% increase its life?

From http://www.wmskins.com/blog/how-to-increase-battery-life-of-windows-mobiles:
1. A Lithium Ion battery should never be charged to 100% or fully Discharged. The famous 80-20 rule is applicable here as well, though in a different way. Charging to 80% increases battery life.
2. Don’t wait for full discharge, charge it frequently. Keeping the battery near to 80% always, gives better life. This is also what many vendors claim as “memory effect”.
I followed that advice and then after a few weeks, when once I charged it to 100%, it dropped quickly to 80%! and has been like that since. now I don't give a damn to that rule and charge my phone to 100% instead.

At this point, I would advise you do a full charge and deep discharge of your phone. Just to allow the phone to calibrate itself to the battery again.
However, I would advise against running programs to intentionally drain it at a high draw. So instead of playing 5 hours of FPSECE to drain it flat, just let it sit on standby and use it as you normally would, until it dies. Then charge it back up in one continuous charge (refrain from unplugging until it goes back to 100%). Hopefully that will restore the accuracy of your battery meter by a bit.
And IMHO, the article you included discusses things about batteries that are no longer true....
2. Don’t wait for full discharge, charge it frequently. Keeping the battery near to 80% always, gives better life. This is also what many vendors claim as “memory effect”.
No. "Memory effect" is, in laymen terms, the battery not being able to hold above a certain charge after being repeatedly discharged from the same capacity. E.g. being discharged at 80%. It doesn't "give battery life" -- in fact it kills your battery's capacity.
This is a term more relevant for old NiCd batteries. LiONs and most NiMH batteries have very weak/no memory effect.
3. Every battery has limited Full charge-discharge cycles. Of the order of 300+. In other words a typical phone battery can be fully charged/discharged 300 times. Doing more frequent charges, as specified in point #2, will increase overall life.
Partially true. Every battery can be charged a number of times before its ability to hold a charge deteriorates. Usually this is around 300, though the exact number varies between individual batteries. However, the concept of a "cycle" isn't exact -- just because you charged from 60-80% (or whatever) doesn't mean you didn't use a cycle. It's really a continuum, and should only be conceptualized as the battery losing its ability to be charged and hold a charge, the more times you charge it.
4. During first time use (when the battery is new) don`t use it till its fully charged. This is why it is always written on manuals “let the device charge for 2-3 hours”.
The necessity of preconditioning is controversial now. There is little evidence to suggest that devices nowadays benefit from preconditioning, and likewise there is little evidence that not doing so harms battery longevity. Many manuals these days simply omit to mention preconditioning.
5. Best way to increase battery life is Not to use it. If you keep AC power plugged in on your phones, keeping the battery at 80% (as in #1), your battery will last longer. Though discharging it once in a month would be must in such cases.
Partially true. Not using your battery does indeed help its longevity, but not by plugging into the AC. Heat is a LiON battery's enemy, and plugging it into your wall will generate heat that is ultimately bad. This translates to laptop batteries as well -- if you want to store a laptop battery, the best bet is to discharge it to 40%, then put it somewhere cool (even the fridge if you want).
Also I would say doing a deep discharge once a month is too frequent. Once every 2 or even 3 months is more appropriate.
Finally, LiON batteries themselves have a shelf life. So even if you let them sit there, they will lose their function after a few years. Just so yo uknow.
6. Surrounding temperature contributes a lot. Colder weather gives better battery life. So make sure your cellphone doesn’t overheat, if it does, find ways to keep it cool.
True. And that's why you shouldn't leave it plugged in.
Learn more about batteries here: http://www.batteryuniversity.com/

felixdd said:
E.g. being discharged at 80%. It doesn't "give battery life" -- in fact it kills your battery's capacity.
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is that so? why? so i guess now my battery's capacity has lessened. damn the article.
have drained my battery to 1% and charged it to 100%. let's see how it goes from here..

good subject for discusion. WM user or not the battery life and the tricks of LION only a few knows.
1.i have two batteries for my HTC. he original battery and one with 2800mAh. Does my phone cofused if i change tha batteries aternately?
2. if ai want to work with my phone for hours is it better to connect it with the charger?
3. Wich kind of charging is better? with USB cable from pc or wall charger.

I have the option in my BIOS for my laptop which says an 80% charge will prolong the lifespan of the battery.
Batteries must undergo a fair bit of research (for environmental impact reasons if nothing else!) and to have such a bold statement to me indicates that its an obvious fact to battery researchers.
Given ive lay in bed this morning messing about on facebook and setting up rss feeds on my phone and emptied a full battery I dont think Id ever stop charging at 80%. Ill just buy another battery!

i really doubt cold weather improves battery life, numerous times my family and I brought electronic products to cold countries and the Battery life always drops at a much quicker rate

dan138zig said:
is that so? why? so i guess now my battery's capacity has lessened. damn the article.
have drained my battery to 1% and charged it to 100%. let's see how it goes from here..
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You are taking what i said out of context.
What I'm saying is that IF your battery had a memory effect as the original article claimed, then charging the battery to only 80 will create a memory at 80, which would be worse for your battery. I'm merely trying to point out an inconsistency in there article.
However, I went on to say that li ON batteries do not have a memory effect. So more relevant to the real world is the fact that our batteries will not experience memory as claimed by the article.

Two main things kill lithium batteries, heat and time as they promote deposits forming in the electrolyte, which reduces the capacity of the battery.
So, buying a "spare" battery at the time you buy a phone with a plan on using it when the original battery starts to fail is a bad idea as the spare battery would be slowly deterorating on the shelf.
Deep charges rather than top up charges are bad as they produce more heat inside the battery, although doing it if your battery doesn't seem to be holding it's chage is a good idea as it should recalibrate the phone's battery level software.

To paraphrase the old saying, " blogs and opinions are like a##holes, everyone has one "
I have followed the links in this thread and so far I have just read unsubstantiated opinion.
I have used " cordless " electronics for most of my life and have used all kinds of batteries extensively as well as talked to company reps and battery " experts ".
Nickel Cadmium batteries had memories. The batteries had to be conditioned and fully charged and discharged. The new Lithium Ion batteries were advantageous , not only because they held a bigger charge and lasted longer, but also because they have NO memory. The latest example being, I regularly charged my Tilt battery to all levels of charge. Mostly 100% everyday and ran it down to 5% most times before charging it again. I used it a lot and charged it a lot. and it lasted 2 yrs.
The only difference I have really noticed in batteries has nothing to do with the way you charge it. It has to do with " getting what you pay for " I have had quality batteries really show their quality and $ 12 batteries give me up to and only my $12 worth.

Charging Lithium Ion Batteries to 80%
denco7 said:
To paraphrase the old saying, " blogs and opinions are like a##holes, everyone has one "
I have followed the links in this thread and so far I have just read unsubstantiated opinion.
I have used " cordless " electronics for most of my life and have used all kinds of batteries extensively as well as talked to company reps and battery " experts ".
Nickel Cadmium batteries had memories. The batteries had to be conditioned and fully charged and discharged. The new Lithium Ion batteries were advantageous , not only because they held a bigger charge and lasted longer, but also because they have NO memory. The latest example being, I regularly charged my Tilt battery to all levels of charge. Mostly 100% everyday and ran it down to 5% most times before charging it again. I used it a lot and charged it a lot. and it lasted 2 yrs.
The only difference I have really noticed in batteries has nothing to do with the way you charge it. It has to do with " getting what you pay for " I have had quality batteries really show their quality and $ 12 batteries give me up to and only my $12 worth.
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I have a Nissan Leaf. It is clear that the engineers have spent a LOT of time thinking about how to maximize the life of the battery in the car. One of the options the car come with is to ALWAYS charge the batteries to 80%. In fact, they've gone as far as to add a button on the dashboard to override that setting in cases where a 100% charge is needed. According to the documentation that comes with the car, this is the single most important step to prolonging battery life. Next is frequent charges. Next is monitoring battery temperature which is constantly shown in a BIG display on the dashboard. In general, a good way to think about a lithium ion battery is that over its life you're trying to maximize the amount of power stored and then subsequently removed from the device. From the research I've done, if the "charging/discharging life" of the battery were cycles that swung from 100% to 0% you might get X kwHrs of power "moved" through the battery, yet if you were to limit charges to 80% and constantly charge it after each use, you could expect at least 2X! So it's a big deal. I live in Bellevue, Washington which has a very mild climate and have put 26,000 miles on this car in the last 2 years, making mostly small 3-to-20 mile trips, and I routinely charge the car when I pull into the garage, and would estimate that the battery has been charged well over 1000 times. To date, there is no detectable loss in battery capacity; the first indication of which would appear on the car's instrumentation when just over 4% of the charging capacity of the car has been lost.

My Sony VAIO Pro 13 actually offers the 80/20 option in Power Settings. However, I do not use it.

[Q] Does hot swapping batteries kill their life over time?

When I first got my Galaxy S3 (Verizon) the OEM battery lasted at least a good 9 or 10 hours, usually plenty to last the day. But I wanted more than that so I got a pack of 2x QCell 2300mAh batteries for cheap on amazon, with one of the wall chargers that you pop the battery into. That was July of last year and I promptly lost one of the batts at school, so in May of this year I got another pack of 2 batts, this time EZOPower, 2100mAh.
Both brands worked pretty well while I had them and I would generally just start the day taking my GS3 off the charger and putting the extra battery in my pocket, and at ~8pm or so I'd switch them out and have more than enough for the rest of the day, and some for the next day if I didn't make it home for some reason that night.
But recently that time to switch has been creeping down earlier and earlier, and lately I've noticed I wake up to the battery icon showing the circle but no percentage (just switched from AOSP to Pacrom, dunno if that makes a difference) and when I take it off it's about 95%. When I switch batts, which is now at about 2 or 3pm if I wake up at 10, the second one (coming off the cheap battery-only wall charger) is at 75% or thereabouts and each lasts less than 5 hours.
Attached are my stats from the other day. I keep all my radios on all day usually but lately I've been having to selectively put it on airplane mode whenever I can afford to, if I want to have enough juice to last through the evening. This sucks. I know batteries die over time but I've literally had these ones for a few months and they're terrible already. Is it because of my hot swapping habits? Does that drive down the battery life over time, or is it something to do with how android pegs the amount of juice left on each battery? Is there a way to wipe the battery stats, or would that even help? There used to be an option for it in CWM but I looked today and I suppose it's gone. I'm not sure what I'm doing wrong but I've never had battery life this bad on any phone.
tl;dr bought a pair of non-OEM batteries with a wall charger, been hot-swapping them for more power throughout the day, but in just a few months their life is approaching nil. What am I doing wrong?

Bump. Anyone knowledgeable on this? I'm pretty sure it could apply to just about any phone and I know plenty of other people do the same thing I do with these battery pairs on Amazon so this would be useful for progeny.

Do you leave them in the charger until you need them? Usually, the longer a battery charges while it's fully charged, the more the total charge will diminish. So, the longer you keep it charging more than it needs to, the faster the battery dies out. Also, when you get a new rechargeable battery, or even a new phone or tablet with a rechargeable battery in it, the first thing you should do is use it till it's drained. Don't immediately plug it in to the charger. Keep in mind, though, that no matter what you do your batteries will diminish. Cheaply made batteries will diminish faster than higher quality ones, so that may attribute to how fast your batteries are dieing.
I could be wrong, though.

I actually do keep it on the charger long after it's charged. And I have heard that before - but don't most chargers have a built in feature that cuts off the current once the battery is fully charged?
Anyway I'm not sure that's the sole reason for the batteries being so ****ty. Although idk, I also could be wrong, lol.

Charge and Discharge Cycles

How many charge/discharge cycles should I expect to get from my S6?
I got the phone in April, and since then I have used it for both business and private use.
I charge it overnight wirelessly, take it to work fully charged, then discharge and recharge it twice whilst at work (using the Samsung charger that came with it), then put it on charge for a 3rd time when I get home ready for the next day.
Fast forward 9 months and already I am seeing reduced battery life... Is this to be expected from 3 charge/discharge cycles per day, 6 days a week?
I've never seen this as a problem until now, as all my phones have either had removable batteries, or were only on 12 month contracts and were replaced before the battery became too worn.
Is it worth trying to get a battery replacement under the 12 month warranty before it runs out?

Big_Rich_1983 said:
Fast forward 9 months and already I am seeing reduced battery life...
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please clarify what you mean by "reduced battery life". Any phone will suffer reduced battery life to some degree after 9 months.
How low do you let the battery go before charging? Some say it's not good to constantly recharge when the battery is not low (above 50%)? Others say that doesn't apply to newer phones with better battery tech. I don't know.

HKSpeed said:
please clarify what you mean by "reduced battery life". Any phone will suffer reduced battery life to some degree after 9 months.
How low do you let the battery go before charging? Some say it's not good to constantly recharge when the battery is not low (above 50%)? Others say that doesn't apply to newer phones with better battery tech. I don't know.
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I generally run it down to 15% when the battery warning comes on... Very rarely to 5% when the critical warning comes on.
When I take it off charge, after about half an hour of screen time, it's down to 80-85 already, then I can get about another 2 hours of heavy use and constant screen time before it's dead again.

Big_Rich_1983 said:
How many charge/discharge cycles should I expect to get from my S6?
I got the phone in April, and since then I have used it for both business and private use.
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Read somewhere reliable some time back that it's somewhere between 500-600 cycles before you see any degradation.. And I think there's something in the warranty which covers reduced battery life within 1st year provided you can prove it which basically means very rare!

Question Poll: do you use the 85% charge limit?

Do you use the 85% charge limit?

i personally think that 85% is BS i have had god knows how many phone all charged to 100% every single night and ZERO! issue. and limiting this phone specially to 85 is a big cut in the hours you will get.

Not a chance. I'd hate this phone if it only charged to 85%.

I Use it all the time. 85% is enough Juice for one workday and i simple want the battery to last as long as possible. I have had bad experience with batteries dying after ~3 years.
The 85% Rule is no BS. You also have to keep an eye on minimal SOC and never go under 10% to avoid unnecessary battery degradation. With that your battery will perform according to the specs (~700 cycles until 80% SOH, modern smartphone batteries). Otherwise it will suffer and that reduces cycle life. This is simply the state of current lithium battery tech.

From my pov, a full day usage requires 100% of charge because some of them cannot charge the phone while they are outside the whole day.

I have wireless chargers almost everywhere, so when my phone is not being used it's normally sitting on a charger. That means that it very rarely uses much charge, so charging to 85% is fine by me. If I knew that I was going to be away from a charger for a protracted period, then I'd probably charge to 100% beforehand.
I can't get too excited about battery management. If I need to buy a new battery for my phone at some point in the future (it has never happened yet...) then that's what I'll do.

i use 85% because i have quick carger in my car and it charge all the time.
at home I have wireless charger and when i need i put it.

I tried it for a few weeks and instead of having 80% leaving work I was at 50%, not really worth it since I'll probably have a new phone in six months. It was too much of a headache stressing about battery life without the phone fully charging.

No, I charged to 100%.

Question Charging battery on the first days of usage - help

Hi!
I have a question.
My S22 Ultra will arrive this week and I don't know how to charge on the first couple of days/weeks.
There is the option to protect the battery and don't charge over 85%. should I use this option on these first days or charge it until 100%????
On my daily basis perhaps I'll use that option, what do you think?
Thanks a lot.

i keep it at 85% setting ever since it was introduced

PLEASE HELP!!!

Deiota77 said:
Hi!
I have a question.
My S22 Ultra will arrive this week and I don't know how to charge on the first couple of days/weeks.
There is the option to protect the battery and don't charge over 85%. should I use this option on these first days or charge it until 100%????
On my daily basis perhaps I'll use that option, what do you think?
Thanks a lot.
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Just charge it normally. You'll definitely need to have it on the charger during the initial setup.

Deiota77 said:
Hi!
I have a question.
My S22 Ultra will arrive this week and I don't know how to charge on the first couple of days/weeks.
There is the option to protect the battery and don't charge over 85%. should I use this option on these first days or charge it until 100%????
On my daily basis perhaps I'll use that option, what do you think?
Thanks a lot.
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You can use it straight from the go and not worry about anything.
My tired and true method when I first get a new phone is by calibrating the battery to run for optimal usage. I let the battery drain the first time until the phone shuts off and then charge it to 100%. I do this again one more time. After that I just charge it to 100% and let it drain and top up however and whenever I feel like it.
There's a couple of reasons for this. First battery life isn't a strong suit for this phone unlike say an iPhone 13 pro max so I'm not going to waste my time running towards a charger all the time. Secondly, the benefits of charging between 75-85 percent and 20-25 percent is negated or lost on me because I'll most likely move on to a new phone by the time the extra battery life that I've managed to squeeze out can be taken advantage of. Now if you're likely the type of person who's going to hold on to his phone until it dies or will be willing to change out the battery to continue using it, then by all means go ahead and toggle the option and follow that road..
Hope this helps..

Plug it in, charge, use it - then plug it in again etc... smartphones aren't made to last forever, after a few years they all become an obsolete junk - that's my personal opinion, you can follow any charging routines you like.

Minimum start charge battery temperature is 72F, 82-90F is better.
Never start charging if below 40F.
Best not to drain past 20%, 30% is better.
72% is a better top off number.
Regardless of how much you charge it, observe the minimum start charge temperature.
Once a battery has reached 80% of it's new capacity it is degraded and should be replaced to prevent a failure which can heavily damage the phone.
A degraded Li is more likely to fail.
Any battery swelling (rear cover bulge) is a failure, do not charge, replace asap. A failure can happen at any time in the battery's life cycle and they can happen fast.
I now replace my N10+ batteries every 1-2 years, routine maintenance.