Is it bad to completely drain the battery? - Galaxy S II Q&A, Help & Troubleshooting

I've come across some people that say the GS2 battery should not be drained completely since for this type of battery it's not good.

lckh said:
I've come across some people that say the GS2 battery should not be drained completely since for this type of battery it's not good.
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http://www.google.com/search?q=Is+it+bad+to+completely+drain+a+lithium+ion+battery?

ctomgee said:
http://www.google.com/search?q=Is+it+bad+to+completely+drain+a+lithium+ion+battery?
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Pants - is the only way to describe that post, false info.
It does no harm at all to fully discharge, more problems are caused by giving regular, short charges, than 1 long full charge so i wouldnt believe that.
He also says to charge it 8-10 hours, that total rubbish as well, these batteries dont need 8-10 hours to prime, on average 3-4 hours for a full charge is more than adequate.
I think few year back batteries were far inferior and did indeed need longer charging periods, but not any more, and if ya flash roms a lot and need to calibrate your battery after flashing to a new custom rom indeed part of the calibration process is completely running down the battery, my s2 is well over a year old and has been drained flat many a time and i still get 14 - 20 hours out of it on average, which is damn good for any smart phone these days, That post is on a HTC Thread by the way, Htc notoriously have batteries with a crappy life span, i had a wildfire s, used to get about 6 hours out of the battery.

I don't think that's true.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries

graemeg said:
ctomgee said:
http://www.google.com/search?q=Is+it+bad+to+completely+drain+a+lithium+ion+battery?
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Pants - is the only way to describe that post, false info.
It does no harm at all to fully discharge, more problems are caused by giving regular, short charges, than 1 long full charge so i wouldnt believe that.
He also says to charge it 8-10 hours, that total rubbish as well, these batteries dont need 8-10 hours to prime, on average 3-4 hours for a full charge is more than adequate.
I think few year back batteries were far inferior and did indeed need longer charging periods, but not any more, and if ya flash roms a lot and need to calibrate your battery after flashing to a new custom rom indeed part of the calibration process is completely running down the battery, my s2 is well over a year old and has been drained flat many a time and i still get 14 - 20 hours out of it on average, which is damn good for any smart phone these days, That post is on a HTC Thread by the way, Htc notoriously have batteries with a crappy life span, i had a wildfire s, used to get about 6 hours out of the battery.
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My post is full of false info? The one linking to direct Google search of the OP's question? Interesting.

ctomgee said:
My post is full of false info? The one linking to direct Google search of the OP's question? Interesting.
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Hmmmmmm, no, you didnt start the thread, i was replying to the starter of the discussion, not yours.
More importantly, where is your link meant to point, coz from what i can see it only points to a google search and not to any specific document, unlike donalgodon who posted a very interesting and intriguing link indeed with so much info

graemeg said:
Hmmmmmm, no, you didnt start the thread, i was replying to the starter of the discussion, not yours.
More importantly, where is your link meant to point, coz from what i can see it only points to a google search and not to any specific document, unlike donalgodon who posted a very interesting and intriguing link indeed with so much info
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Which was actually one of the results of the google search, if you bothered to look.
I was trying to impart the fact to the OP that he could easily find this info himself.
Also, if you were replying to him, then why did you quote my post, saying "Pants - is the only way to describe that post, false info"? Context is important.

ctomgee said:
Which was actually one of the results of the google search, if you bothered to look.
I was trying to impart the fact to the OP that he could easily find this info himself.
Also, if you were replying to him, then why did you quote my post, saying "Pants - is the only way to describe that post, false info"? Context is important.
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aBSOLUTLEY, QUOTING YOURS WAS INDEED AN ERROR ON MY BEHALF, SPOSE DUE TO TIRED EYES SO APOLOGIES IF THAT CONFUSED YOU INTO THINKING I WAS MEANT TO QUOTE YOU, WAS INTENDED FOR THE ORIGINAL THREAD STARTER.
See what i mean, just realised i hit caps lock instead of shift, hmmmm, oh also yes i agree completely, google is completely the place to look so point taken, its suprising what you can ask google and still get an answer, i dont think some people realise that if they have a question in mind, then the likelihood is, someone else already asked it, yet they still dont google it, or maybe its just down to laziness that people dont goole anymore.

graemeg said:
aBSOLUTLEY, QUOTING YOURS WAS INDEED AN ERROR ON MY BEHALF, SPOSE DUE TO TIRED EYES SO APOLOGIES IF THAT CONFUSED YOU INTO THINKING I WAS MEANT TO QUOTE YOU, WAS INTENDED FOR THE ORIGINAL THREAD STARTER.
See what i mean, just realised i hit caps lock instead of shift, hmmmm, oh also yes i agree completely, google is completely the place to look so point taken, its suprising what you can ask google and still get an answer, i dont think some people realise that if they have a question in mind, then the likelihood is, someone else already asked it, yet they still dont google it, or maybe its just down to laziness that people dont goole anymore.
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Mine was a rhetorical question, but it's all good, dude.

Lol, short version: Depending on the battery type you will want to drain it completely before charging or never drain it completely. Let it charge fully overnight or it only needs a few hours.
Seriously, do some reasearch on batteries. Figure out what types there are, how they are different, and what makes them different. each has advantages and disadvantages.
Every battery type is a little different. For our phones will be different than for your rechargable nicad batteries at home, or the batteries in your remote control vehicles.
Bottom line: We COULD tell you, but that would be defeating the purpose. Instead we are pointing you in the right direction to acquire the knowledge yourself. Happy hunting! let us know how it works out!

In simple, it actually causes more harm discharging the battery to empty.
There is alot of do's and donts to preserve the battery,
Info:
The Li‑ion charger is a voltage-limiting device that is similar to the lead acid system. The difference lies in a higher voltage per cell, tighter voltage tolerance and the absence of trickle or float charge at full charge. While lead acid offers some flexibility in terms of voltage cut‑off, manufacturers of Li‑ion cells are very strict on the correct setting because Li-ion cannot accept overcharge. The so-called miracle charger that promises to prolong battery life and methods that pump extra capacity into the cell do not exist here. Li-ion is a “clean” system and only takes what it can absorb. Anything extra causes stress.
Most cells charge to 4.20V/cell with a tolerance of +/–50mV/cell. Higher voltages could increase the capacity, but the resulting cell oxidation would reduce service life. More important is the safety concern if charging beyond 4.20V/cell. Figure
Discharging:
Li-ion should never be discharged too low, and there are several safeguards to prevent this from happening. The equipment cuts off when the battery discharges to about 3.0V/cell, stopping the current flow. If the discharge continues to about 2.70V/cell or lower, the battery’s protection circuit puts the battery into a sleep mode. This renders the pack unserviceable and a recharge with most chargers is not possible. To prevent a battery from falling asleep, apply a partial charge before a long storage period.
Battery manufacturers ship batteries with a 40 percent charge. The low charge state reduces aging-related stress while allowing some self-discharge during storage. To minimize the current flow for the protection circuit before the battery is sold, advanced Li-ion packs feature a sleep mode that disables the protection circuit until activated by a brief charge or discharge. Once engaged, the battery remains operational and the on state can no longer be switched back to the standby mode.
Do not recharge lithium-ion if a cell has stayed at or below 1.5V for more than a week. Copper shunts may have formed inside the cells that can lead to a partial or total electrical short. If recharged, the cells might become unstable, causing excessive heat or showing other anomalies. Li-ion packs that have been under stress are more sensitive to mechanical abuse, such as vibration, dropping and exposure to heat.
And may i point out, this is a community, People ask questions and peoples feedback, the web is not always correct and nor is the information you find.
It takes more effort to argue with someone and to point someone in the right direction, instead of just answering there question.
We have all been New here once before.

dave7802 said:
In simple, it actually causes more harm discharging the battery to empty.
There is alot of do's and donts to preserve the battery,
Info:
The Li‑ion charger is a voltage-limiting device that is similar to the lead acid system. The difference lies in a higher voltage per cell, tighter voltage tolerance and the absence of trickle or float charge at full charge. While lead acid offers some flexibility in terms of voltage cut‑off, manufacturers of Li‑ion cells are very strict on the correct setting because Li-ion cannot accept overcharge. The so-called miracle charger that promises to prolong battery life and methods that pump extra capacity into the cell do not exist here. Li-ion is a “clean” system and only takes what it can absorb. Anything extra causes stress.
Most cells charge to 4.20V/cell with a tolerance of +/–50mV/cell. Higher voltages could increase the capacity, but the resulting cell oxidation would reduce service life. More important is the safety concern if charging beyond 4.20V/cell. Figure
Discharging:
Li-ion should never be discharged too low, and there are several safeguards to prevent this from happening. The equipment cuts off when the battery discharges to about 3.0V/cell, stopping the current flow. If the discharge continues to about 2.70V/cell or lower, the battery’s protection circuit puts the battery into a sleep mode. This renders the pack unserviceable and a recharge with most chargers is not possible. To prevent a battery from falling asleep, apply a partial charge before a long storage period.
Battery manufacturers ship batteries with a 40 percent charge. The low charge state reduces aging-related stress while allowing some self-discharge during storage. To minimize the current flow for the protection circuit before the battery is sold, advanced Li-ion packs feature a sleep mode that disables the protection circuit until activated by a brief charge or discharge. Once engaged, the battery remains operational and the on state can no longer be switched back to the standby mode.
Do not recharge lithium-ion if a cell has stayed at or below 1.5V for more than a week. Copper shunts may have formed inside the cells that can lead to a partial or total electrical short. If recharged, the cells might become unstable, causing excessive heat or showing other anomalies. Li-ion packs that have been under stress are more sensitive to mechanical abuse, such as vibration, dropping and exposure to heat.
And may i point out, this is a community, People ask questions and peoples feedback, the web is not always correct and nor is the information you find.
It takes more effort to argue with someone and to point someone in the right direction, instead of just answering there question.
We have all been New here once before.
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Indeed, not everything on the web is correct.
But may I point out that all you did was copy and paste text from this page, which donalgodon linked in post 4, and again, I feel I must point out, was actually one of the results in the Google search I linked him to.
The point I was trying to make, and seems lost on you, is teaching people how to look for stuff on their own. No one should just expect to be spoon-fed information. That is lazy to just post a question on a forum, sit back, and watch the answers roll in. You should do your own legwork and research.
As the old adage states: give a man a fish, and you feed him for that day. Teach a man to fish, and he is fed forever.

Related

Use Touch Pro without Battery in

Hey,
So I used to have the Titan. Often I would take out the battery and just use the phone without it in *edited* while plugging into the wall, in order to save the battery for later....or to avoid the battery from over heating and shutting down services on the phone.
Pretty simple:
Is there anyway to program the phone to stay on with the battery out *edited* with the wall charger in? Seems like if on the Titan you could do it, here you should be able to as well?
Edited for xander
just because you were high and seeing stars doesnt mean you can operate a phone with no power unless you have a wall charger. although you failed to mention that so this thread should be kaput.
the above reply was almost as bad as the original thread post.
giggly
I definitely should have read over what I was about to post.
anyhow, any solutions?
Mine works just fine without the battery in if I plug it in......... no mod needed??
You do realize that once the battery is completely charged it is no longer charging. Just about EVERYTHING Li-Ion is "smart charged."
The batteries would burst into flames if continuously charged.
I have had a VERY low battery (5% or lower) and plugged into a 500ma power supply (typical USB charger, not HTC factory) and while really taxing the phone (streaming skyfire flash videos back when Hulu worked) and it would only charge the phone 10 percent in about 20 minutes. Sometimes it seemed it wasn't charging at all. The phone is really sucking some current, cellular radio downloading large amounts of data, processor is blazing running skyfire.
Now with the HTC factory charger being a 1000ma (1A) power supply it could obviously supply enough power for the TP at "full demand."
Goes back to the original question.
WHY?
It isn't serving any benefit. Li-Ion does not have a charge "memory" like old NiCd batteries or NiMh. Yes there are a certain amount of charges the battery can take but again, the phone is a smart charger. Once the battery is at full capacity (you want a charged battery right?) it no longer is charging. There is no battery degredation occuring.
to simply answer the op and not beat him to death with words, there is an easy answer to the question... no, there is no software to be able to do what you want for 2 reasons. one, there is extreamly low demand for the application. people here don't generally spend a week or 2 making a program to make one person happy. they'll do it for a hundred people though. two, i could be wrong about this reason but i don't believe that the hardware will allow it. it's designed to have the electricity run to the battery first, then the phone draws the energy from the battery for use. to my knowledge the phone doesn't have a way to be able to use the energy from the charging port directly. sorry champ, the only way that you are going to get this done is with an electrical engineering degree, soddering iron, and the circuit blueprints themselves.
to simply correct the poster aboive and still think about beating him to death...
yes it is possible, no you do not need extra software... and yes the hardware supports it... Im sorry I personally don't know how to do [email protected]: But if you post over @ PPCGeeks im sure they'll figure it out for ya.
I know it's possible for two reasons... If your phone is plugged Via USB in the bootloader, you may take the battery out. Also, on a ROM that I had installed previously my phone froze for about 2 mins and the battery was blazing so i took it out... To my surprise it was still on (i was tethering) and working perfectly! ZOMG...I love people who answer unknowingly...
For the person who said the smart remark about the lithium battery, im sure the OP knew that, but requires the phone to work with the battery off after he was done charging it... This would let him tether or do what it is that he needs endlessly without worrying about the battery overheating...
In other words, if you're not here to help, then sthu... Dont ***** about his question, dont insult him... Either help, or move on...
Tilde88 said:
For the person who said the smart remark about the lithium battery, im sure the OP knew that, but requires the phone to work with the battery off after he was done charging it... This would let him tether or do what it is that he needs endlessly without worrying about the battery overheating...
In other words, if you're not here to help, then sthu... Dont ***** about his question, dont insult him... Either help, or move on...
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Uh, I tell you what there buddy. I'll take your post seriously when you can learn some grammar. For all I know I'm talking to a 12 year old know it all who ALSO doesn't know how to keep his mouth shut.
I WAS offering help, by telling him that there is NO POINT in removing the battery. I implied NO disrespect with my post.
If you are referring to problems with certain software causing the phone to overheat and restart/lock up... again that has NOTHING to do with the battery. For example WMWifiRouter, or streaming high kbps video.
The wifi/cellular radio/processor is what is generating the heat.
If you're not charging the battery (IE battery=100%) then there is NO HEAT GENERATED. The heat is not coming from the battery.
poor_red_neck said:
Uh, I tell you what there buddy. I'll take your post seriously when you can learn some grammar. For all I know I'm talking to a 12 year old know it all who ALSO doesn't know how to keep his mouth shut.
I WAS offering help, by telling him that there is NO POINT in removing the battery. I implied NO disrespect with my post.
If you are referring to problems with certain software causing the phone to overheat and restart/lock up... again that has NOTHING to do with the battery. For example WMWifiRouter, or streaming high kbps video.
The wifi/cellular radio/processor is what is generating the heat.
If you're not charging the battery (IE battery=100%) then there is NO HEAT GENERATED. The heat is not coming from the battery.
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haha yea i know my grammar sucks... its cuz im 11teen...
idiot im an english major... just cuz i like to use ellipses doesnt mean ****.
you have to be the biggest dumbass yet... i just said that if you are tethering your battery will heat up... because you are using the clealluer rdaio for teh bndawthd, in whcih intornet youzes kilobits per second...
haha whatever...
what a poor redneck duck
Double Post...
Ok smartass.
Explain to me how tethering your phone with a charger plugged in and the battery already being charged causes the battery to heat up.
Think long and hard about your answer. Go ahead and post with your "mAd tyt3 h4x tyP1ng s|<Illz DAWG!"
I'm a ****ing electrical engineer, with a Masters. Take your poems and books and literature discussion groups and go **** yourself.
Only way that is going to happen is if the phone is consuming more current than the charger can provide.
IE: The phone is consuming 650ma, but a typical USB charger can only supply 500ma. In that case then the even simpler answer is NO you cannot use a charging adapter with no battery plugged in.
If you're a car guy here's an even better analogy.
Your car has an alternator (generates current) and a battery (stores current).
If your car's alternator is rated at 100A, then at a specified RPM your alternator generates 100 amps of current.
However, at idle your alternator may only be generating 40A.
If you're sitting at a traffic light and your headlights are on, heater blower fan is going, window wipers are on, heated seats are on... you're consuming more power than the alternator can provide. So the car is pulling current from the battery. The second you leave the traffic light and accelerate and your engine is spinning fast enough that the alternator can generate enough current to supply the demand and charge the battery.
Easy buddies!
We all are here to share knowledge we have to each other right?
Plz. don't let a small thing cause big problems!
Please!!!!
as hippy-rific as navi_mappers statement is, i have to agree with him. people are getting a little too angry about this. it was a simple question. unfortunatly it has been answered in contradictory ways. one thing has remained true in most posts though: there is little reason to do what he was trying to do. i believe that he can take that and walk with it. there's no reason that we (as educated and intelligent people) need to resort to name calling and slander. i'd like to think that we are a little better than that. so shut up, stop *****ing and answer the mans question with intelligence damn it! i'd expect this kind of stupid crap over at crackberry.com, not here.
thanks
Thanks for those that replied in an appropriate way.
yeah,some may need therapy in this thread...
haha yea i was havin a bad week... my bad guys

[Q] Will an everyday battery charge harm my phone or my battery?

Hello dear members
I'd like to ask if an everyday charge will harm my battery.
It's my first week with my phone, and I can't keep my hands off it
As a result, battery runs out every day!! So I charge it...
Will something happen to the battery?
thanks in advance
This phone has a litium ion battery. They don't have a memory effect but in the first time they need some time to become the full potential. So it doesn't matter if you charge the phone every day.
Sent from my GT-I9100 using XDA App
Thank you so much!!!!
It's a relief
To maintain better battery life it might be a good idea to make sure that u dont fully drain the battery
That shouldn't be a problem the most battery's should have electronic inside to prevent this but I can't guarantee it. You can read also the Wikipedia article about lithium ion batteries it's quite interesting.
Sent from my Nexus S using XDA App
It is better for you to charge daily and often when the battery still has charge and not leave it until the battery is totally flat.
Thanks so much everyone Point taken
I'll never let it fall under 10%.
Well, Battery is average. If it weren't for the 2.3.3 bug, it would rock! In order for it to be normal, I keep ****ting Services.(under Services menu) like Voice talk, SocialHub(which drains a lot of battery) etc
Anyways, thanks to everyone
Sleepycat3 said:
It is better for you to charge daily and often when the battery still has charge and not leave it until the battery is totally flat.
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Isn't it actually opposite, I mean somewhere I heard that if a Full charge is given after a Full drain then the battery gets conditioned (optimized I think), can't remember the source but I do remember the fact.
Sleepycat3 said:
It is better for you to charge daily and often when the battery still has charge and not leave it until the battery is totally flat.
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I'm glad this thread exists. I'm so used to running a battery down to the minimum before charging it that I probably would have been in that habit for my SGS2. I'd actually come here to ask the same question now I've been through my first four or five "full" -> "red" -> "charge to full while off" cycles.
Is it confirmed both from the SGS2 & LION technology point of view to now keep it charged up, even if using only half/quarter charges etc to do so?
My battery is giving me around 40 hours a time so not too bad but I'd like to keep it running as well as I can.......
ithehappy said:
Isn't it actually opposite, I mean somewhere I heard that if a Full charge is given after a Full drain then the battery gets conditioned (optimized I think), can't remember the source but I do remember the fact.
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Nope. Li-ion batteries these days prefer constant top-ups and full drain actually kills it faster. Totally opposite of what people have been taught over years of NiCD battery use that I've got friends who absolutely refuse to charge their iPhones unless it's at 10% or less. Their loss.
ithehappy said:
Isn't it actually opposite, I mean somewhere I heard that if a Full charge is given after a Full drain then the battery gets conditioned (optimized I think), can't remember the source but I do remember the fact.
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No that's only good to do once in a while. Full discharges daily put stress on the cells and wear out li ion batteries quicker.
CarpathianUK said:
I'm glad this thread exists. I'm so used to running a battery down to the minimum before charging it that I probably would have been in that habit for my SGS2. I'd actually come here to ask the same question now I've been through my first four or five "full" -> "red" -> "charge to full while off" cycles.
Is it confirmed both from the SGS2 & LION technology point of view to now keep it charged up, even if using only half/quarter charges etc to do so?
My battery is giving me around 40 hours a time so not too bad but I'd like to keep it running as well as I can.......
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Yes it's common for all lithium ion batteries to charge as often as possible. Its true for all phones on the market today and quite a lot of discussion on this is all around the web.
Also a replacement stock battery for any cell phone today is around 20 dollars, so really you can't do much wrong since its so cheap to buy a new OEM battery replacement.
Thanks for the replies. I think this will catch a few people out so hope the thread doesn't get missed amongst all the other battery ones!
Looks like I'd better change my charging habits!

[Q] Control charging

Hello, is there a way to have the charger connected but only use it as an external power source like on laptops without charging the battery? I use my tablet often near the charger and don't want to start the charging process 5 times a day.
Thanks!
hugo11sk said:
Hello, is there a way to have the charger connected but only use it as an external power source like on laptops without charging the battery? I use my tablet often near the charger and don't want to start the charging process 5 times a day.
Thanks!
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I don't know, but I'm curious why you want this? Did they put a Nickel Cadmium battery in your GT10?
I want this for the same reason as on lenovo laptops. With this feature you can save some charging cycles and the battery would last 1+ years. On my dell with the charging plan same as my p7500 the battery was dead (less than half capacity) after 10 months. And I do not necessarily need my battery charged to 100% all the time..
hugo11sk said:
I want this for the same reason as on lenovo laptops. With this feature you can save some charging cycles and the battery would last 1+ years. On my dell with the charging plan same as my p7500 the battery was dead (less than half capacity) after 10 months. And I do not necessarily need my battery charged to 100% all the time..
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So they did put a Nickel Cadmium battery in your tablet? Those sneaky bastards! I must have gotten lucky--mine has a Lithium ion battery.
No it's Li-Ion, don't really understand why you think that Li-Ion is not impacted at all...
hugo11sk said:
No it's Li-Ion, don't really understand why you think that Li-Ion is not impacted at all...
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Sorry, I'm just having a bit of fun messing with you, but you need to update your understanding of rechargeable batteries.
Ok, no prob I realized that you don't know the answer, can you at least share your opinion why this looks like an unnecessary thing to you and prove it? (link)
hugo11sk said:
Ok, no prob I realized that you don't know the answer, can you at least share your opinion why this looks like an unnecessary thing to you and prove it? (link)
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I think that slack04 is refering to the properties of Li-Ion batteries. These are very different from the older technologies like NiCd or NiMH.
In short ... Li-Ion batteries realy love to be charged all the time. Keeping them attached to a charger all the time or multiple small periods of time will not hurt them.
There are only a few things that will realy hurt Li-Ion batteries:
- time : Li-Ion batteries degrade over time, even if they are not being used. You can expect a Li-Ion battery to work OK for about 2 years. So, never buy second hand Li-Ion batteries or batteries that have been stored in a shop for some time.
- heat : do not keep a Li-Ion battery in a hot place (like your car in the sun) It will severely reduce its usefull lifetime.
- undercharging : If you let a Li-Ion deplete to a too low level, it can be damaged beyond repair. But, our tab will turn itself off way before that low level.
So, just let it charge itself as much as it can.
This is not true for the older technologies. I think that's why lots of people are still thinking that very controlled charging cycles will prolongue the lifetme of their batteries.
Cool, so we can use tab connected to sector all long as we want with ion battery! ?
hugo11sk said:
Ok, no prob I realized that you don't know the answer, can you at least share your opinion why this looks like an unnecessary thing to you and prove it? (link)
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Ha! Here's some proof for you, in a link no less!
slack04 said:
Ha! Here's some proof for you, in a link no less!
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I can recommend that link too
But if you want some more, you can visit the 'battery university'. E.g. this page:
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Thanks a lot for the link, it's interesting reading that the best would be keeping the battery at around 40% charge.
BTW is it a Li-po or Li-ion battery in galaxy tab 10.1?
hugo11sk said:
Thanks a lot for the link, it's interesting reading that the best would be keeping the battery at around 40% charge.
BTW is it a Li-po or Li-ion battery in galaxy tab 10.1?
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Read it again, and don't post stuff that will confuse new folks. Here's a quote from the article:
"The smaller the depth of discharge, the longer the battery will last. If at all possible, avoid frequent full discharges and charge more often between uses. If full discharges cannot be avoided, try utilizing a larger battery. Partial discharge on Li-ion is fine; there is no memory and the battery does not need periodic full discharge cycles other than to calibrate the fuel gauge on a smart battery."
slack04 > I've read the article very well... and I feel that your posts don't add that much value to this thread. maybe you could read it again as well.
Please check the table from wiffeltje's link. It clearly states that at 25C at 40% charge the yearly loss in capacity is 4%, and at 25C 100% charge level it's 20%.
hugo11sk said:
slack04 > I've read the article very well... and I feel that your posts don't add that much value to this thread. maybe you could read it again as well.
Please check the table from wiffeltje's link. It clearly states that at 25C at 40% charge the yearly loss in capacity is 4%, and at 25C 100% charge level it's 20%.
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I don't want to make it even more difficult, but the table you refering too deals with 'storage'. That's a good table to follow if you need to store your device for a couple of months without use. Then it's best to have a 40% charge.
For normal use the simple rule is : keep it connected to the charger whenever possible.
wiffeltje said:
I don't want to make it even more difficult, but the table you refering too deals with 'storage'. That's a good table to follow if you need to store your device for a couple of months without use. Then it's best to have a 40% charge.
For normal use the simple rule is : keep it connected to the charger whenever possible.
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I considered posting this but decided that the OP was a bit thick.

[Q] Stay on charger or drain?

Hey guys
On the weekends I'm usually home and I do use my phone quite a bit..but I'm mostly sitting at my computer doing so.
Is it better for me to keep the phone plugged in or should I be letting it drain? I heard that large drain cycles are not good for the battery and will wear it out faster...I've learnt that with my original Samsung battery...I have an extended one, now.
I've searched around...some people say one thing, others say the opposite...so what's the deal, really?
Thanks,
Elliott
The battery is desinged to be drained, you can always use your device plugged in when you are about to run outta juice.
Sent from the little guy
Right...but if I'm going to be texting constantly on the phone...is it better to just leave the phone on charge while I'm using it, or keep draining it/charging it back up?
As I said, use it.
If battery is low, just charge it while you do.
Sent from the little guy
Thanks.
Anyone else have any info on this?
Elliott
Bump
There was an article on XDA a while ago about the battery in mobile phones.
http://forum.xda-developers.com/showthread.php?t=1168036
Summary:
It doesnt matter if you keep it plugged in or not. It will do no damage to it.
What you shouldn't do with this kind of battery is draining it to 0% like some people suggest. In fact it is better to keep it charged above 40% to maximize the lifetime of your battery.
Here is also an other thread about it.
http://forum.xda-developers.com/showthread.php?t=1914417
Thanks for the threads.
The first and 2nd threads you posted through, seem to contradict each other.
The first thread said
Hence constantly recharging a lithium ion battery does not shorten the battery life more than normal usage would. Avoid letting it sit on empty for too long; instead, keep it charged-up if you can.
Click to expand...
Click to collapse
The second thread said:
Avoid keeping your battery at 100%: Every source I referenced for this guide said the same thing about keeping your battery at a full capacity, but oranageinks.com explains [...]
Click to expand...
Click to collapse
lol, we gotta get a lithium battery Ph.D here
I never let my battery die on me, I only do it once to get rid of fuel gauge (although some say that it fixs it on it own after three days or so) whenever I flash a new ROM.
I always let it frain to 15 % or something like that.
Starholdest said:
Thanks for the threads.
The first and 2nd threads you posted through, seem to contradict each other.
The first thread said
The second thread said:
Click to expand...
Click to collapse
It doesnt really contradict each other. They warn you about heat that is bad for your battery when charged to 100%. Keeping your phone at 100% in a hot enviroment does more damage then having it at 40% in the same enviroment. The same applies to running an app that keeps your cpu running constantly thus heating up your phone.. But in normal circumstances it shouldnt do harm.
It sounds like someone is obsessed about their battery not being at 100% all the time.
Charging and discharging your battery shortens it's life. This is the way it was designed.
Chill, it's just a phone, not an artificial heart
Sent from my digital submersible hovercraft.
Lennyz1988 said:
It doesnt really contradict each other. They warn you about heat that is bad for your battery when charged to 100%. Keeping your phone at 100% in a hot enviroment does more damage then having it at 40% in the same enviroment. The same applies to running an app that keeps your cpu running constantly thus heating up your phone.. But in normal circumstances it shouldnt do harm.
Click to expand...
Click to collapse
Well I think they clearly contradict each other...one says to keep your battery charged up, the other says not to keep it at 100%...
I understand about the heat degrading batteries...but that's another discussion completely.
Anyone else have any opinion?
f-r said:
It sounds like someone is obsessed about their battery not being at 100% all the time.
Charging and discharging your battery shortens it's life. This is the way it was designed.
Chill, it's just a phone, not an artificial heart
Sent from my digital submersible hovercraft.
Click to expand...
Click to collapse
I wouldn't call myself obsessed...I'm just wondering if leaving it plugged in for a good portion of the day will reduce it's life. Because I did that with my original Samsung battery and it's barely usable for me now...just wondering if leaving it plugged in for long periods of time diminished it's life over a year and a half.
I think batteries don't like to be plugged all the time.
For what i've read in the last 4 years nobody knows exactly what's good and what's not for them.
You be the judge.
Sent from the little guy

How To Guide How to limit charging on Pixel 6

With credit to VR-25 from Github:
If you edit these files and put you own values in then your phone will start charging when it drops below 75% and stop when it gets to 80%. (put your own values in, etc.)
I have only tested it briefly but it seems to work for AC and USB charging for me so far. No other apps or tweaks needed.
/sys/devices/platform/google,charger/charge_start_level:75
/sys/devices/platform/google,charger/charge_stop_level:80
EDIT: You need to be rooted to do this, and you need to reapply the settings after reboot.
I have a Tasker action that does this automatically 5 minutes after rebooting.
If only there was a way to use that without root :-S
What would be the purpose for this.
I always charged to a 100% and never had issues on my devices.
I use the adaptive charging overnight and think that will help with battery life.
vandyman said:
What would be the purpose for this.
I always charged to a 100% and never had issues on my devices.
Click to expand...
Click to collapse
If you do some reading you will see that charging over 80% and draining under 20% will significantly shorten the lifespan of your battery. This is important for those of us that have devices not sold in our country so getting replacement batteries would be very difficult and expensive. I have phones that are more than 9 years old and still going fine if charged like this.
Galaxea said:
If you do some reading you will see that charging over 80% and draining under 20% will significantly shorten the lifespan of your battery. This is important for those of us that have devices not sold in our country so getting replacement batteries would be very difficult and expensive. I have phones that are more than 9 years old and still going fine if charged like this.
Click to expand...
Click to collapse
If you would have read the correct information on this subject. You would know that this not true for today's battery technology.
This is nothing but a myth.
You will have a better chance looking for Bigfoot.
Why waste 40% of your battery use....
vandyman said:
If you would have read the correct information on this subject. You would know that this not true for today's battery technology.
This is nothing but a myth.
You will have a better chance looking for Bigfoot.
Why waste 40% of your battery use....
Click to expand...
Click to collapse
On the contrary. The most recent phones attempt to limit the time that they spend at 100% exactly because it's so bad for battery longevity. Having options like the OP's approach just gives users more flexibility, should they want more control than, in this case, Google's adaptive/AI approach.
And it's not 'wasting' 40% of the battery. Keeping between 80% and 20% just optimizes battery service life during those days you only actually only need 60% of it's possible capacity. When working from home that's often the case for me. I actually tend to use ~30% of the battery in a day. Better to charge it up daily to about 70% than all the way to 100% and let it go down to 10% over 3 days. If it's easy to do, why not?
Not quite the same, but EV design also has their batteries normally operating in the middle range so as not to compromise their service life...
Definitely not myth. The only myth is that lithium cells exhibit a memory effect and need to be deep discharged and fully recharged periodically to maintain their capacity. It's actually bad for them to do this! The only reason to do this would be in an attempt to recalibrate the software for the battery level gauge (at the cost of a little damage to the battery each time you do that).
vandyman said:
What would be the purpose for this.
I always charged to a 100% and never had issues on my devices.
Click to expand...
Click to collapse
Most folk don't notice reduction in battery capacity until it becomes severe. For example, a friend claimed it wasn't a problem charging his iPhone to 100% ritually. When he checked the OS, it said his battery capacity was 80% of what it was when new. He said he hadn't noticed it affect how long the phone lasted.
If your usage is such that you can predict how much capacity you need, you can choose to charge to 100% only those times you will actually need that capacity. Other times you can look after the battery so it's able to actually give near on 100% for longer, those times it's important to you.
Others who keep their phones a short time or are comfortable with the cost & inconvenience of a battery replacement, or simply don't care, don't have to worry....
WibblyW said:
On the contrary. The most recent phones attempt to limit the time that they spend at 100% exactly because it's so bad for battery longevity. Having options like the OP's approach just gives users more flexibility, should they want more control than, in this case, Google's adaptive/AI approach.
And it's not 'wasting' 40% of the battery. Keeping between 80% and 20% just optimizes battery service life during those days you only actually only need 60% of it's possible capacity. When working from home that's often the case for me. I actually tend to use ~30% of the battery in a day. Better to charge it up daily to about 70% than all the way to 100% and let it go down to 10% over 3 days. If it's easy to do, why not?
Not quite the same, but EV design also has their batteries normally operating in the middle range so as not to compromise their service life...
Definitely not myth. The only myth is that lithium cells exhibit a memory effect and need to be deep discharged and fully recharged periodically to maintain their capacity. It's actually bad for them to do this! The only reason to do this would be in an attempt to recalibrate the software for the battery level gauge (at the cost of a little damage to the battery each time you do that).
Click to expand...
Click to collapse
This all maybe good if you are planning on keeping your device for a few years.
Most people buy a new device every other year. If not once a year.
... and if you really want to knacker the battery, heat it up too!
Worst case scenario - using a sat nav app on your phone in the car on a hot day with the phone plugged into a car adaptor. It's going to be sitting there at elevated temperatures, possibly with the sun shining on it, whilst being kept at 100% battery....
I'm only a customer (and have no other affiliation) and like to tinker, so I got one of these for use in the car to limit temperature when charging and limit max charge. Not cheap, but ok compared with the cost of the phone https://chargie.org/
I'm sorry, but at the snails pace this phone charges I'd be very surprised if charging it to 100% every night will make any noticeable difference in the long run. I had a Xiaomi Mi10 Ultra with 120W fast charger. That phone used to charge from 0% to full in like 20 minutes. Now that's one way to quickly kill your battery.
The Pixel uses your alarm to adaptively charge the battery so it should never overcharge it anyway. I'd much rather us all of my battery than use it only between 20 and 80% just for it to last a little longer.
The files are overwritten on reboot so I created a Tasker task to write the values on reboot each time.
Biggenz said:
I'm sorry, but at the snails pace this phone charges I'd be very surprised if charging it to 100% every night will make any noticeable difference in the long run.
Click to expand...
Click to collapse
On what basis? All the research and tests are based on charge level not charge rate. Fast charging potentially just makes it worse...
But at the end of the day it's your phone. You'll charge it in whatever way works for you.
I feel like this post sort of misses the point. It clearly is aimed at those intending to keep their phones >1yr, it is stated explicitly.
I'm not rooted right now, so I've been using the AccuBattery app. One of the things it does it gives a notification every few minutes when the battery is at 80% or above so that you can physically unplug the phone from the charger. Obviously having this done automatically would be better, but I've been surprised at how well the notifications have worked in my case. Plus, I can always leave the phone plugged in if I know I need a full battery for some reason (ie a long day away from any charging source).
Galaxea said:
With credit to VR-25 from Github:
If you edit these files and put you own values in then your phone will start charging when it drops below 75% and stop when it gets to 80%. (put your own values in, etc.)
I have only tested it briefly but it seems to work for AC and USB charging for me so far. No other apps or tweaks needed.
/sys/devices/platform/google,charger/charge_start_level:75
/sys/devices/platform/google,charger/charge_stop_level:80
Click to expand...
Click to collapse
Dumb question but what did you use to write values into those files? Did you use a text editor (with root access) or just termux or something? I tried with the built in MiX text editor but it seems to choke once I open up the file.
Gibsonflyingv said:
Dumb question but what did you use to write values into those files? Did you use a text editor (with root access) or just termux or something? I tried with the built in MiX text editor but it seems to choke once I open up the file.
Click to expand...
Click to collapse
I used FX File Explorer (root option). Look for the #. SYSTEM (Root).
I was wondering if changing the file permissions after writing to them to read-only would make the changes stick, but I am sure the OS could still overwrite them...??
I wonder if there's a similar variable to tweak at what temperature the phone considers the battery is too hot and stops charging?
Galaxea said:
With credit to VR-25 from Github:
If you edit these files and put you own values in then your phone will start charging when it drops below 75% and stop when it gets to 80%. (put your own values in, etc.)
I have only tested it briefly but it seems to work for AC and USB charging for me so far. No other apps or tweaks needed.
/sys/devices/platform/google,charger/charge_start_level:75
/sys/devices/platform/google,charger/charge_stop_level:80
Click to expand...
Click to collapse
Did a bit of testing and it works fine. A few things I noticed:
1. Doesn't survive reboot. Now that I've set up MiX with pinned folders, I can make the change in seconds. Need to sit down and read through the acc documentation because AccA doesn't work. Would love to have an automatic solution. Miss my old Battery Charge Limit.
2. charge_start doesn't seem to matter. After all, if charge_start is set to 75 and the phone is at 70%, it shouldn't charge. But it does. I've kept mine at 0.
3. Point #2 is kinda beside the point, though, because charge_stop will stop at the set value and stay there. No noticeable increase in temperature from what I can see. Definitely less than when charging.
4. Still shows as charging rapidly when it hits the level. Is it rapidly cycling charging on and off? Or in a kind of micro-current state? Or this may be a true battery idle situation where all power is drawn from the adapter. Ampere and AccA just show "not charging".
Edit: With a bit of use today, it does seem to act like a normal min/max charge deal, so I set it at 75 start/76 stop. Not sure what was happening at first...maybe something to do with the adaptive charging since I still have that on. Either, way, no complaints. With my use case working from home, I have it plugged in most of the day and it'll only take me about a minute to change charge_stop to 100 when I'm planning to go out all day somewhere away from chargers. Not ideal, but still a big improvement. Changes my rating of the thing from maybe 3.5 stars to 4.5.

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