Older types of rechargable batteries exhibited a 'memory effect' which made it neccessary to completely charge/discharge the battery when using to prevent degradation of the capacity. Modern Lithium-Ion batteries like in the Nexus S do not show this problem and thus it is not necessary to use the battery in complete (dis)charge cycles. In fact on the contrary, it is commonly accepted that both very low and very high charge states accelerate the degradation of the battery capacity (that is why you should store Li-Ion batteries at around 40% charge).
While a low charge state can be simply avoided by charging the device more often, the battery in the Nexus S by default is charged to around 95% capacity and I could not find any app or tweak to stop the charging at a lower capacity. Thus the only way was to use the manual override and pull the cable which is annoying since one had to monitor the charge state.
So I implemented a simple tweak I called Battery Life eXtender (BLX) which can be used to set a limit for the capacity to which the battery will be charged by passing a value between 0 and 101 to 'charging_limit' in '/sys/class/misc/batterylifeextender' (101 by default).
Changes to the source code: http://www.pastie.org/2516542
BUGFIX:
The battery status is set to 'full' once the user defined charging limit is reached.
Bug fix: http://www.pastie.org/2534319
BUGFIX #2:
The charging limit is set to 96 by default which will mimic the behaviour of the stock kernel. Also, the maximum value accepted by 'charging_limit' is set to 96.
Bug fix: http://www.pastie.org/2560599
BUGFIX #3:
1. Made BLX compatible with the 100% charging 'fix'.
2. If the charging limit is set to the maximum charging limit, charging will not be stopped until the interrupt signal is received from the MAX8998 chip.
Bugfix: http://www.pastie.org/2751140
No further patches will be published here. I have set up a git repo for all my tweaks. Each mod has its own branch to keep the tweaks cleanly separated and one can simply pull the latest patches from the corresponding branch.
https://github.com/Ezekeel/GLaDOS-nexus-s/tree/blx
I do not accept donations and since I reached my 50GB limit of free space on SpiderOak, thanks to all of you kind people who got an account using my referral link, I could not ask for more.
Instead if you really want to donate your hard earned money to someone who deserves and needs it, consider donating to the Free Software Foundation at fsf.org: These guys are at the frontline when it comes to keeping Linux free and fighting these greedy bastards who think they are entitled to collect royalties and other fees from Linux users due to some silly patents - and if Linux falls, Android will be next.
Can't wait for Trinity to include this!
Sent from my Nexus S using XDA App
i charge my ns to 100% all the time, i wish that i could charge it even more. lol!
Wow! I am waiting for this for long time!
Sent from my Google Nexus S using XDA Premium App
simms22 said:
i charge my ns to 100% all the time, i wish that i could charge it even more. lol!
Click to expand...
Click to collapse
Yeah, the drawback of course is the shorter battery runtime. If even a fully charged battery still is not enough for you to get over the day, this tweak is not for you. However, I mostly use the Nexus for internet, email and music and for me a fully charged battery last for about 3 days. So in my case when setting the charging limit to let's say 80% that is still plenty of reserves.
Before I wrote this tweak I thought about if it actually makes sense to try and prolong the lifetime of these batteries because they can be easily replaced and are also pretty cheap. However it seemed like a good idea purely from an environmental point of view (even if there is no climate change like Rick PArry totally has convinced me).
Ezekeel said:
Yeah, the drawback of course is the shorter battery runtime. If even a fully charged battery still is not enough for you to get over the day, this tweak is not for you. However, I mostly use the Nexus for internet, email and music and for me a fully charged battery last for about 3 days. So in my case when setting the charging limit to let's say 80% that is still plenty of reserves.
Before I wrote this tweak I thought about if it actually makes sense to try and prolong the lifetime of these batteries because they can be easily replaced and are also pretty cheap. However it seemed like a good idea purely from an environmental point of view (even if there is no climate change like Rick PArry totally has convinced me).
Click to expand...
Click to collapse
i thought about the need to prolong the batterys life too. i thought about how long id be using my phone as a primary device before i get a new one vs the actual life of the battery. i figured id replace the phone before the battery actually died. of course, there is that odd random chance that the battery will die much quicker than expected. my original g1 battery from 2008 is still good, and i abused that phone for a long time. but, there is something else that i didnt think about. there are lots of people in the world that are less fortunate than i am. and they need their devices to last them as long as the devices can because they cant afford getting new ones. and that includes the battery too. they would appreciate something like this. of course, there is that envirenmental thing that you touched upon. less crap destroying our wonderful planet
Ezekeel said:
Yeah, the drawback of course is the shorter battery runtime. If even a fully charged battery still is not enough for you to get over the day, this tweak is not for you. However, I mostly use the Nexus for internet, email and music and for me a fully charged battery last for about 3 days. So in my case when setting the charging limit to let's say 80% that is still plenty of reserves.
Before I wrote this tweak I thought about if it actually makes sense to try and prolong the lifetime of these batteries because they can be easily replaced and are also pretty cheap. However it seemed like a good idea purely from an environmental point of view (even if there is no climate change like Rick PArry totally has convinced me).
Click to expand...
Click to collapse
so it is not for hardcore user? I have to recharge the phone every evening *argh* !
Sent from my Google Nexus S using xda premium
Sounds like Simms is waiting for the Nexus Prime?
simms22 said:
i charge my ns to 100% all the time, i wish that i could charge it even more. lol!
Click to expand...
Click to collapse
Sry for the noob question, but how do u charge it to 100%?
I appreciate your work Ezekeel.
I have one suggestion: Can you make one thread with all your MODs included so that it is not fragmented all over the Android Development forum?
That would be very kind of you.
Fantastic...waiting for this!!
Inviato dal mio Nexus S usando Tapatalk
dinuvali said:
Sry for the noob question, but how do u charge it to 100%?
Click to expand...
Click to collapse
You have to charge the phone with the screen on.
I'd rather wait for this mod to be implemented in kernels, or roms.
W00T ! This is THE mod I was waiting for since I got my Nexus S ! Thanks a lot Ezekeel for all your work !
WOW! Very nice. I'm waiting)
We want it fast!!!!
Accidentally sent from my Nexus S using XDA Premium App
Ezekeel said:
Yeah, the drawback of course is the shorter battery runtime. If even a fully charged battery still is not enough for you to get over the day, this tweak is not for you. However, I mostly use the Nexus for internet, email and music and for me a fully charged battery last for about 3 days. So in my case when setting the charging limit to let's say 80% that is still plenty of reserves.
Before I wrote this tweak I thought about if it actually makes sense to try and prolong the lifetime of these batteries because they can be easily replaced and are also pretty cheap. However it seemed like a good idea purely from an environmental point of view (even if there is no climate change like Rick PArry totally has convinced me).
Click to expand...
Click to collapse
What kind of battery you are using, why my battery can only last 1 day with few calls, message and a couple of hours internet.
brainmaster said:
I appreciate your work Ezekeel.
I have one suggestion: Can you make one thread with all your MODs included so that it is not fragmented all over the Android Development forum?
That would be very kind of you.
Click to expand...
Click to collapse
Totally agreeing to that.
I concur.
nice - but not something I see myself using so one little question in advance: If I use a kernel that has this and I just delete this config file - will my ns behave as if it had never been there?
brainmaster said:
I appreciate your work Ezekeel.
I have one suggestion: Can you make one thread with all your MODs included so that it is not fragmented all over the Android Development forum?
That would be very kind of you.
Click to expand...
Click to collapse
You mean joining all the thread in a single one or creating an additional thread as an index which links to the individual threads?
jaoyina said:
What kind of battery you are using, why my battery can only last 1 day with few calls, message and a couple of hours internet.
Click to expand...
Click to collapse
The stock battery with 3G disabled and CPU freq limited to 800GHz.
gotjazz said:
nice - but not something I see myself using so one little question in advance: If I use a kernel that has this and I just delete this config file - will my ns behave as if it had never been there?
Click to expand...
Click to collapse
The charging limit is set to 101 by default, so as long as you do not set a different limit this tweak will do nothing at all.
Related
Now that the kernel has been unlocked to alow the battery to use the full 4.2-3.0v potential, some people are having issues getting there battery to drain to 3.0 w/o having its protection circuitry kicking in.
Equipment
Multi meter- digita/ analog... doesnt matter, just need to be able to mesure DC voltage downt to atleat 1/10th volt.
Bulb -i personaly use a #194 automotive bulb
Procedure
drain battery as normal untill shutdown.
remove battery
check voltage across the 2 outer lugs ( just for referance )
take bulb, unfold the wire contacts so they stick out, touch them to the outer lugs ( bulb will barely glow its rated for 12v )
ether tape the bulb in place or hold it there ( i just hold it, keeps me from forgetting about it and draining it to low)
recheck votage every few min.
drain it to 2.9-3.0v
reinstall in phone and charge as normal
some batterys may require you to repete it to recondition the protection circuitry.
if you drain it below 2.5v you will need to buy a new battery... YOU HAVE BEEN WARNED!
Awsome thanks!! Do i need to do this everytime i reflash a eom or kernel thats is able to use this feature?
Sent from my SGH-T959 using XDA App
Li-io batterys need to be drained down every once in a while. Most experts recomend draining to 3.0v about every 30 cycles....
Sent from my GT-I9000 using XDA App
t1h5ta3 said:
Li-io batterys need to be drained down every once in a while. Most experts recomend draining to 3.0v about every 30 cycles....
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
Lets all break our batteries yay!!!!!
Sent from my SGH-T959 using XDA App
t1h5ta3 said:
Now that the kernel has been unlocked to alow the battery to use the full 4.2-3.0v potential, some people are having issues getting there battery to drain to 3.0 w/o having its protection circuitry kicking in.
Equipment
Multi meter- digita/ analog... doesnt matter, just need to be able to mesure DC voltage downt to atleat 1/10th volt.
Bulb -i personaly use a #194 automotive bulb
Procedure
drain battery as normal untill shutdown.
remove battery
check voltage across the 2 outer lugs ( just for referance )
take bulb, unfold the wire contacts so they stick out, touch them to the outer lugs ( bulb will barely glow its rated for 12v )
ether tape the bulb in place or hold it there ( i just hold it, keeps me from forgetting about it and draining it to low)
recheck votage every few min.
drain it to 2.9-3.0v
reinstall in phone and charge as normal
some batterys may require you to repete it to recondition the protection circuitry.
if you drain it below 2.5v you will need to buy a new battery... YOU HAVE BEEN WARNED!
Click to expand...
Click to collapse
Giving it a shot now.
PaiPiePia said:
Lets all break our batteries yay!!!!!
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
you will only break the battery by trying to drain to 2.5 or below.
3.0v is normal for a li-io battery.
this isnt new technology, were not doing any thing ground breaking. if anything were playing catchup. thank you samsung...
I am still a bit reluctant, however I am willing to proceed with more detail. If you can explain how exactly it works, it will make me feel more confident in doing so. I am not afraid at all in draining the battery with a bulb which I already picked up at Auto Zone, a 194 but this one is a 14v, all they had, and do know how to use a meter, ( am a low voltage installer, go ADT!)
So I was looking for more specifics. How does the kernel then register that the battery can now be used to 3v, etc... If you do know, if not that fine too
Just like to know how things work basically, and how it works.
Thanks!
Which kernels support 3.0v?
Sent from my SGH-T959 using XDA App
Look at eugene's a13 a14 and I think his new one too.
Well just drained the battery to 2.98v and put it on charge now. Cant get it to boot yet, even though after a minute of charging it was back at 3.3 v, Strange? ANyway Im going to let it charge some more and try to turn it on while its still plugged in.
t1h5ta3 said:
Li-io batterys need to be drained down every once in a while. Most experts recomend draining to 3.0v about every 30 cycles....
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
Can you site one of these experts?
-bZj
via XDAapp
So i have come to the conclusion that all thougj this does work to drain your battery the modded kernel does not work. I have not seen an increase in battery life at all. Which i am very dissapointed in.
Sent from my SGH-T959 using XDA App
jzero88 said:
So i have come to the conclusion that all thougj this does work to drain your battery the modded kernel does not work. I have not seen an increase in battery life at all. Which i am very dissapointed in.
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
Has Nothing to Do with the Kernel MOd... It's the Damn Kernel Clock cycles and sticking at high speeds when sleeping... I've said this many of time already & nobody listens..
OVERKILL Kernel was the First kernel that fixed this issue, so I'm not sure why you're disappointed? the issue was never fixed to start with until now, & even then you only saw a few hours at most with the 3.0V mod..
If it's Reading 3.30v then the Mod is working Correctly as by default it's set to 3.60V, in this case it's just a matter of dropping the Calculations for the battery down a bit more to get the 3.0v setting
eugene373 said:
Has Nothing to Do with the Kernel MOd... It's the Damn Kernel Clock cycles and sticking at high speeds when sleeping... I've said this many of time already & nobody listens..
OVERKILL Kernel was the First kernel that fixed this issue, so I'm not sure why you're disappointed? the issue was never fixed to start with until now, & even then you only saw a few hours at most with the 3.0V mod..
If it's Reading 3.30v then the Mod is working Correctly as by default it's set to 3.60V, in this case it's just a matter of dropping the Calculations for the battery down a bit more to get the 3.0v setting
Click to expand...
Click to collapse
Alright, finally someone who knows something about something
Well unfortunately I was unable to read through every post in the forum, but did not know of this issue. Thanks for dropping some knowledge that way I can reflash the new Kernel when I get home and, see better battery life, and watch some dragons.
Hope you didn't take my post the wrong way, by all means you are a legend among the this forum eugene and will always use your kernels, roms, etc.. With that said I might start my own thread to consolidate all of this battery questions, problems, answers etc. Thanks again eugene!!
jzero88 said:
Alright, finally someone who knows something about something
Well unfortunately I was unable to read through every post in the forum, but did not know of this issue. Thanks for dropping some knowledge that way I can reflash the new Kernel when I get home and, see better battery life, and watch some dragons.
Hope you didn't take my post the wrong way, by all means you are a legend among the this forum eugene and will always use your kernels, roms, etc.. With that said I might start my own thread to consolidate all of this battery questions, problems, answers etc. Thanks again eugene!!
Click to expand...
Click to collapse
All good man... I've just stated this a few already is all, lol....
But, with that being said, I know the Mod is working then, and I just need to do a few more adjustment to the source codec and fix a few Calculations to get us down more to the correct settings..
Thanks for Posting the 3.30V though, as this give more to go on, and I was waiting for true data reports before lowering it anymore to keep from brick batteries
~Eugene
NVM - Wrong place to post
Muffin-Factory said:
NVM - Wrong place to post
Click to expand...
Click to collapse
Wrong Thread & no it's not needed with the Latest Kernel.
eugene,
So I just flashed the new Kernel, working flawless so far, but am at 60% battery, and have a voltage of 3700 mV. Not sure if that's where the voltage should be at that percentage. You wouldn't happen to have a chart, or know what voltage should be giving what battery percentage.
Should I try draining my battery again down to 3.ov since I just flashed the new kernel?
Thanks
eugene373 said:
Wrong Thread & no it's not needed with the Latest Kernel.
Click to expand...
Click to collapse
LMFAO!!!!!!
jzero88 said:
eugene,
So I just flashed the new Kernel, working flawless so far, but am at 60% battery, and have a voltage of 3700 mV. Not sure if that's where the voltage should be at that percentage. You wouldn't happen to have a chart, or know what voltage should be giving what battery percentage.
Should I try draining my battery again down to 3.ov since I just flashed the new kernel?
Thanks
Click to expand...
Click to collapse
It's based on the init of the battery Calculations.. So if the Calculations are wrong it will report odd until there fixed... Should be fixed in the Kernel I'm running though... Will be Posting the Kernel shortly & now is Marked Stable for all at this point...
Charts? lol, not unless I boot back into linux.. I'll get the charts Posted when I can so everyone can do reporting on it.
I now have one week to the Nexus One bought secondhand. It suits me perfectly stand alone I have a little trouble with the battery life of the phone. Morning when the phone is 100% and I come out of school (14:30 hours) the battery is still around 20%. I find this a bit short. Ok, I'll use him at school (bit Internet, twitter refreshes every 9 minutes)
There is an automatic task killer, and that helps a bit but I think there are about 80% after 8 hours battery life is a bit much. Me internet is also constantly and I really like to keep.
The battery is probably not because I've got 2 batteries and they both give the same result.
Anyone have any idea what I can do?
I've been a bit inet searched but not really found anything. I did see somewhere a separate battery behind the phone, but I'm not waiting because that makes him a bit heavier and uglier.
10% per hour is pretty poor battery life. Are you running stock Android? 3rd party firmwares can give you much better battery life (the latest versions of CyanogenMod are using less than 1% per hour when fully idle).
But there are things you can check. Have you looked in Settings -> About phone -> Battery usage? If you are using Gingerbread and you look at the graph, if there is a solid line (or mostly solid) next to the "awake" portion, it means that your phone isn't properly entering its low powered state. Download spare parts from the market and check out partial wake usage under the battery history section of that app.
Please post your screen on time value from the battery menu so we can see how long your screen is on.
I would say to go and disable background data. Disabling this will definitely improve your battery life. Of course, you aren't going to get you twitter updates but aside from that, the battery life should improve.
Sent from my Nexus One using XDA Premium App
FLAC Vest said:
I would say to go and disable background data. Disabling this will definitely improve your battery life. Of course, you aren't going to get you twitter updates but aside from that, the battery life should improve.
Sent from my Nexus One using XDA Premium App
Click to expand...
Click to collapse
While it is true that battery life would improve if Background Data was disabled (or limited via a program like Juice Defender), it doesn't take into account his actual problem. Unless it is a ton of apps constantly downloading that is keeping his battery usage in the toilet, this will only yield a slight improvement. I believe the cause is is an app (or apps) that prevent his phone from entering the low powered sleep state.
I don't know what stock Android gets from completely idle use (haven't run it since July last year), but a basic CyanogenMod install would sip between 1-2% per hour with the latest stable and the latest nightlies, some are reporting 1% every 2-3 hours when the phone is left alone (due to a fix that lets the microphones go into a deep sleep state).
Twitter refreshing every 9 minutes can not be helping, that said I doubt that's your entire issue but reducing the refresh rate should help quite a bit.
If you bought it used, it could be a bum battery. Not sure i know what apps work best to find out that info. Anybody?
Estimated Prophet Hawk said:
If you bought it used, it could be a bum battery. Not sure i know what apps work best to find out that info. Anybody?
Click to expand...
Click to collapse
The battery app in my sig is the only one that reads the chip inside your battery to tell if it's legit or not, what the battery age is, etc. Needs root to work though.
Estimated Prophet Hawk said:
If you bought it used, it could be a bum battery. Not sure i know what apps work best to find out that info. Anybody?
Click to expand...
Click to collapse
You can also get Battery Left from the Marketplace and when it gets calibrated it gives you a time until death number and some other features.
Sent from my Nexus One using XDA Premium App
Start by getting rid of the task killer.
Sent from my Nexus One using XDA App
There you have it, in the title. Google engineer Dianne Hackborn, who has previously explained Android’s hardware acceleration, took to Google+ again to clarify some myths about the Android operating system. This time, it’s a point of common advice that you’ll see in virtually every FAQ thread about custom ROMs and flashing: wiping battery stats in order to improve battery life.
The reasoning behind that piece of advice was something like this: If you, at some point, did not charge your Android device fully (for example, only to 80%), it would supposedly remember that battery level as “fully charged” – in this case, you’d only ever get to use 80% of your battery, which is of course less than optimal. So, if you wipe the battery stats, usually done in ClockWord Mod Recovery, the device would “forget” the previous level, here 80%, and instead charge to the full 100% once again, thereby re-calibrating the battery. Or, as Hackborn puts it in more technical terms:
"The battery indicator in the status/notification bar is a reflection of the batterystats.bin file in the data/system/ directory."
However, as she explains, that’s not the case. Because those battery stats, stored in the batterystats.bin file, are only used to maintain information about what is using the battery when not recharging. That is, it essentially holds the information displayed in the Settings > Battery screen. Nothing more, nothing less. Thus:
It has no impact on the current battery level shown to you.
It has no impact on your battery life.
What’s more, you’ve probably noticed that the battery usage data is reset once you recharge your device anyway. From this you can correctly deduce that the battery stats are wiped as well – every time your device is recharged. More or less every day. If there was any effect, you would’ve noticed it without going into recovery and doing that stuff. Typical placebo, eh?
Original Article here:
[MYTH] Wiping batt stats helps save battery life
Just because it makes sense, and comes from someone who should know, do you think we are going to believe it? =P
Just kidding. Thanks again!
Interesting, so why is it when I flash something and let's say my bat is @ 20% but after rebooting I'm down to 4%
Doesn't do that all the time but it is odd.
Sent from my VS910 4G using Tapatalk
I saw that behavior on my previous Revo. Sounds like a good question to ask her.
I stopped "calibrating" the battery since that previous phone and have had no problems. Reading mtm say that he never calibrates with all he does with his phone, I am on that boat. Reading the quotes above is reassuring.
Sent from my VS910 4G using Tapatalk
KaneOfMars said:
Interesting, so why is it when I flash something and let's say my bat is @ 20% but after rebooting I'm down to 4%
Doesn't do that all the time but it is odd.
Sent from my VS910 4G using Tapatalk
Click to expand...
Click to collapse
I've had this too not sure what it is.
I had that same problem Kane. More than once
I've been Supercharged and Gingervolted!
RootedUser said:
I had that same problem Kane. More than once
I've been Supercharged and Gingervolted!
Click to expand...
Click to collapse
I have too and that's the whole reason I calibrate is because I thought it would give me more accurate readings. Plus, maybe I'm losing it, but I always feel like I get better battery life in the middle of the calibration process.
But after reading this, maybe I am crazy lol
Sent from my VS910 4G using XDA App
I calibrated aswell but, it still did same ****
I've been Supercharged and Gingervolted!
RootedUser said:
I calibrated aswell but, it still did same ****
I've been Supercharged and Gingervolted!
Click to expand...
Click to collapse
yea I have heard that calibrating doesn't do anything but never had legit confirmation till now
KaneOfMars said:
Interesting, so why is it when I flash something and let's say my bat is @ 20% but after rebooting I'm down to 4%
Doesn't do that all the time but it is odd.
Sent from my VS910 4G using Tapatalk
Click to expand...
Click to collapse
It's a volts/amps thing. The lower your battery is, the faster it will drain. Rebooting your phone takes a lot more energy for all the necessary operations during a boot up. Without going into detail, the amperage will pull voltage down faster on a curve as the battery level gets lower, just as it does when charging.
When charging, batteries will not only appear to charge faster for the first 40-50%, but they are because the charge voltage is much higher than the battery voltage, giving more force of energy movement. As the battery voltage increases, that force is less, therefore taking longer to push amps into the battery.
The reverse is in effect on draining. I would safely say that you likely wouldn't see that much of a percentage of change for a reboot when your battery was fully, or near full charged.
Hope that helps... I also see a major percentage drop when rebooting my phone with a battery at less than 40% charge left in it. If the battery is mostly charged, I don't notice much more than a percent or two drop.
If this isn't helpful enough and need a better explanation, just let me know and I will try to explain it better. It's just basic electricity 101.
-Cybie
@ cybie
Thanks for that bit of info, your explanation was very clear
Sent from my VS910 4G using Tapatalk
the battery drop seems to happen quite often when you flash a ROM mostly I have a question might sound dumb but since the phone is on and all systems are being active wouldnt that use more of your battery life
Damn you Hicks... next you are going to tell me unicorns aren't real.
Yesterday I was at 25% I reboot, and it warned me that I was at 15% upon starting up. I don't think it has anything to do with anything. The phone ran as though the life was still at 25% (an hour or so with heavy-ish usage.) If I have done a lot of rom-ing and theme-ing I will recalibrate (just as a reassurance to myself) I am sure it makes no difference, but it puts me at ease, and really being self centered... isn't that what life is all about?
Poor communication between the battery stat program, and the display program, could this be the thing that is driving everyone nuts? Maybe the two programs need a class to express their feelings better.
markapowell said:
Damn you Hicks... next you are going to tell me unicorns aren't real.
Yesterday I was at 25% I reboot, and it warned me that I was at 15% upon starting up. I don't think it has anything to do with anything. The phone ran as though the life was still at 25% (an hour or so with heavy-ish usage.) If I have done a lot of rom-ing and theme-ing I will recalibrate (just as a reassurance to myself) I am sure it makes no difference, but it puts me at ease, and really being self centered... isn't that what life is all about?
Poor communication between the battery stat program, and the display program, could this be the thing that is driving everyone nuts? Maybe the two programs need a class to express their feelings better.
Click to expand...
Click to collapse
Lol sorry! I'm really not trying to be all "doom and gloom." Just thought it was an interesting find lol.
An Observation
Back in the day I had an Incredible. It was truly an incredible phone. With the exception of the battery of course. There were/are always two camps or schools of thoughts about the battery. One was that you have to "condition" your battery to get better life, the other was "F it, the battery is fine". There was also the "bump charge" mythos going around as well. I think, and this is just my opinion, this is the same thing as the wiping of battery stats every time you flash a ROM.
My experience, both on the Incredible, the Inc II, the Charge, Revo and Bionic, (some of these are my wife's phones) is that conditioning the battery, or wiping battery stats are just really, as Spc pointed out, a myth. Our batteries die faster when we flash a new ROM cuz we are playing with it more. We have a new toy again.. same with themes...or new kernels.
Every time I wipe my battery stats I end up with much worse battery life for several days.
But thank you Hicks for posting the article. Its always good to read a debunked myth!! Bravo!!
These opinions are mine and not intended to troll, or irritate or annoy people. If I do, sorry.
Not sure if anyone else has seen this....but i've found charging a little while longer after it says 100% seems to provide battery life.
If it take it off the charger right away...i get about 8-10hours. If i keep it on a few hours longer, i seem to get about 12.
I'm running at 1.2GHz...gVolt
I see a lot of people complaining about battery life, myself included. I have tried just about every ROM there is and used all the battery saving apps and I think I've found a winning combination that will leave you with a fast phone and good screen on/off battery life. My stats so far today are 8 hours off the charger with 1 hr 30 mins SOT and still 80% battery left and that's shifting between my work WiFi which has many access points and causes WLAN_RX wakelocks and the crappy signal around this area.
I use the phone for general stuff like browsing the web, playing the odd 2D game whilst bored and push notifications from various social networking apps and I have been addicted to achieving 7+ hours of SOT over 2 days since I owned a Galaxy S1 many years ago. Instead of writing a crazy guide I'll just keep this thread simple and post my current configuration that is giving me good battery life:
- BOE2 bootloader, modem and ROM (I'm using Nameless ROM v2 for 910G)
- Roughly 25% brightness, all sync on, location @ GPS only (High Accuracy only when using Maps)
- Followed THIS GUIDE very closely which gives amazing deep sleep and still get notifications with the Push Notification Fixer app
- Uninstalled Facebook and Messenger and use Tinfoil with Pushbullet and the RSS Feed and set to open Tinfoil when I get a notification: Here's how to do that
- Discharge fully to 0% and then turn on again to make sure fully dead, then charge to 100% to calibrate battery
Wallah! You should get good battery life now provided you use the phone for the same things I do. It's that easy!
You need to be rooted for most of that thread don't you? I need my banking app from time to time so I can't root. Gutted!
Joe
Thank you for taking the time to write this up, but you should mention in the thread title that you need to be rooted. Thanks anyways though. I'm not the type to root. If Samsung can't deliver a good product for the $800 device they made, the device should be returned (which will be my case if the 5.1.1 update doesn't come in July or it doesn't fix the issues I'm having with this device).
rpalmer92 said:
I see a lot of people complaining about battery life, myself included. I have tried just about every ROM there is and used all the battery saving apps and I think I've found a winning combination that will leave you with a fast phone and good screen on/off battery life. My stats so far today are 8 hours off the charger with 1 hr 30 mins SOT and still 80% battery left and that's shifting between my work WiFi which has many access points and causes WLAN_RX wakelocks and the crappy signal around this area.
I use the phone for general stuff like browsing the web, playing the odd 2D game whilst bored and push notifications from various social networking apps and I have been addicted to achieving 7+ hours of SOT over 2 days since I owned a Galaxy S1 many years ago. Instead of writing a crazy guide I'll just keep this thread simple and post my current configuration that is giving me good battery life:
- BOE2 bootloader, modem and ROM (I'm using Nameless ROM v2 for 910G)
- Roughly 25% brightness, all sync on, location @ GPS only (High Accuracy only when using Maps)
- Followed THIS GUIDE very closely which gives amazing deep sleep and still get notifications with the Push Notification Fixer app
- Uninstalled Facebook and Messenger and use Tinfoil with Pushbullet and the RSS Feed and set to open Tinfoil when I get a notification: Here's how to do that
- Discharge fully to 0% and then turn on again to make sure fully dead, then charge to 100% to calibrate battery
Wallah! You should get good battery life now provided you use the phone for the same things I do. It's that easy!
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Click to collapse
Fully discharging a Li-Ion battery is not healthy for the long term life of the battery.
When will the myth of "re-calibrating" a battery finally die?!?
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Similar to a mechanical device that wears out faster with heavy use, so also does the depth of discharge (DoD) determine the cycle count. The shorter the discharge (low DoD), the longer the battery will last. If at all possible, avoid full discharges and charge the battery more often between uses. Partial discharge on Li-ion is fine. There is no memory and the battery does not need periodic full discharge cycles to prolong life.
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Thanks for the guide, and I'm not sure why anyone on XDA would not be rooted tbf
senectus said:
Fully discharging a Li-Ion battery is not healthy for the long term life of the battery.
When will the myth of "re-calibrating" a battery finally die?!?
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
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Click to collapse
Smartphone batteries haven't needed to be calibrated in years. The only time you ever had to "calibrate" your battery was when your phone would sit at either 5% or 1% for hours before dying.
Even then you were calibrating your phones interpretation of the battery voltage levels, not the battery itself. Unless I'm very much mistaken battery charging is handled by integrated hardware, not software.
As a software bug overcharging a Li-Po is dangerous and completely avoidable
Tom540 said:
Thanks for the guide, and I'm not sure why anyone on XDA would not be rooted tbf
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Because banking apps won't work on rooted devices.
Tom540 said:
Thanks for the guide, and I'm not sure why anyone on XDA would not be rooted tbf
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Click to collapse
Because root trips Knox which means in my workplace I can't use the phone for work proposes.
Sent from my SM-N910G using XDA Free mobile app
Most of the software needed on those guide required exposed.. My question is does amplify, greenify boost, and powernap works on touchwiz lollipop? Also does the current xposed works stably for now?
I have no battery issues. Got 2 x 4500mah from chima as well.
joebongo said:
Because banking apps won't work on rooted devices.
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Lol that sucks man my banking app still works after root even on cyanogenmod
Tom540 said:
Thanks for the guide, and I'm not sure why anyone on XDA would not be rooted tbf
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really??????
I see no need to root - does this mean I'm not allowed in here?
bonerp said:
really??????
I see no need to root - does this mean I'm not allowed in here?
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Lol
My Note 4 version can't even get full root, so I guess I'm not allowed either.
Sent from my SAMSUNG-SM-N910A using Tapatalk
toofimoofi said:
I have no battery issues. Got 2 x 4500mah from chima as well.
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Link for them? How they last? Fit with oem cover ?
Inviato dal mio SM-N910F utilizzando Tapatalk
Thanks for sharing this info just have one question I see from some of your other posts that you have used other roms is there much difference in battery between tw roms to cm roms
Thanks
joebongo said:
Because banking apps won't work on rooted devices.
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Huh? Never had a problem running official apps from two different banks.
I'm finding TW to be slightly better on battery under my circumstances - which consist of terrible signal fluctuation and rx_wlan wakelocks due to so many wireless arrays at work - however I will probably go back to CM12.1 soon or wait for Android M developer preview to be ported to Note 4 (fingers crossed) as I just love how stock and minimalistic everything is on stock droid CM and AOSP and it seems to be a lot snappier when combined with L-Speed mod.
joebongo said:
Because banking apps won't work on rooted devices.
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My banking apps work a treat! Especially since you can just disable root and BAM it runs!
masterchif92 said:
Link for them? How they last? Fit with oem cover ?
Inviato dal mio SM-N910F utilizzando Tapatalk
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They fit with the original note cover. And they last a bit longer then original battery.
I bought 1 as well & I get about 3 more hours. .... with the same use as with the original battery !!!!! Definitely worth it, ,, even if its only 3 hours
Sent from my SM-N910V using xda premium
Can someone who actually has the phone post real world battery life test results with full res on, Bluetooth WiFi and GPS on, and without running YouTube to run down the battery.
I saw the video from the YouTube tech guy (thanks for all those btw), but these devices are optimized for video so running down the battery with a long Youtube playlist isnt "actual useage" if you know what I mean.
gingi999 said:
Can someone who actually has the phone post real world battery life test results with full res on, Bluetooth WiFi and GPS on, and without running YouTube to run down the battery.
I saw the video from the YouTube tech guy (thanks for all those btw), but these devices are optimized for video so running down the battery with a long Youtube playlist isnt "actual useage" if you know what I mean.
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I don't think anyone here actually has the phone yet And to be honest if your not happy with the current reviews I don't think you will be with future ones either because it will never be 'your' usage and no one else can replicate that except you.
MrAshMan said:
I don't think anyone here actually has the phone yet And to be honest if your not happy with the current reviews I don't think you will be with future ones either because it will never be 'your' usage and no one else can replicate that except you.
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Yea a lot of people get the devices before the consumer release date to review them. Like this guy I know that it wont be "my usage", but I did stipulate a few conditions that would make it close to my use case and I wanted to make sure that streaming video on loop wasn't part of the test.
gingi999 said:
Yea a lot of people get the devices before the consumer release date to review them. Like this guy I know that it wont be "my usage", but I did stipulate a few conditions that would make it close to my use case and I wanted to make sure that streaming video on loop wasn't part of the test.
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Understand completely.. i do not see the point in strategically getting high SoT or battery usage stats.. I just don't think it would help you someone else posting there usage for you to make a decision on. I assume you would be comparing it with your current phone with your usage
I've seen a video on YouTube that claims the screen on time is 6 hours and 45 minutes during normal use. That would be incredible
Found a great video on battery life
gingi999 said:
Found a great video on battery life
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Seeing that video gives me hope. But seeing no updates to improve S8+ Is bull.
Just remember to look after your battery initially. When you first get your device charge it without using it. Once charged you'll be doing a lot of transfers and updates which will heat up the battery and device because of the load - I always do this initial set-up in a cool room or outside if cooler and without a case to keep the battery cool. Once set-up and you've played with it and the battery is drained, don't charge it . Switch off the device and let it cool down. Following this initial care procedure should give you better long term battery life.
Izvid said:
Seeing that video gives me hope. But seeing no updates to improve S8+ Is bull.
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Yep me too. I was very concerned. But looks like they softwared a solution to my fears
jah said:
Just remember to look after your battery initially. When you first get your device charge it without using it. Once charged you'll be doing a lot of transfers and updates which will heat up the battery and device because of the load - I always do this initial set-up in a cool room or outside if cooler and without a case to keep the battery cool. Once set-up and you've played with it and the battery is drained, don't charge it . Switch off the device and let it cool down. Following this initial care procedure should give you better long term battery life.
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I really thought Li-ion batteries don't need any initial formatting. Am I wrong?
pedmond said:
I really thought Li-ion batteries don't need any initial formatting. Am I wrong?
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Most manuals say charge fully prior to first use. Keeping the battery cool super important. Battery also better if charged with device off.
pedmond said:
I really thought Li-ion batteries don't need any initial formatting. Am I wrong?
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They don't need any initial conditioning, like NiCd or (to a lesser extent, NiMh), but ...
jah said:
Most manuals say charge fully prior to first use. Keeping the battery cool super important. Battery also better if charged with device off.
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As @jah says, heat is the enemy of Li-Ion batteries. The cooler you can keep them, the better. Don't charge them when they're warm to the touch, and don't fast-charge them unless you really need to. I don't think charging them with the device off provides a significant enough benefit to go to the trouble of shutting down your phone before and turning it on after, though.