Hey, has anyone noticed their battery meter saying a low percentage and then seeing it increase after not touching the phone for a while? ive noticed my phone will say 2% for example and ill let it sit for a while and when i check it again its all the way up to 10%. I have calibrated the battery but it doesn't affect it and it still happens?
lol yea my battey is solar powered.. lol jkjk.. but naw its because when your screen is on it adjusts tye percentage based off how your using it.. if its asleep for a while tye battery percentage will increase because its not being used make sense?
Sent from my SPH-D710 using XDA
elliwigy said:
lol yea my battey is solar powered.. lol jkjk.. but naw its because when your screen is on it adjusts tye percentage based off how your using it.. if its asleep for a while tye battery percentage will increase because its not being used make sense?
Sent from my SPH-D710 using XDA
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Click to collapse
Nope, it actually doesn't make sense.
You're gas gauge in your car doesn't go up when your car isn't being used. Percentages shouldn't increase without charging no matter what.
FWIW, I've experienced this a few times. My battery has increased as much as 5% without being charged and that's in one string. For example, my battery may go down to 50%, then over the next 20 minutes go to 55%, then an hour later 42% and rise up to 45% and so on. Not sharp spikes either, steady gradual increases.
elliwigy said:
lol yea my battey is solar powered.. lol jkjk.. but naw its because when your screen is on it adjusts tye percentage based off how your using it.. if its asleep for a while tye battery percentage will increase because its not being used make sense?
Sent from my SPH-D710 using XDA
Click to expand...
Click to collapse
No, it does not work like that.
Battery app re-calculates the remaining battery based on the battery power currently being used (mV) and history. That's why we are doing the calibration to correctly measure the current battery status and range of it.
In most case, battery power (mV), it goes down from the top and it usually up & down within a small range but for overall, it goes down.
But sometimes, the current mV is goes up and it's caused by
1. Battery usage forecast was wrong or
2. Battery is recovering its power again - for example, after CPU intensive task, the voltage could goes up
3. the remaining percentage goes up if the battery usage is slower than the expectation (it's not going up because it's not being used. Even the screen is off, the battery is still being used). In this case battery app recalculate the percentage based on the current mV and trend that how fast battery mV is decreasing. If mV is increasing, then battery app will show like it's being charged...
There are couple of more things that we also consider in here but I think this is enough information to know.
Update: Let me add a couple of more.
From OP's screenshot, it shows that there's big drop in battery percentage. Usually, big drop happens (battery power is decreasing so fast), it's really hard to calculate the exact remaining percentage because battery shows some irregular pattern after that kind of fast drop. So, some point of time, battery app recalculate the percentage based on current voltage. That's why it's showing going up.
One more case is, the pattern change. After big drop and/or voltage is about the same (stay almost same), then battery app also adjust the remaining battery level indicator.
Simple example) Just like Human. I just finished eating and fully charged. After a meal, I worked so hard and almost exhausted. No power left. But after a little break, I could recover my power a little more.
This example is not exactly same but it would be more easier to understand.
I have noticed this. Could it be that after the battery runs out the phone puts itself in a low consumption mode, thus the battery cools down, increasing the efficiency of delivering power, thus increasing the apparent voltage available? This would be similar to putting the battery in the fridge to get a litte bit of extra juice...
Sent from my SGT10.1 using XDA Premium
Its just the phone reading the voltage wrong, the calibration is outta wack.
qwerty12601 said:
Nope, it actually doesn't make sense.
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Makes complete sense. There is no accurate way to judge the potential energy stored within a battery. Changes in temperature are one of many things that effect the chemical availability of energy.
Little shifts in measured overall capacity and current charge change all the time on every device you own. Most of them do not update to reflect this, some dont update in the wrongest way. My ASUS gaming laptop doesnt report new full charge capacities to windows and now more than ever with the battery being half shot i can hit 150% but it always did this from new sometimes would show it had stopped charging at 98% when it reached full capacity or 101%.
I can explain the software aspects of the problem. But you will need an electrical engineer, chemical analyst to help you go over the batteries end of it. I of course am not familiar with Android in particular but Portable PC's Sony's PSP etc seen it everywhere.
Its due to a flaw in Samsung phones where it does not correctly read the battery. Sometimes a phone reboot will show as much as a 70% (from my experience) in battery but then my battery will start to "charge" itself as the phone reads the voltage better. I've seen this happen on our phones and the captivate
Sent from my SPH-D710 using Tapatalk
qwerty12601 said:
Nope, it actually doesn't make sense.
You're gas gauge in your car doesn't go up when your car isn't being used. Percentages shouldn't increase without charging no matter what.
Click to expand...
Click to collapse
you have no idea how mechanical measuring works, do you? here is an example of how gas is measured; a floating ball attached to an arm changes the voltage of the signal depending on the amount of fuel in the tank. Higher the ball, higher the voltage, and thus higher the gas gauge.
Consequently, you will notice fuel gauges reading higher going uphill and lower when going down, because gas doesnt just sit in one place. The gauge is usually calibrated for when the car is standing still.
Now that you have an idea how mechanical measurement works, can you apply this to battery chemistry? NO, because they are completely different!
Battery life is measured using a formula, not a mechanical device. It is, in essence, a best guess. Some formulas are better than others, but they are all still estimates. And you will notice fluctuations.
Sent from my SPH-D710 using Tapatalk 2
rianbechtold said:
Hey, has anyone noticed their battery meter saying a low percentage and then seeing it increase after not touching the phone for a while? ive noticed my phone will say 2% for example and ill let it sit for a while and when i check it again its all the way up to 10%. I have calibrated the battery but it doesn't affect it and it still happens?
Click to expand...
Click to collapse
i had the same thing happened to me, and i have the pic somewhere.. where the battery just dropped from like 80% to 30% in less then 5 min.. i was using it, and had the screen off, and had it on again.. and it went down like crazy.. and afterwards.. it started to go up, as if i was charging the phone..
some one said that, its a bug by samsung, where if you charge your phone not quiet to 100% and use the phone, this can happen..
concerning what some other guy said about turning the phone off and on, can boost batery power.. that was hilarious sad..
likkkkkke thisssss?
first one is recent.. second one is from one of the initial ics leaks..
Or this freak
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Somairotevoli said:
Or this freak
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Click to collapse
Um or not lol. Considering you have charging in there
RainMotorsports said:
Um or not lol. Considering you have charging in there
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Click to collapse
Or yes as you can see it clearly (or in your case, not so clearly) going up at points it's not being changed
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Somairotevoli said:
Or yes as you can see it clearly (or in your case, not so clearly) going up at points it's not being changed
Sent from my SPH-D710 using Tapatalk
Click to expand...
Click to collapse
However very much expected. You have created a circumstance where accuracy was guaranteed to be off. Making sure that multiple corrections were a reality.
I would hope that in a 2 day period you had 3 to 4 hours to sleep where this phone could have reached 100% twice and only been on the charger about 4 times. Obviously a couple very busy days for you. I could guess any number of occupations that might have done this to you
Sent from my SPH-D710 using Tapatalk
That looks almost as if to suggest the sampling did not occur at all while the phone was sleeping.
turbomeister said:
you have no idea how mechanical measuring works, do you? here is an example of how gas is measured; a floating ball attached to an arm changes the voltage of the signal depending on the amount of fuel in the tank. Higher the ball, higher the voltage, and thus higher the gas gauge.
Consequently, you will notice fuel gauges reading higher going uphill and lower when going down, because gas doesnt just sit in one place. The gauge is usually calibrated for when the car is standing still.
Now that you have an idea how mechanical measurement works, can you apply this to battery chemistry? NO, because they are completely different!
Battery life is measured using a formula, not a mechanical device. It is, in essence, a best guess. Some formulas are better than others, but they are all still estimates. And you will notice fluctuations.
Sent from my SPH-D710 using Tapatalk 2
Click to expand...
Click to collapse
Now that you've got that out of your system, let me explain it a little more simply so you understand.
It was an analogy. I never said that battery percentage was calculated the same way as fuel capacity. But it's an analogy to help you relate.
Batter percentage is a measure of volume of power left in the battery. It should never fluctuate UP without being charged, unless something is wrong with the battery/phone. 55% is 55%, no matter what temperature, usage time, current usage is. If the battery is 1800 mah, then 50% battery level means there's 900 mah left. It's not a calculation of anything else. Just like if your fuel tank hold 16gal, and the needle is at 1/2 (stationary of course, not parked/driving up or downhill as you needlessly pointed out), you have 8 gal left. There's no mathematical calculation needed there.
Just for reference, I own no other electronic device that magically increases in battery percentage. My laptop goes down unless it's being charged. It's a quirk/flaw with the system in the phone. Plain and simple.
BTW, no apology needed. I'm just happy to educate you!
Didn't you know? Our device's covering is actually made of solar panels
Sent from my SPH-D710 using xda premium
qwerty12601 said:
Nope, it actually doesn't make sense.
You're gas gauge in your car doesn't go up when your car isn't being used. Percentages shouldn't increase without charging no matter what.
FWIW, I've experienced this a few times. My battery has increased as much as 5% without being charged and that's in one string. For example, my battery may go down to 50%, then over the next 20 minutes go to 55%, then an hour later 42% and rise up to 45% and so on. Not sharp spikes either, steady gradual increases.
Click to expand...
Click to collapse
My gas guage goes up when i park uphill.
Related
Could someone please develop a good app that would enable the battery to be drained as much as possible and to charge slower so we could all properly calibrate our batteries?
Do we really need this since it's a Li-ion battery? I know Ni-Mh and Ni-Cad has memory effect, but not on the Li-Ion battery.
I was just wondering the same thing today....simply because there seems to be several different methods to do it. Some say charge 8 hours, turn off, charge and hour, unplug, turn on charge 10 minutes. Then other methods say to do something different....be nice to have an app to walk you through different methods so you know step by step your doing it right
I calibrated mine last night and I'm going to get about 18 hours if not more from it....before yesterday I was getting 9.
The ONLY other different I did was make some profiles on CPU but I cant imagine it would make that much of a difference. I bet its a mix of both
deonjahy said:
Could someone please develop a good app that would enable the battery to be drained as much as possible and to charge slower so we could all properly calibrate our batteries?
Click to expand...
Click to collapse
That is to funny I was just saying to my wife the other day that I should make one of these programs seeing that there are none already. I hate having to manually kill my battery every night before I charge it again.
Is it needed? It depends on your school of thought, some say yes, some say no. All I know is that on the few devices I have had in the past, if I constantly plug them in to "top them off" then the battery never ends up lasting very long after a few months of doing that. So I am a believer in killing the battery before charging on devices like these.
So the bottom line is if there is a desire for this, I may try to put an app together for it, as I know myself I am interested I just didn't think many others would be.
All the battery calibration tools, are basically deleting the file... right?
Is it that hard to boot into recovery and wipe battery stats?
deonjahy said:
Could someone please develop a good app that would enable the battery to be drained as much as possible and to charge slower so we could all properly calibrate our batteries?
Click to expand...
Click to collapse
I think the second part has to do with hardware. The phones hardware just doesn't have trickle charge implemented and instead lets it drop back down to 90% then starts charging it again.
As for the second part, it came on our phones, even has a default widget. 4G
paulieb81 said:
That is to funny I was just saying to my wife the other day that I should make one of these programs seeing that there are none already. I hate having to manually kill my battery every night before I charge it again.
Is it needed? It depends on your school of thought, some say yes, some say no. All I know is that on the few devices I have had in the past, if I constantly plug them in to "top them off" then the battery never ends up lasting very long after a few months of doing that. So I am a believer in killing the battery before charging on devices like these.
So the bottom line is if there is a desire for this, I may try to put an app together for it, as I know myself I am interested I just didn't think many others would be.
Click to expand...
Click to collapse
Um... actually that is (by most accounts) bad for Li-Ion. You want to AVOID completely draining them. All of this stuff is more art than science, but I have way more often heard that completely draining LI batteries is bad. What kills them is the number of cycles they have been through (like -25 +25, -25 +25, -50 +50 would be a full cycle).
You do however want to give them a full up down cycle once in a while (maybe every 1-3 months) for calibration.
Then again, as I said, it is more art than science, and I have heard your method as being better, but the not draining argument seems to be the vast majority.
I'll try to do a little look-see and update this or repost if I find any stronger evidence.
the thing about my phone and battery that ALWAYS baffled me was i would plug it in at night be it at 10% or 22 i would leave plugged in while slept i would wake up unplug and look at battery percentage and it would be like 95.....no other phone has even unplugged and dropped 5 percent by doing nothing????
turn your brightness to 100% and change it so that it never turns off; use wifi tether and play a 720p movie at the same time; oc your kernel to it's highest stable frequency. it'll drain pretty quickly.
I know I might get flamed for this....
Apple suggests, with their laptops, to once a month or so, run the battery completely down. Then let the battery cool down for a little bit. Then give it a full, uninterrupted, overnight charge. I forget if they said to repeat this a second time, then you're good.
This is all from memory of me reading this a couple years ago or so, so our might not be verbatim. Their laptops use lithium ion technology...
(and they used to blow up and melt down too!) Lol!
Wrong word choice and misspelling courtesy of swype.
mykeldrip said:
the thing about my phone and battery that ALWAYS baffled me was i would plug it in at night be it at 10% or 22 i would leave plugged in while slept i would wake up unplug and look at battery percentage and it would be like 95.....no other phone has even unplugged and dropped 5 percent by doing nothing????
Click to expand...
Click to collapse
That's because the phone stops charging when it reaches 100%, and runs off of battery probably until it reaches in the low 90s, then charges again. You won't ever notice this because the light will always be green. However, you'll notice that unplugging it a few moments after it turns green, the battery will stay anywhere from 100%-98% for a while. At least on my phone it does.
Is there any way to make this program "auto run" during sleep so it can do everything it needs to do during the night charge (similar to quickpull for blackberry)
laydros said:
I think the second part has to do with hardware. The phones hardware just doesn't have trickle charge implemented and instead lets it drop back down to 90% then starts charging it again.
As for the second part, it came on our phones, even has a default widget. 4G
Um... actually that is (by most accounts) bad for Li-Ion. You want to AVOID completely draining them. All of this stuff is more art than science, but I have way more often heard that completely draining LI batteries is bad. What kills them is the number of cycles they have been through (like -25 +25, -25 +25, -50 +50 would be a full cycle).
You do however want to give them a full up down cycle once in a while (maybe every 1-3 months) for calibration.
Then again, as I said, it is more art than science, and I have heard your method as being better, but the not draining argument seems to be the vast majority.
I'll try to do a little look-see and update this or repost if I find any stronger evidence.
Click to expand...
Click to collapse
I am by no means an expert so if you find any reliable info on this and can link us to read, I would love to learn more. All I know is that it is commonly said to drain rechargeable batteries and that I have seen that topping them off very often does lead to battery life degradation.
Tyzing said:
Is there any way to make this program "auto run" during sleep so it can do everything it needs to do during the night charge (similar to quickpull for blackberry)
Click to expand...
Click to collapse
There is no need to fully drain the battery. Its purpose in calibration is to configure the software that is correlating voltage to percentage charged. That's all. Regarding the old Apple advice, that is doing the same thing. It will not affect the hardware.
Now, what WILL affect the hardware is charging itself. Every charge/discharge cycle will reduce the total capacity of the battery. This is why the EVO will not cycle on it's own until 10% discharged. It's improving the overall battery life by that restriction.
In short, you will save money overall by getting a higher capacity battery that you don't force to charge too often. Draining your battery does nothing but give you peace of mind and it only really needs recalibrating when it's total capacity has been reduced which isn't often. 3-6 months.
Sent from my PC36100 using XDA App
herbthehammer said:
I know I might get flamed for this....
Apple suggests, with their laptops, to once a month or so, run the battery completely down. Then let the battery cool down for a little bit. Then give it a full, uninterrupted, overnight charge. I forget if they said to repeat this a second time, then you're good.
This is all from memory of me reading this a couple years ago or so, so our might not be verbatim. Their laptops use lithium ion technology...
(and they used to blow up and melt down too!) Lol!
Wrong word choice and misspelling courtesy of swype.
Click to expand...
Click to collapse
Yeah except that's not a good idea, it will kill the weak cells.
I understand. Still think it would be useful if it would do the "juice until LED changes" method while sleeping though
paulieb81 said:
So the bottom line is if there is a desire for this, I may try to put an app together for it, as I know myself I am interested I just didn't think many others would be.
Click to expand...
Click to collapse
I'm interested!
Btw - what are the charging calibrations people are using? Are you seeing one working better than another?
Im a noob, so take what I say worth a grain of salt but yesterday I did the standard method where you fully charge...turn off...plug back in until led changes green and do it a few times.
I went from 9 hours to 17 hours with no other changes except a few profiles in setCPU.
I did this just last night so my results are fresh.
Tyzing said:
I calibrated mine last night and I'm going to get about 18 hours if not more from it....before yesterday I was getting 9.
The ONLY other different I did was make some profiles on CPU but I cant imagine it would make that much of a difference. I bet its a mix of both
Click to expand...
Click to collapse
A few SetCPU profiles is all it takes to see a dramatic increase in battery life, especially while screen off. If you disable it I bet whatever gain you think was from 'calibrating' it disappears.
1. Turn your device ON, charge the device for 8 hours or more
2. Unplug the device,turn the phone OFF, charge for 1 hour
3. Unplug the device, turn ON wait 2 minutes (basically when the phone is all booted up and ready), turn OFF, charge for 1 hour
Happy longer battery life everyone!
http://forum.xda-developers.com/showthread.php?p=7690163
?
sent from my Zuse Z1
Franz Jakob Tim said:
http://forum.xda-developers.com/showthread.php?p=7690163
?
sent from my Zuse Z1
Click to expand...
Click to collapse
Didn't notice it had already been put down similar.
My bad.
Does this really work?
Batterys die slow normally, does this recover them?
Franz Jakob Tim said:
http://forum.xda-developers.com/showthread.php?p=7690163
?
sent from my Zuse Z1
Click to expand...
Click to collapse
Ive done the method from that thread and it worked the first time, second time and more didnt see any difference really unless you do that every charge but i guess that would just kill the battery
I have done all the above and did't see any changes
Would be nice if this would work, but I doubt it...
That doesnt do anything, i get good battery from not having any auto sync updates, brightness is low, widgets for 3g, gps wifi etc.. thats how i get up to 2 days normal usage on full load.
Didn't make any significant changes to mine. I guess if it ever really works then this would be a brain new, never charged battery.
I can only make like up to 24:00 (no use), usualy 7-10 hours of moderate use, can kill in an hour our two on gps.
Sent from my HTC Desire using XDA App
I used this method when I got Desire and it worked very well! In a meanwhile my battery life weakened, probably because of new ROMs and kernels...so should I repeat this to extend battery life?
that reads like overloading the battery. didnt that just work for the old type of batteries?
HTC uses Ni-MH batts, guys. These things attain long lifespans through two things mostly:
a) keeping it protected from extreme temperatures
b) frequent top-ups
I don't think the idea of keeping it plugged in after full charge is a good idea. The ff is from batteryuniversity.com:
"Lithium-ion suffers stress when exposed to heat and kept at a high charge voltage.
Elevated temperature is anything that dwells above 30°C (86°F), and a high voltage is higher than 4.10V/cell. When estimating longevity, these conditions are difficult to assess because the battery state is in constant flux, and so is the temperature in which it operates. Exposing the battery to high temperature and being at full state-of-charge for an extended time can be more damaging than cycling."
Doesn't work for me I really need more battery life!
I learned a long time ago, even before my smart phone days, that battery life is something I'll never had.
Quick fixes will never work, but preparedness will. For instance; I have 3 charging cables. 1 at home, 1 at work and one in my car. I even had a spare battery for my previous phone.
Things like the first post, I'll never bother trying. It's silly. And looking at the poll results says it all.
I recently did it and I got 2 days out of my battery.
But I assume it will weaken over time and slowly have no effect.
Borat38 said:
HTC uses Ni-MH batts, guys. These things attain long lifespans through two things mostly:
a) keeping it protected from extreme temperatures
b) frequent top-ups
I don't think the idea of keeping it plugged in after full charge is a good idea. The ff is from batteryuniversity.com:
"Lithium-ion suffers stress when exposed to heat and kept at a high charge voltage.
Elevated temperature is anything that dwells above 30°C (86°F), and a high voltage is higher than 4.10V/cell. When estimating longevity, these conditions are difficult to assess because the battery state is in constant flux, and so is the temperature in which it operates. Exposing the battery to high temperature and being at full state-of-charge for an extended time can be more damaging than cycling."
Click to expand...
Click to collapse
What kernel is your ROM using?
Kernel's have a big impact on the life of your battery. I know mine doubled switching from kernels.
my phone has just recently started to give me the 15% warning then 2 minutes later switch off.
I used to get 10% and 5% before auto shut down.
I'm debranded orange on stock
2.2 2.29.405.5 (release keys)
kernel
2.6.32.15 [email protected]#1 (whatever that means)
Is this caused by software/rom based issues or is my battery on the way out?
(I did the fix in the OP and it did have a positive effect but that was months ago)
don't believe it's a good idea
Borat38 said:
HTC uses Ni-MH batts, guys. These things attain long lifespans through two things mostly:
a) keeping it protected from extreme temperatures
b) frequent top-ups
I don't think the idea of keeping it plugged in after full charge is a good idea. The ff is from batteryuniversity.com:
"Lithium-ion suffers stress when exposed to heat and kept at a high charge voltage.
Elevated temperature is anything that dwells above 30°C (86°F), and a high voltage is higher than 4.10V/cell. When estimating longevity, these conditions are difficult to assess because the battery state is in constant flux, and so is the temperature in which it operates. Exposing the battery to high temperature and being at full state-of-charge for an extended time can be more damaging than cycling."
Click to expand...
Click to collapse
HTC Desire doesn't use Ni-MH
theturtleman said:
What kernel is your ROM using?
Kernel's have a big impact on the life of your battery. I know mine doubled switching from kernels.
Click to expand...
Click to collapse
I'm interested in this, what kernel did you use first and to which one did you switch? Also what ROM do you use and how much battery life do you get now?
Grtz
Surely when the charge reaches 100% the charge is stopped?
Looking for technical answer. Why several charge cycles for ROM to "settle in"?
So we all know its a common rule when we flash a new ROM we should give it 2 or 3 full charge cycles to "settle in" before we judge what our battery life will be.
But why?
I did Google it, and really only came up with the conclusion that its common knowledge. "Because thats the way it is". But can someone give a white paper type of reply?
No one can, because it's not true.
It's along the lines of clearing battery stats or calibrating the battery. A Google engineer made a public post that it's all cargo cult nonsense, and that all that's contained in the battery stats is info for generating those pretty graphs in the settings screen, but people around here persist in continuing to do so.
Yeah, it's bull****.
Sent from my SGH-T989 using Tapatalk
More or less the few min on boot thing, is its booting, allows the rom to fully initiate on its own, not 100% needed but does help in the sense that like windows if u open crap while its still booting it can tend to throw the system off a lil bit.
Few batterycycles, bull****.
Clear batterystats?some devices it CAN help, with this phone its pointless, as this phone has a chip to automaticly calibrate the battery anyways.
All these "tips" are more or less worthless to us and can be taken lightly..
Cool thanks guys
edit: manekineko...I search a little but couldnt find it. Can you give me some search terms or a link (if you can find it quickly) to that Google engineer's comments?
blackangst said:
Cool thanks guys
edit: manekineko...I search a little but couldnt find it. Can you give me some search terms or a link (if you can find it quickly) to that Google engineer's comments?
Click to expand...
Click to collapse
Here it is...
https://plus.google.com/u/0/105051985738280261832/posts/FV3LVtdVxPT
and an article that links to the google + above...
http://www.talkandroid.com/83611-go...ats-doesnt-improve-battery-life/#.T2dqChEgelg
G1ForFun said:
Here it is...
https://plus.google.com/u/0/105051985738280261832/posts/FV3LVtdVxPT
and an article that links to the google + above...
http://www.talkandroid.com/83611-go...ats-doesnt-improve-battery-life/#.T2dqChEgelg
Click to expand...
Click to collapse
Thanks! Sig worthy!
now can someone explain why sometimes it takes a long time to drop batt% when it is high but quickly drops when it's in the reds... or the opposite that it drops really quick when its high but lasts forever when it's red
or when you restart your phone.. your battery level sometimes jump or drops drastically
my guess is that sometimes that chip that automatically calibrates and reads your battery is sometime inaccurate after you poweroff/reboot/pull battery.
Just a guess, but I don't really care much about all that nonsense because our phone lasts a damn long time!
Teo032 said:
now can someone explain why sometimes it takes a long time to drop batt% when it is high but quickly drops when it's in the reds... or the opposite that it drops really quick when its high but lasts forever when it's red
or when you restart your phone.. your battery level sometimes jump or drops drastically
my guess is that sometimes that chip that automatically calibrates and reads your battery is sometime inaccurate after you poweroff/reboot/pull battery.
Just a guess, but I don't really care much about all that nonsense because our phone lasts a damn long time!
Click to expand...
Click to collapse
Your battery % is read from the mah left inside the battery, these readings are then translated by the OS into a percsnt based of the max mah on the battery.
Once the percentage is obtained/displayed a new cycle begins, battery drain is completely depentant on the use of the device.
That being said on reboots the first known "cycle" as il refer to it as, is displayed. This first response is usually correct but can vary slightly until the system crosschecks the data.
If that does happen, wit a minute and the system will correct the value in approximately a minute.. hopefully thats clear enough and hope it answeres your question..
Thought i hit post but didnt n left browser open all mornin :/ lmao
doug36 said:
Your battery % is read from the mah left inside the battery, these readings are then translated by the OS into a percsnt based of the max mah on the battery.
Once the percentage is obtained/displayed a new cycle begins, battery drain is completely depentant on the use of the device.
That being said on reboots the first known "cycle" as il refer to it as, is displayed. This first response is usually correct but can vary slightly until the system crosschecks the data.
If that does happen, wit a minute and the system will correct the value in approximately a minute.. hopefully thats clear enough and hope it answeres your question..
Thought i hit post but didnt n left browser open all mornin :/ lmao
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I have yet to see the system suddenly correct the value. And no i was referring to battery drain with the same usage. They drain differently, it is never a linear drain. And i believe it's more than just measuring the mah left in the battery because a dead battery still has mah. And then there are extended batteries with higher mah. Oh wells.
Sent from my SGH-T989 using xda premium
Teo032 said:
I have yet to see the system suddenly correct the value. And no i was referring to battery drain with the same usage. They drain differently, it is never a linear drain. And i believe it's more than just measuring the mah left in the battery because a dead battery still has mah. And then there are extended batteries with higher mah. Oh wells.
Sent from my SGH-T989 using xda premium
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No crap, there higher capacity/higher MAH
And No Li-iON battery will die down to 0 MAH...
*edit
And seeing as you obviously don't know how to use google, I saved you the trouble
Terminology: mAh
Definition: The mAh acronym stands for Ampere-hour.
This is a unit of electric charge, and is frequently used in measurements of electrochemical systems such as batteries.
Example: a 2000mAh cell is half the charge capacity of a 4000mAh
If you can't take the answer given, don't ask.
Ofc its not a liniar drain ita based off usage/aps running..
And yes this is called for
Info on batterys
http://www.knowyourmobile.com/glossary/m/513466/mah.html
*EDIT2
Found a plausible way for you to achieve that close to linear drain you so desire:
A.) Install stock rom & kernel,
B.) Root, remove all bloat and ALL apps, as some start automaticly and and are registered as services and last through taskkillers.
C.) Disable ALL sync features, turn on airplane mode.
D.) don't touch phone for a few days..
Should be pretty damn linear for ye
MOD EDIT: Removed at the request of AndroidAdvices.com
Source ::
http://androidadvices.com/bump-char...mpaign=Feed:+AndroidAdvices+(Android+Advices)
Sent from my GT-S5360 using xda premium
***DON'T DO DRUGS***
?????? Believe it or not ??????
Sent from my GT-S5360 using xda premium
Lmao thats like a whole day of charging.
raolemo said:
Lmao thats like a whole day of charging.
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Hahaha ....
Funny..
Why not hole night ....????
Sent from my GT-S5360 using xda premium
Its like you are calibrating your battery again and again... I hav evn seen a thread a same like this for my psp years ago and it worked on it... Still to test on my phone
Sent from my GT-S5360 using XDA
I can't find any logical reason to explain how this method will work. I'm a chemist student, and I know the technology which used in our battery. as far as I know, charge our battery longer than its full time will decrease our battery life.
btw, it may sounds silly. after some years, we'll found that our battery power decreased. it will drain quicker than usual. if this happen, we may wrap our battery into a plastic bag then put it into freezer for 3-7 days.
I don't think bump charging is such a good idea. Bump charging kills your battery over time. I'll link an article later about it, soon as I find it.
Tapatalked.
kurotsugi said:
...as far as I know, charge our battery longer than its full time will decrease our battery life. ...
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Silvane said:
I don't think bump charging is such a good idea. Bump charging kills your battery over time. I'll link an article later about it, soon as I find it.
.
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+1
charge more than necessary is a bad idea. if you have good phone, they have overcharge protection circuit that cut charge current. so charge over 100% only waste your time and electric bill. if you have bad phone, that make your battery overcharge, and that's very2 bad. bump charge maybe can fooling protection circuit, but that's make your battery overcharge.
here is my tips, it will double your battery capacities.
- charge your battery until 100%
- unplug your charger, turn off phone if still on
- go to your local store, and buy new battery
- swap your battery and charge your new battery
ok, that's a joke. but it's a good idea if you far from electric for few days. and if you use your phone for years, buy extra battery after 6 month to 1 year after your phone release is a good idea (if you have extra money of course) because it's cheaper (a lot of supply in market).
Here's the article. http://byrong.com/PowerTesting/
It's pretty long so I'll post the important points here.
Interestingly enough, improvements in battery management technology have compounded the average user’s perception of this problem. Older phones were rather inelegant in their charging behavior; usually filling the battery to capacity and then switching to a trickle current to maintain the highest charge possible. This offered the highest usage time in the short-term, but was damaging the battery over the course of ownership. As explained at Battery University, “The time at which the battery stays at [maximum charge] should be as short as possible. Prolonged high voltage promotes corrosion, especially at elevated temperatures.”[1]
This is why many new phones will “lose” up to 10% within a few minutes of coming off the charger. The reality is that the battery was only at 100% capacity for a brief moment, after which the battery management system allowed it to slowly dip down to around 90%. Leaving the phone plugged in overnight does not make a difference: the phone only uses the wall current to maintain a partial charge state.
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Bump It. Or Should You?
One technique that has gained popularity in the user community is "bump charging." To bump charge a device, turn it off completely, and plug it into a charger. Wait until the indicator light shows a full charge (on the ADR6300, for example, the charging LED changes from amber to green) but do not yet turn the device back on. Instead, disconnect and immediately reconnect the power cord. The device will now accept more charge before saying it is full. This disconnect/reconnect process can be repeated multiple times, each time squeezing just a little bit more into the battery. Does it work?
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The answer, of course, is that bump charging definitely works.
So what does it all mean?
If you absolutely need the highest capacity on a device like this, you will need to bump charge. There are currently people experimenting with "fixes" for this, but I have yet to see one that works. Be warned, however, that repeated bump charging will wear your battery faster and begin to reduce its capacity. If you are a "power user" who will buy a new battery a few months from now anyway, this presumably isn't a concern. If you are an average consumer who uses a device for a few years, I would recommend that you stay away from bump charging. The bottom line is that you don't really "need" to do it unless you are actually depleting your battery to 0% on a regular basis.
If you are someone who can top off your phone on a regular basis, do it. Plug it in when you're at home. Plug it in when you're at your desk. As explained by Battery University, "Several partial discharges with frequent recharges are better for lithium-ion than one deep one. Recharging a partially charged lithium-ion does not cause harm because there is no memory."[2]
Beyond that, the best advice I can offer is to stop paying such close attention to your battery gauge and to just use your phone. Charge it whenever you can, and then stop obsessing over the exact numbers. If you really need more usage time, buy an extended-capacity battery and use it normally.
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Still pretty long, but worth reading.
I don't believe it:''(
Hehehe..:-[:-[:-[
Sent from my GT-S5360 using xda premium
irfanbagus said:
+1
charge more than necessary is a bad idea. if you have good phone, they have overcharge protection circuit that cut charge current. so charge over 100% only waste your time and electric bill. if you have bad phone, that make your battery overcharge, and that's very2 bad. bump charge maybe can fooling protection circuit, but that's make your battery overcharge.
here is my tips, it will double your battery capacities.
- charge your battery until 100%
- unplug your charger, turn off phone if still on
- go to your local store, and buy new battery
- swap your battery and charge your new battery
ok, that's a joke. but it's a good idea if you far from electric for few days. and if you use your phone for years, buy extra battery after 6 month to 1 year after your phone release is a good idea (if you have extra money of course) because it's cheaper (a lot of supply in market).
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Click to collapse
+1 its all just wast our time and decrease the battery life. i think use a tweak script is enough
reyvababtista said:
+1 its all just wast our time and decrease the battery life. i think use a tweak script is enough
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Agree with u :-\:-\
Ive read through XDA that bump charging increases your battery life but reduces the battery's life span
Welcome back stamatis. Yes, if you read my post in the first page it explains how.
Tapatalked.
When I got my one x roughly two weeks ago, battery life wasn't really that good. 8 hours max with a couple of hours of screen time. But I always calibrate my battery. When I got it I charged it for 8 hours then drained it then did the same thing for a whole week just using the phone till the battery runs out and then charge it for 5 hours... Now battery life is very good, EASILY last me through a whole day with moderate to heavy usage. Lots of tapatalk 2, browsing, messaging and emails. I'm also running ARHD rom so that also help but nonetheless battery calibration is important so do it people
Never calibrated or whatever, have excellent (for me) battery life.
I thought we got over this myth.....
OP, do you have some supporting evidence, or even logic, that shows that doing exactly what you shouldn't do with a li-po battery has a positive effect?. Have you A /B tested it against another handset where you treated the li-po battery as recommended? I.E, avoiding fully discharging it and preferably charge from around 50%.
I get up to 4 hours screen time and 4-5 days standby having treated the battery this way with just a handful of total discharges (obviously it not always possible to avoid)
farnsbarns said:
OP, do you have some supporting evidence, or even logic, that shows that doing exactly what you shouldn't do with a li-po battery has a positive effect?. Have you A /B tested it against another handset where you treated the li-po battery as recommended? I.E, avoiding fully discharging it and preferably charge from around 50%.
I get up to 4 hours screen time and 4-5 days standby having treated the battery this way with just a handful of total discharges (obviously it not always possible to avoid)
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Do I have evidence? No I didn't capture any screentshots or anything. This is from my personal experience I'm not here to prove to you anything, just sharing how my battery life is improving cause of battery calibration. My phone no longer display for example 25% then soon as I use it jumps to 19% like before. It decreases gradually and I get excellent battery life. Same thing with my I pad when is discharge it completely then recharge it, I see better battery life and better battery % display accuracy.
barondebxl said:
Do I have evidence? No I didn't capture any screentshots or anything. This is from my personal experience I'm not here to prove to you anything, just sharing how my battery life is improving cause of battery calibration. My phone no longer display for example 25% then soon as I use it jumps to 19% like before. It decreases gradually and I get excellent battery life. Same thing with my I pad when is discharge it completely then recharge it, I see better battery life and better battery % display accuracy.
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Li - po batteries do improve with the first few charge cycles but this has nothing to do with the fact you have run it flat. Doing so regularly will shorten the life of the battery. You stated that it had a positive effect but you have no comparison and it flys in the face of the laws of physics and chemistry. The point of my post was to make it clear to anyone who doesn't know better that it's bs and will be detrimental to battery life.
Though LiPo batteries don't like to be overly discharged, I'd stop short of saying that this is detrimental to your battery. LiPo batteries shouldn't be left at low voltage (dead) for long periods of time, but discharging it entirely and then recharging it is well within the designed specs of the battery. It's more the fact that they lose charge over time, and therefore leaving them dead which is considered their minimum safe voltage, will then allow them to drain further themselves over time to a point where it's detrimental. I suppose, though, a battery drained to 0% every single time is more likely to have a shorter life than a battery discharged only to 20% before recharging.
The Android system does calibrate the battery life, which is more of what you'd be doing, but you aren't going to get more battery life out of a battery by discharging it entirely, then charging it fully, it just doesn't work like that. LiPo batteries don't have issues with memory or needing to be discharged or charged to a certain point for optimum performance.
I 100% attribute bad battery life when you first get a phone to simply being you pulling it out and turning it on more than you normally would. It's nearly impossible, and damn near subconscious, but when you get a new toy, you're obviously going to pull it out to look at it, play with it, load every different app it has, etc, as well as doing the same when you show it to people. I think even if you think you didn't play with it a lot when you first got it, you likely still do. But that's just my opinion.
https://plus.google.com/u/0/105051985738280261832/posts/FV3LVtdVxPT
read that calibration not needed
AJerman said:
Though LiPo batteries don't like to be overly discharged, I'd stop short of saying that this is detrimental to your battery. LiPo batteries shouldn't be left at low voltage (dead) for long periods of time, but discharging it entirely and then recharging it is well within the designed specs of the battery. It's more the fact that they lose charge over time, and therefore leaving them dead which is considered their minimum safe voltage, will then allow them to drain further themselves over time to a point where it's detrimental. I suppose, though, a battery drained to 0% every single time is more likely to have a shorter life than a battery discharged only to 20% before recharging.
5
The Android system does calibrate the battery life, which is more of what you'd be doing, but you aren't going to get more battery life out of a battery by discharging it entirely, then charging it fully, it just doesn't work like that. LiPo batteries don't have issues with memory or needing to be discharged or charged to a certain point for optimum performance.
I 100% attribute bad battery life when you first get a phone to simply being you pulling it out and turning it on more than you normally would. It's nearly impossible, and damn near subconscious, but when you get a new toy, you're obviously going to pull it out to look at it, play with it, load every different app it has, etc, as well as doing the same when you show it to people. I think even if you think you didn't play with it a lot when you first got it, you likely still do. But that's just my opinion.
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The dtremental effect will be minute, accepted, but there is certainly nothing to gain. That's what I wanted to make clear.
There is a lot of guesses portrayed as fact on here these days, as well as conclusions drawn from dubious experience with no control or comparisons. Just trying to combat this misinformation.
farnsbarns said:
The dtremental effect will be minute, accepted, but there is certainly nothing to gain. That's what I wanted to make clear.
There is a lot of guesses portrayed as fact on here these days, as well as conclusions drawn from dubious experience with no control or comparisons. Just trying to combat this misinformation.
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I know what you mean. I usually get yelled out when I try to do that and help, haha.
farnsbarns said:
Li - po batteries do improve with the first few charge cycles but this has nothing to do with the fact you have run it flat. Doing so regularly will shorten the life of the battery. You stated that it had a positive effect but you have no comparison and it flys in the face of the laws of physics and chemistry. The point of my post was to make it clear to anyone who doesn't know better that it's bs and will be detrimental to battery life.
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It flys in the face of the laws of physics??!!!??? What the hell are you talking about? I'm talking about my battery life getting better and better cause of draining it and recharging it not the gravity of the moon or Einstein theories, relax.
farnsbarns said:
The dtremental effect will be minute, accepted, but there is certainly nothing to gain. That's what I wanted to make clear.
There is a lot of guesses portrayed as fact on here these days, as well as conclusions drawn from dubious experience with no control or comparisons. Just trying to combat this misinformation.
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LMAO, get out of your basement.
AJerman said:
I know what you mean. I usually get yelled out when I try to do that and help, haha.
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Yep, I just don't care if the truth means a fan of cereal box science gets their knickers in a twist. More than half of what gets posted now is erroneous guess work, assumptive, misleading noise that serves no purpose other than to dilute the factual helpful discussion.
I've never been much good at biting my lip.
farnsbarns said:
Yep, I just don't care if the truth means a fan of cereal box science gets their knickers in a twist. More than half of what gets posted now is erroneous guess work, assumptive, misleading noise that serves no purpose other than to dilute the factual helpful discussion.
I've never been much good at biting my lip.
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That's fascinating..... I wonder where that battery calibration thing started in the first place, I guess someone made that up just to mess with people right?
barondebxl said:
That's fascinating..... I wonder where that battery calibration thing started in the first place, I guess someone made that up just to mess with people right?
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For batteries that needed calibration? And as I said, a lot of people confuse calibrating the battery meter in the OS with calibrating the battery itself.
Read, learn: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
AJerman said:
For batteries that needed calibration?
Read, learn: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
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Read this, point 2.
http://osxreality.com/2009/07/18/4-tips-to-extend-your-lithium-battery-life/
To all of you who say that using up your battery shortens it's life, I have just one thing to say: the phone will never let you fully discharge the battery. Approx. 3.5V at which the phone turns off is far from the voltage of fully discharging (and potentially damaging) the battery.
Sent from my HTC One X using xda premium
barondebxl said:
Read this, point 2.
http://osxreality.com/2009/07/18/4-tips-to-extend-your-lithium-battery-life/
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As I said, this has nothing to do with calibrating the battery, and everything to do with calibrating the battery meter in the OS, which, by the way, will never be off by HOURS, maybe by a couple of minutes. This only needs to be done once every however many cycles, that site says 30, but I wouldn't even bother doing it more than once every couple of months at the most as you likely won't see any real gain from doing so, and it IS theoretically bad to overly discharge your phone. Doing it once in a while won't damage anything, but doing it every cycle, or every day for a week or anything like that is excessive, unnecessary, and, as farnsbarns mentioned, can wear on your battery.
Battery meter calibration has been discussed on this message board countless times, and every time it's proven to be nearly pointless in real tests.
Edit: This is not to mention that I think a lot of batteries/phones have charging circuits built into them that allows them to properly check the battery level itself, meaning calibration of the OS isn't necessary. I could be wrong on this, but I'm pretty sure I've read about this before.
AJerman said:
As I said, this has nothing to do with calibrating the battery, and everything to do with calibrating the battery meter in the OS, which, by the way, will never be off by HOURS, maybe by a couple of minutes. This only needs to be done once every however many cycles, that site says 30, but I wouldn't even bother doing it more than once every couple of months at the most as you likely won't see any real gain from doing so, and it IS theoretically bad to overly discharge your phone. Doing it once in a while won't damage anything, but doing it every cycle, or every day for a week or anything like that is excessive, unnecessary, and, as farnsbarns mentioned, can wear on your battery.
Battery meter calibration has been discussed on this message board countless times, and every time it's proven to be nearly pointless in real tests.
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Nothing to do with battery calibration? Have you read the article? If you want accurates readings, you want your battery life to improve, you probably want to calibrate your battery. I've had the one x for almost two weeks and my phone doesn't jump from 50% to 42% randomly anymore cause I've calibrated the battery. If you want more reading : http://www.themobileindian.com/news/5547_How-to-calibrate-smartphone-battery
No one here said that it is something you need to do everyday, but when you get your phone I suggest doing it. Then once it's calibrated do it once a week or every other week.
AJerman said:
Edit: This is not to mention that I think a lot of batteries/phones have charging circuits built into them that allows them to properly check the battery level itself, meaning calibration of the OS isn't necessary. I could be wrong on this, but I'm pretty sure I've read about this before.
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they do have charging circuits I just read it, still you want accurate readings. Even my iPad sometimes displays wrong battery percentage when I don't let it discharge. Sometimes I charge it when it's at like 28% for example, let it fully charge but then it drains weirdly.
barondebxl said:
Nothing to do with battery calibration? Have you read the article? If you want accurates readings, you want your battery life to improve, you probably want to calibrate your battery. I've had the one x for almost two weeks and my phone doesn't jump from 50% to 42% randomly anymore cause I've calibrated the battery. If you want more reading : http://www.themobileindian.com/news/5547_How-to-calibrate-smartphone-battery
No one here said that it is something you need to do everyday, but when you get your phone I suggest doing it. Then once it's calibrated do it once a week or every other week.
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You are failing to listen to what I'm saying. I've read the article, and many others like it. There is no such thing as calibrating Lithium batteries, and it's a common misconception, so I have full faith that you can find countless web pages telling you you can. It comes from the old mindset of batteries that did need certain charge cycles (full discharge, full charge, etc) to maintain life.
Again, the only thing you calibrate when you run the battery all the way down is the OS's battery meter. Android shuts itself down automatically when battery voltage hits a level that is considered empty or dead, regardless of what the battery meter says, so that calibration gives you no more life out of your battery at all.
However, I think we all run down our phones to the point where they auto shutdown more than frequently enough to consider the battery meter calibrated very close at any given time. Battery meter calibration is more an issue on systems that stay plugged in frequently and don't often get discharged, this is usually with laptops used as a desktop replacement, not phones.
We aren't trying to be mean or anything, just trying to squash the continued misconception that calibrating the battery is possible or has any effect.