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I have a dft desire nand running with magldr. Im having serious battery drainage. I let it die. Charged it. Let it die again and then charged it again. Even then the battery life is only around 3 hours and its down to 5%. I use it but the only things I use is facebook, xda and aim.
Any suggestions?
Sent from my HTC HD2 using XDA App
eyeisdasteve said:
I have a dft desire nand running with magldr. Im having serious battery drainage. I let it die. Charged it. Let it die again and then charged it again. Even then the battery life is only around 3 hours and its down to 5%. I use it but the only things I use is facebook, xda and aim.
Any suggestions?
Sent from my HTC HD2 using XDA App
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1. Try other builds.
2. How old odd your battery? Genuine?
3. Search and read up on this topic.
I decided to try setcpu. Which I downloaded here. Its helping some. Its been about an hour and its gone down like 5%. So thats atleast a little better. Im gonna mess with the settings and find something I like. Im do some more research too.
Sent from my HTC HD2 using XDA App
Have you tried turning off
Settings>Display>Auto-Rotate,Autobrightness
Settings>Location&Security>Use Wireless Network and Use GPS satellites
Settings>Accounts&Sync settings>Background Data and Auto-Sync
Settings>Mobile Networks> Data Enabled and instead of having 3G on set it for 2G
When I do this I can get a whole days use out of my phone and only turn them on when needed. Try that out and see if it helps bro
I didnt realize some of those were still on. I was pretty sure I shut almost all of those off but your post made me go check. Haha. Guess not. Thanks man.
Sent from my HTC HD2 using XDA App
eyeisdasteve said:
I didnt realize some of those were still on. I was pretty sure I shut almost all of those off but your post made me go check. Haha. Guess not. Thanks man.
Sent from my HTC HD2 using XDA App
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Try other builds or you can also install Current Widget from market and view your mA useage, enable log and then you can keep an eye on it and see what the minimum useage is. It should be around 1-5 in standby, if not then you have something running that is eating up battery.
If it is at 1-5 mA and you still have battery drain then it could be your battery on the fritz.
Problem is that allot of people tend to stick them on charge before they are drained properly or also do not let it charge fully. Some battery type's have a sort of memory and if you dont charge/discharge properly it can affrect overall battery life.
There is MANY thrteads on battery issues but really this shouldnt be an issue anymore as majority of ropms have great battery life. Also remember that Android is a battery hog even on native devices.
So check out some threads and try some solutions.
eyeisdasteve said:
I have a dft desire nand running with magldr. Im having serious battery drainage. I let it die. Charged it. Let it die again and then charged it again. Even then the battery life is only around 3 hours and its down to 5%. I use it but the only things I use is facebook, xda and aim.
Any suggestions?
Sent from my HTC HD2 using XDA App
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Please don't let your battery discharge completely. If it does you will ruin the battery.
dkl_uk said:
Please don't let your battery discharge completely. If it does you will ruin the battery.
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this is not true mate not true at all, ive let my battery discharge completely a few times and it's still in perfect condition.
jonny68 said:
this is not true mate not true at all, ive let my battery discharge completely a few times and it's still in perfect condition.
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I don't doubt that at all after a 'few times'.
However, since I can't be arsed typing out my own explanation, how about I paste you one from the experts.
"Avoid completely discharging lithium-ion batteries
If a lithium-ion battery is discharged below 2.5 volts per cell, a safety circuit built into the battery opens and the battery appears to be dead. The original charger will be of no use. Only battery analyzers with the boost function have a chance of recharging the battery.
Also, for safety reasons, do not recharge deeply discharged lithium-ion batteries if they have been stored in that condition for several months."
Also:
"Unlike NiCad batteries, lithium-ion batteries do not have a charge memory. That means deep-discharge cycles are not required. In fact, it’s better for the battery to use partial-discharge cycles.
There is one exception. Battery experts suggest that after 30 charges, you should allow lithium-ion batteries to almost completely discharge. Continuous partial discharges create a condition called digital memory, decreasing the accuracy of the device’s power gauge. So let the battery discharge to the cut-off point and then recharge. The power gauge will be recalibrated."
So as long as you were hitting the 30-charge-and-dump schedule, you'll be ok.
You need to run this app every time you flash a new rom to correct your batterystats.bin file. The batterystats is what dictates how long your phone should be on from the battery. This app deletes the .bin and allows it to be replaced thus conditioning your battery like you were supposed to do when you got the phone. Note: Doing this too many times without flashing a rom or without severe battery drain issues CAN shorten the life of your battery (I know from experience) So please don't do something stupid.
Instructions: Charge to 100%, Run the battery calibration, allow to die COMPLETELY and then recharge to a full 100% (no trickle charging)
Market link: https://market.android.com/details?id=com.nema.batterycalibration&feature=search_result
It's free.
Indirect said:
recharge to a full 100% (no trickle charging)
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so it wont work right if I have an SBC kernel?
You shouldn't need an SBC kernel if you are planning on doing this. However it should still work, just make sure it's at a full 100% oh and also, SBC damages your battery after prolonged use.
Indirect said:
It's free.
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You're free.
mattykinsx said:
You're free.
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Only for you Matty.
Indirect said:
You shouldn't need an SBC kernel if you are planning on doing this. However it should still work, just make sure it's at a full 100% oh and also, SBC damages your battery after prolonged use.
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So we should not get a 10% battery drain from unplugging this if we do this correctly? or this will just prolong the battery life from 90-94% on after unplugging??
I've tried doing this but never 100% fully let it drain and then charged 100% lol...
And do you charge while phone is off? wait until green light comes on?
I'm still getting terrible battery life. 25% drained in 1 hour, and it's just idle with the display on at 50% and wifi/data connection enabled. I have a static background image and I don't have any fancy widgets or anything.
To give more detail, I'm running Synergy RLS-1 (no godmode) with aggressive freedom kernel. I have SetCPU with min/max 128/883.
Well, its going to be a quick drain until a few charge cycles ii got 24 percent drain in 2 hours then it leveled off for me.
Going on 18 hours of battery life if not more right now, I think this works since before, I only had 8-10 hours of moderate use.
17h48m26s
Sent by breaking the sound barrier
jbrawley1 said:
So we should not get a 10% battery drain from unplugging this if we do this correctly? or this will just prolong the battery life from 90-94% on after unplugging??
I've tried doing this but never 100% fully let it drain and then charged 100% lol...
And do you charge while phone is off? wait until green light comes on?
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I do all of this while the phone is on just to be sure there are no false stats entered. But I'm sure you can charge while it's off.
Update on my battery life: It's probably going to be roughly 19 hours until it dies. 7% and I have 18h 35m 17s So this shows that this works undoubtedly if done correctly.
Indirect said:
You shouldn't need an SBC kernel if you are planning on doing this. However it should still work, just make sure it's at a full 100% oh and also, SBC damages your battery after prolonged use.
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This is an opinion.
I have used SBC for months now and its great.
No damage has been done.
johnylovejoy said:
This is an opinion.
I have used SBC for months now and its great.
No damage has been done.
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Agreed. Been using an SBC kernal since Feb and not a bit of damage or loss of battery life.
I've never met someone that won the lottery, doesn't mean people don't win the lottery.
Indirect said:
Well, its going to be a quick drain until a few charge cycles ii got 24 percent drain in 2 hours then it leveled off for me.
Going on 18 hours of battery life if not more right now, I think this works since before, I only had 8-10 hours of moderate use.
17h48m26s
Sent by breaking the sound barrier
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Is it going to gradually increase with each charge cycle, or am I going to notice a big change eventually? I'm on my second cycle (after calibration) and it's still draining like mad. :\
I went a full 19 hours so you should notice a large change eventually if not, I think your battery might be bad?
Alright. I hope that's not the case!
Indirect said:
You shouldn't need an SBC kernel if you are planning on doing this. However it should still work, just make sure it's at a full 100% oh and also, SBC damages your battery after prolonged use.
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No damage whatsoever.
Sugar, Spice, and everything Nice!!!
knowledge561 said:
No damage whatsoever.
Sugar, Spice, and everything Nice!!!
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And you base that on?
mattykinsx said:
And you base that on?
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Polls. Good day.
Sugar, Spice, and everything Nice!!!
knowledge561 said:
Polls. Good day.
Sugar, Spice, and everything Nice!!!
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Click to collapse
I bet if I took a poll on here the overwhelming majority of people would click "no" to:
Do you know someone that has won the lottery?
Doesn't mean it doesn't happen.
The mere suggestion that because something hasn't happened to you, or that some online poll says it hasn't happened so it must not, is absurd. At best.
No, I'm not suggesting that SBC kernels cause phones to explode.
But there's a lot of data supporting the idea that they can cause long term damage.
Battery's are not supposed to be filled and kept at their maximum for a reason.
And that reason isn't because the manufacturer wants your battery to drop to 90% as soon as you take it off the charger.
I checked my battery monitor widget today am noticed something very strange. It showed me 40% charged when I was sure it was only 35% charged before I went bed! WTF did it charge itself? As you can see from the screenshots the phone was not on charge and was awake for most of the night which has never happened before. I have not installed any new apps in the last few days I have never seen this before on any of my android phones over the years. After 1 month of using the note this is the first glitch i've noticed (if it is a glitch). I am on stock LA4.
Anyone have any ideas as to why this happened?
I'm not complaining ( wish it happened every night!) just curious.
I have noticed the same strange thing with ICS.
did you try pinching your arm?
/Jeriz
It is probably/maybe your battery stats that was not exactly "right" and might "recalibrate" your battery stats to the true value.
The simplest answer is always the true one: It is having trouble reading your battery right. Happens with mine too sometimes.
LOL I had the same thing happened to me.
First day with my note. And so far I am loving it.(despite colour rendering issues , and a very lagging stock keyboard)
Sent from my GT-N7000 using xda premium
Maybe the phones are evolving and learning to use the sensor on the Front to charge itself lol
Sent from my Galaxy Note
This has happened to me several times already since the Galaxy S days.. sometimes after a reboot the battery looses 50% and slowly charges back up its quite funny and strange, never happened to my note though.
What do you think happens if some of the services is not needed anymore and stopes relaying,the battery % estimation will go up.
georgios73 said:
I checked my battery monitor widget today am noticed something very strange. It showed me 40% charged when I was sure it was only 35% charged before I went bed! WTF did it charge itself? As you can see from the screenshots the phone was not on charge and was awake for most of the night which has never happened before. I have not installed any new apps in the last few days I have never seen this before on any of my android phones over the years. After 1 month of using the note this is the first glitch i've noticed (if it is a glitch). I am on stock LA4.
Anyone have any ideas as to why this happened?
I'm not complaining ( wish it happened every night!) just curious.
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Mine charged itself too.
Went from 30% to 50% when I was out.
I thought it has some solar panel hidden beneath.
hagba said:
What do you think happens if some of the services is not needed anymore and stopes relaying,the battery % estimation will go up.
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Wtf are you talking about? That's not any kind of estimate of lifetime, that's a report on amount of energy left. And in this case, specifically, a bug in it's reading.
Livewings said:
Mine charged itself too.
Went from 30% to 50% when I was out.
I thought it has some solar panel hidden beneath.
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Click to collapse
That one a good idea. Smartphone company should consider to put it in every phone in future..lol
Sent from my GT-N7000 using XDA App
When I saw this thread, I immediately opened my battery stats only to see this:
lulz
Viamonte said:
Wtf are you talking about? That's not any kind of estimate of lifetime, that's a report on amount of energy left. And in this case, specifically, a bug in it's reading.
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Click to collapse
You need to review your facts make a bit more research, the report is based on the fact that how many apps and services are you using,say if the wifi is on, it will show you certain %, however if you turn it off will report you that it has increased, depending on the running apps and services how much battery is left, my laptop does it all the time,unless you are living in pre Smart Battery Meter era.
I have to agree that if the % relies on the voltage (as I am sure it must do to some extent, but I am only guessing), stopping heavy services will allow the voltage to increase and the app may see that as a gain.
Alternatively we have discovered Samsung's secret OTA charging method! This explains why some phones have terrible battery life, they are being sucked dry by nearby 'Vampire Notes'!
Now, if we could just work out how we could charge all Notes by sucking iPhones dry ....
turshija said:
When I saw this thread, I immediately opened my battery stats only to see this:
lulz
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Mega wtf. :O
Sent from my GT-N7000 using xda premium
Battery is trolling
The Galaxy Note battery is a three terminals battery. So I think that the % state of charge of this battery is directly calculated from its output voltage.
The voltage decrease as the charge decrease, so it is possible to evaluate the residual charge in the battery.This is not a very precise method but it is quite simple to implement.
After a high current drain there is what is called a ''voltage recovery'', the battery voltage increase slowly a little bit as the current is stopped. So you may think that the battery get back energy, but unfortunately it is only an artifact.
Yesterday I showed you all how my battery indicated that it had charged itself.
So guess what folks today when I checked the complete opposite happened!!
Again as you can see it went from 48% just before I went to sleep only to wake up to a dead phone (switched off). Upon rebooting it showed only 9% !!
Now I can cope with it going up but going down is not good.
Hope its not a hardware problem and just a faulty battery.
lets see what happens tomorrow maybe it will explode!
I'm an EE (election engineering) student. Michel_7 is right. Lithium ion batteries experience a voltage sag during high current draws. Afterwards there is some rebound, both as the battery cools if over temp, and with a period of lower activity. This is in part due to the fact that batteries have internal resistance, and as they supply power, they also dissipate some internally. This is of squared proportion to the current drawn. IE current^2 * resistance. Battery resistance constant, so the more power the phone uses, the more the battery does. This is what heats up the battery.
Sent from my GT-N7000 using xda premium
This is particularly true for those who are un-rooted and on Stock where wiping battery stats is not available.
I bought my N4 on 1st of Feb, and the first two charge cycles, when the phone powered off due to the OS reporting the battery at 0%, I was unable to power it back on. This is great, as the phone battery is truly empty!
Some charge cycles later, my phone would power off due to the OS reporting 0% - however, I would feel as though the battery didn't last as long as I was used to.
So to make sure the battery is truly dead... I boot into fastboot mode by pressing Volume Down and Power on straight after it shut itself down. The phone stayed on for a further 27mins, bearing in mind that in this mode, the screen is on full brightness and always on. 27mins of screen on time for a phone that manages only about 4hrs of screen on time at best, is a considerable amount of left over juice in the battery that the OS is missing out on.
Normally to correct this, we charge up to 100% and wipe battery stats in CWM.
[GUIDE]
I have found that to leave the phone on in fastboot mode until it drains the battery out completely, plug in your charger, then boot into Android, would show the battery at 0% - this is a TRUE 0%... charge it all the way up to 100% and you should have back your full battery performance. Don't forget to allow the 99% - 100% time. This is very important - It will make it to 100% eventually, be patient.
This is all based on my assumptions/guestimates/theory - please do comment and correct if you are the wiser. [though for now, it works flawlessly]
OT - This does highlight a flaw in the OS however, it's a problem with all Android devices, will they ever fix it?
You're just calibrating the battery. I'm sure most of us already let it die without needing t enter fast boot.
Sent from my Nexus 4 using Tapatalk 2
scream4cheese said:
You're just calibrating the battery. I'm sure most of us already let it die without needing t enter fast boot.
Sent from my Nexus 4 using Tapatalk 2
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Also, you should not drain it to such an extent. If a battery ever reaches true zero, it won't turn on again or charge. The phone turns off (says zero) around an actual 5% because they don't want you to destroy your battery
Sent from my Nexus 4 using xda premium
Censura_Umbra said:
Also, you should not drain it to such an extent. If a battery ever reaches true zero, it won't turn on again or charge. The phone turns off (says zero) around an actual 5% because they don't want you to destroy your battery
Sent from my Nexus 4 using xda premium
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Exactly.
Sent from my Nexus 4 using Tapatalk 2
Censura_Umbra said:
Also, you should not drain it to such an extent. If a battery ever reaches true zero, it won't turn on again or charge. The phone turns off (says zero) around an actual 5% because they don't want you to destroy your battery
Sent from my Nexus 4 using xda premium
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These are Li-Po batteries
scream4cheese said:
You're just calibrating the battery. I'm sure most of us already let it die without needing t enter fast boot.
Sent from my Nexus 4 using Tapatalk 2
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I guess I wasnt clear or there was a misunderstanding... I let it die, reaches 0% and starts to power off, I then boot it into fast boot mode, and find the battery with at least another 30mins of screen on time. This extra battery is what I'm trying to calibrate back into the OS stats.
Censura_Umbra said:
Also, you should not drain it to such an extent. If a battery ever reaches true zero, it won't turn on again or charge. The phone turns off (says zero) around an actual 5% because they don't want you to destroy your battery
Sent from my Nexus 4 using xda premium
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Good observation, always worthwhile hearing other opinions. I would say though, that 30mins of screen on time would be more than 5%.
I'm in my experience, the phone was fully dead after leaving it on in fastboot mode, battery all out. Then I plugged it into the charger, I got a flashing red light, and then the battery charge icon appeared. I then booted up and the OS reported a true 0%. This charge cycle, since I did this I'm at 28hrs with 20% to go with everything on [Wifi etc]
But so far, it's been a great way to get the most out of the battery.... lets get some more opinions, good or bad..
All thoughts welcome!
The flaw in this argument is that wiping battery stats in recovery does absolutely nothing.
Sent from my Nexus 4 using Tapatalk 2
joshnichols189 said:
The flaw in this argument is that wiping battery stats in recovery does absolutely nothing.
Sent from my Nexus 4 using Tapatalk 2
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If that really is the case, then surely that makes this approach even more convincing as something that "works" in maintaining good battery life!
Vyker said:
I guess I wasnt clear or there was a misunderstanding... I let it die, reaches 0% and starts to power off, I then boot it into fast boot mode, and find the battery with at least another 30mins of screen on time. This extra battery is what I'm trying to calibrate back into the OS stats.
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You can't drain the battery fully when its on because the device has protection against draining the battery to a point which will damage it. In fast boot this control is not in place.
Is this worth doing? No. Our battery aren't replaceable and shortening its life to gain 5% is not worth it.
jhericurls said:
You can't drain the battery fully when its on because the device has protection against draining the battery to a point which will damage it. In fast boot this control is not in place.
Is this worth doing? No. Our battery aren't replaceable and shortening its life to gain 5% is not worth it.
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I understand, good point, however we're not talking about just 5% here!
Explain how I was able to get an additional 30 mins screen on time!
Sent from my Nexus 4 using xda app-developers app
As skeptical as we can be, a lot of things can affect battery life so the extra 30mins could come from a number of factors.
On another note, I usually get 4-5 hours of screen time on my nexus 4.
Sent from my Nexus 4 using Tapatalk 2
Vyker said:
Explain how I was able to get an additional 30 mins screen on time!
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Because it takes much less battery on fastboot mode? Radios don't need to be on , brightness is minimal, only 1 CPU runs at lowest frequency, flash memory is not powered on?
To have a logical argument here, we must know how long fully charged battery lasts under fastboot.
And in agreement with many other voices, I don't think draining battery obove manufacturer threshold is a brilliant idea.
Sent from my Nexus 4 in a Faraday cage
This is curious. It's been this way for about a day or so. No actual battery life issues that I can tell. No heat or performance issues. Battery calibration?
T-mobile rooted and my only mod is AdAway.
Other than this issue, all is normal.
Thoughts?
Vexamus said:
This is curious. It's been this way for about a day or so. No actual battery life issues that I can tell. No heat or performance issues. Battery calibration?
T-mobile rooted and my only mod is AdAway.
Other than this issue, all is normal.
Thoughts?
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Click to collapse
Someone else reported something like this in another topic. I can't remember what type of V20 they had. My thought was that the battery was bad.
Sent from my LG-H910 using Tapatalk
spexwood said:
Someone else reported something like this in another topic. I can't remember what type of V20 they had. My thought was that the battery was bad.
Sent from my LG-H910 using Tapatalk
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I'm almost 100% certain that it's a calibration issue. 100% software. There were similar issues in a Samsung 6.0.1 ROM as well. Bad battery would be never reporting as "FULL" to the OS. Fortunately, even if it's a bad battery, thank jebus for replaceable battery!
One of the things I'm trying was to pull the battery, hold the power button down to discharge any capacitors in the charging or power circuits and then replaced the battery. Now it shows 89% and charging as well as "collecting battery info... please wait.". I'll let you know if it breaks 94%. I think the calibration was off after going a full day of constant usage but plugged in (drove 10 hours while using Waze).
Definitely a calibration issue. The above method had the predicted effect. Fully charged at 100% again. Spread the word. FYI, I held the power button for a good 30 seconds with no battery in the phone and obviously unplugged.
Peace!
Vexamus said:
I'm almost 100% certain that it's a calibration issue. 100% software. There were similar issues in a Samsung 6.0.1 ROM as well. Bad battery would be never reporting as "FULL" to the OS. Fortunately, even if it's a bad battery, thank jebus for replaceable battery!
One of the things I'm trying was to pull the battery, hold the power button down to discharge any capacitors in the charging or power circuits and then replaced the battery. Now it shows 89% and charging as well as "collecting battery info... please wait.". I'll let you know if it breaks 94%. I think the calibration was off after going a full day of constant usage but plugged in (drove 10 hours while using Waze).
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Well, you see, at first I thought it was a bad battery, but last night, my battery began acting funny. It was at something like 40% and then I did 1 reboot and then battery was at 25%. Then I had to reboot again, and battery was suddenly at 18% and stayed that way for a long time. I decided to try the calibration thing and it may have solved some of my battery issues (I did a few other things too, so not sure exactly what helped). I was always told that battery calibration was no longer necessary. Something about the way that Android reads the voltage of the phone rather than the capacity now... Or something... I forget the technical mumbo jumbo. Anyways, that's one reason I always had been telling people that calibration is just a placebo and that their battery may just be bad. Now I'm not too sure what to think!
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