Database Users

About battery refreshing after flashing - mythbusters

Hi. I was one of the victims of so called battery refreshment after Odin flash.
First of all - assume that you have 30% of the battery when starting to flash, you plug in your phone to the USB then spend around 20 minutes to flash, root, lagfix your phone. After this time your phone is charged to 50-60%.
Really? No.
Looks like the battery in i9000 is working as it was in 3GS - first charging period was the fast charging - not effective. This is what happened - fast battery growth and after unplugging - fast battery drop! (not drain).
You can notice that this extra charged %'s are going down much faster as usual until it will reach the previous value when it slows down to normal (assuming it was 30%).
The only solution with NO magic, no tweaks, things to reset battery stats is to wait until battery dops to the level it should be charged and charge it to the full.
End of the story

I flat out my battery then recharged to full, still not accurate.
I flat out my battery then recharged to full then remove batterystats.bin, still not accurate.
And when I say its not accurate, i mean, the battery indicator in the status bar shows 4/5(more like a 90% to me) full but when i check battery info in settings it shows "70%"

what is the magic point at which the battery should be recharged ?

vosszaa said:
And when I say its not accurate, i mean, the battery indicator in the status bar shows 4/5(more like a 90% to me) full but when i check battery info in settings it shows "70%"
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Click to collapse
as far as I'm aware, that has nothing to do with the battery stats, it's simply an inaccuracy of the firmware.
The process of clearing the stats is done because people experience an unusual drop in battery after flashing new firmwares.

I agree.
Just the process of flashing can also take out of the battery as well considering your using a large amount of processor power to flash and install the new OP.
On top of this the inaccuracies of the firmware battery display I think add to people's concerns that their battery is not working correctly.

vosszaa said:
I flat out my battery then recharged to full, still not accurate.
I flat out my battery then recharged to full then remove batterystats.bin, still not accurate.
And when I say its not accurate, i mean, the battery indicator in the status bar shows 4/5(more like a 90% to me) full but when i check battery info in settings it shows "70%"
Click to expand...
Click to collapse
You need to fully charge the battery, delete the stats THEN flat it.
After you flat it the next charge up and subsequent use will be displayed properly.

Actually it's just that the increments are messed up - 100, 80, 60, 40, 20, 0. So the meter and the percentage look wildly different.
sturmeh said:
You need to fully charge the battery, delete the stats THEN flat it.
After you flat it the next charge up and subsequent use will be displayed properly.
Click to expand...
Click to collapse

vosszaa said:
And when I say its not accurate, i mean, the battery indicator in the status bar shows 4/5(more like a 90% to me) full but when i check battery info in settings it shows "70%"
Click to expand...
Click to collapse
seraerie said:
Actually it's just that the increments are messed up - 100, 80, 60, 40, 20, 0. So the meter and the percentage look wildly different.
Click to expand...
Click to collapse
hey guys, I think this mess is called quantization, en.wikipedia.org/wiki/Quantization

sturmeh said:
You need to fully charge the battery, delete the stats THEN flat it.
After you flat it the next charge up and subsequent use will be displayed properly.
Click to expand...
Click to collapse
Can you tell me how to delete the stats?
Sent from my GT-I9000 using XDA App

lijgame said:
Can you tell me how to delete the stats?
Sent from my GT-I9000 using XDA App
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Click to collapse
Don't do it. It doesn't help at all. The fact that the battery indicator that comes with android (or touchwiz, I'm not sure if it is from vanilla) displays battery differently is because it is programmed that way. The first 50% take only about 1/3 off that and then the last 50% take the rest.
Use battery indicator or something like that if you want to know exact numbers.

Darkstriker said:
Don't do it. It doesn't help at all. The fact that the battery indicator that comes with android (or touchwiz, I'm not sure if it is from vanilla) displays battery differently is because it is programmed that way. The first 50% take only about 1/3 off that and then the last 50% take the rest.
Use battery indicator or something like that if you want to know exact numbers.
Click to expand...
Click to collapse
Thank you.
I will have a try.
Sent from my GT-I9000 using XDA App

[Q] Suddenly Poor Battery

My dad's Droid 2's battery life just took a nose dive about a week ago. He is running the rooted stock 2.2 rom, few widgets on the home screen, no task killing, and he hasn't gotten any apps in the last month (I don't think he knows how). Did his battery just die (unusable, not no capactity) or is there anything I can try?

What I would do, is tell him to get the battery to where the phone wont turn on anymore, its COMPLETELY DEAD. Plug it into the wall until its 100 percent, then drain it down to about 10 percent, then plug it into the wall again. After another complete charge, it should be good again. Its called reconditioning the battery. I do it about once a month.

boogerburns said:
What I would do, is tell him to get the battery to where the phone wont turn on anymore, its COMPLETELY DEAD. Plug it into the wall until its 100 percent, then drain it down to about 10 percent, then plug it into the wall again. After another complete charge, it should be good again. Its called reconditioning the battery. I do it about once a month.
Click to expand...
Click to collapse
I've heard a lot that Lithium-Ion batteries shouldn't be conditioned too often, because they only have so many charge cycles. I'm not expert though. (Don't let this keep you from trying what boogerburns suggested. I could work for you. I'm just stating that Lith-Ion batteries don't like to be drained a lot)
Anyways, the battery could have gotten a bad cell. You can check the battery condition by opening the dialer, and hitting *#*#4636#*#*
This will bring up a menu, and you can choose battery info (or something along those lines) If battery condition is anything but "good" then he'll probably need a bad battery.

boogerburns said:
What I would do, is tell him to get the battery to where the phone wont turn on anymore, its COMPLETELY DEAD. Plug it into the wall until its 100 percent, then drain it down to about 10 percent, then plug it into the wall again. After another complete charge, it should be good again. Its called reconditioning the battery. I do it about once a month.
Click to expand...
Click to collapse
Well, now it's at a point where the battery is dead in only a few hours, so he's "conditioning" his battery once every few hours.
orkillakilla said:
I've heard a lot that Lithium-Ion batteries shouldn't be conditioned too often, because they only have so many charge cycles. I'm not expert though. (Don't let this keep you from trying what boogerburns suggested. I could work for you. I'm just stating that Lith-Ion batteries don't like to be drained a lot)
Anyways, the battery could have gotten a bad cell. You can check the battery condition by opening the dialer, and hitting *#*#4636#*#*
This will bring up a menu, and you can choose battery info (or something along those lines) If battery condition is anything but "good" then he'll probably need a bad battery.
Click to expand...
Click to collapse
I did check on the battery condition somewhere, and it was "good". However, I was wondering if there's a way to check uptime/awake time on the D2. My Inc had bad battery once, and I knew it was a lemon since the uptime was far more than awake time. I'm afraid that a rogue update is sucking my dad's battery.
How can I check my uptime and awake time?

pianoplayer said:
Well, now it's at a point where the battery is dead in only a few hours, so he's "conditioning" his battery once every few hours.
I did check on the battery condition somewhere, and it was "good". However, I was wondering if there's a way to check uptime/awake time on the D2. My Inc had bad battery once, and I knew it was a lemon since the uptime was far more than awake time. I'm afraid that a rogue update is sucking my dad's battery.
How can I check my uptime and awake time?
Click to expand...
Click to collapse
Use the code I posted earlier, and this time select battery history. Select "partial wake" and see if anything is keeping your phone awake. Also look at network usage and see if anything is using that too much.
Alternately, you can download an app called Spareparts from the market (free) and you can get this information more quickly.

WTF my battery is insane... any ideas?

Ok so I can't figure this out. My battery is kind of "retarded" for lack of a better word.
I can charge it up to 100%, reset battery stats (even if I don't the same will happen)... then let it drain. It will drain insanely fast... I mean from 100 to dead in maybe an hour sometimes...
Then I go ahead and plug it into the charger... for just 15 seconds... when I take it off the charger and turn it back on it'll have another 50% battery life, sometimes more sometimes less....
It's almost as if the battery isn't reading correctly and then the phone can't detect how much battery is left so won't let me turn it on unless I plug it in really quick...
Tried another battery and that one does the same thing.... What in gods name could be going on...
and yes.. I searched... before I hear the hit the search 2000x times.

Here is the instructions from the ExROM thread, they worked perfect for me:
Code:
--> For battery life: I think that you have to calibrate your battery.
- Run the device down until it turns itself off.
- Turn it back on and wait for it to turn itself off again.
- Remove the battery for 10 seconds.
- Replace the battery, but leave the device off.
- Charge the device until full and then for another hour.
- Enter recovery and go to advanced -> wipe battery status. Apply it.
- Run the device’s battery down until it turns itself off.
- Turn the device on and charge for at least 8 hours.
- Unplug the device, turn off, then charge for another hour.
- Unplug the device, turn on, wait 2 minutes.
- Turn off again and charge for another hour.
- Restart and use as normal.

I shall try those but who knows...
I've literally been turning the phone on, it dies the minute it hits the lock screen. Plug it in now for just 3 seconds until it says VIBRANT, it will load up shut down.. have down this about 30 times...
I'm lost on how the phone has enough juice to boot and shi*.... it's driving me nuts doing this over and over and over.. oh wait just turned on again and it's at 5%. This is stupid....
lol i will post back after I try these instructions I guess....

You MUST calibrate your battery every time you see a weird behaviour or install a new kernel. You wrote that you tried another battery, so we can exclude a premature death of the battery.

are you able to get into RECOVERY mode and stay there without it rebooting? Or even Download mode?

yo i dont understand.. didnt a google employee go out and make a public statement that batterystats.bin has NOTHING to do with battery calibration, its only used to keep the data from the settings>battery use graph throughout reboots? In the same statement, i think i remember she told aandroid users NOT to let their batteries die and charge em full cause that will damage the batt.
Sent from a cell tower to the XDA server to you.

I made a nice detailed post about this a while back, it took a google employee for people here to believe.
https://en.wikipedia.org/wiki/Memory_effect
(Keep in mind, this applies to NiCad... but the effects are the same)
Bad news bro, your battery is bad. If you full discharge/recharge all the time, it will just hasten its death. Deep cycle charging when the battery is that far gone doesn't really have the same effect.
Try coaxing it back to life by recharging it to 100% then hitting the charger again at 75% a few times. This will increase the capacitance of the battery if there is hope of life. If it doesn't improve, its life is almost over.

younix258 said:
yo i dont understand.. didnt a google employee go out and make a public statement that batterystats.bin has NOTHING to do with battery calibration, its only used to keep the data from the settings>battery use graph throughout reboots? In the same statement, i think i remember she told aandroid users NOT to let their batteries die and charge em full cause that will damage the batt.
Sent from a cell tower to the XDA server to you.
Click to expand...
Click to collapse
Correct. According to her Calibrating does pretty much nothing except make you THINK your battery is better/worse/same.
Haxel said:
I made a nice detailed post about this a while back, it took a google employee for people here to believe.
https://en.wikipedia.org/wiki/Memory_effect
(Keep in mind, this applies to NiCad... but the effects are the same)
Bad news bro, your battery is bad. If you full discharge/recharge all the time, it will just hasten its death. Deep cycle charging when the battery is that far gone doesn't really have the same effect.
Try coaxing it back to life by recharging it to 100% then hitting the charger again at 75% a few times. This will increase the capacitance of the battery if there is hope of life. If it doesn't improve, its life is almost over.
Click to expand...
Click to collapse
thanks for the interesting read, i love reading things that the mind thinks as something for a weird reason.. Placebo effect etc.
Putting your battery down to an absolute 0% will do nothing but hurt your battery. This would have worked if we were still in the 80s and 90s, but these are Li-on batteries, they work differently and it actually hurts them.

Ok so I have RESTORED the battery...
Here is what was going on after further looking. I downloaded a battery stat/drain program to see what exactly was going on...
Under a load the battery mV will change drastically, then once it settles down the mV will actually rise making the % rise...
So I completely killed the battery, I mean dead.. Restarted the phone, plug it in for just a second.. I took it to the point that I killed the SOB battery.
I then charged it up, and while charging I would use the battery drain program. the mV would change drastically and I did this every 10%.
So far so good, the phone has been on for 4 hours now and i've only drained 8%... I will see how it continues.
I've also been resetting my battery stats not because I believe it relates the phone to the actual battery % but the % would fluctuate on the phone, and I thought the phone was saying "batterys dead don't turn on" kind of thing...

Ok. Again.
Here is a more in-detail article with a quick google.
http://www.atomicmods.com/Categories/QandA-Batteries.aspx
How long will these batteries last?
Lithium-based batteries have a lifetime of 2-3 years. The clock starts ticking as soon as the battery comes off the manufacturing line. The capacity loss manifests itself in increased internal resistance caused by oxidation. Eventually, the cell resistance will reach a point where the pack can no longer deliver the stored energy; although the battery may still contain ample charge. Increasing internal resistance is common to cobalt-based lithium-ion. The speed by which lithium-ion ages is governed by storage temperature and state-of-charge. Figure 1 illustrates the capacity loss as a function of these two parameters.
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Click to collapse
Although, there has been arguments for years about Li-ion "memory". Li-ions are not afflicted with the "memory" issues of other chemical types. What they are afflicted with is the inability to hold a consistent current under stress/load with age/oxidation (aging effect of the Li-ion batteries). This is where your battery sits. On the precipice of death. You may get another year or two out of it (if you're lucky.. really more like a few months) with a few correct charging cycles, but that is it.
Bringing a Li-ion to near 0 and back does not help the battery, it is 100% a placebo effect with short term gains at best. A common cause of your particular problem...
Lithium-ion batteries are often exposed to unfavorable temperatures, and these include leaving a cell phone in the hot sun or operating a laptop on the power grid. Elevated temperature and allowing the battery to sit at the maximum charge voltage for expended periods of time explains the shorter than expected battery life. Elevated temperature and excessive overcharge also stresses lead and nickel-based batteries. All batteries must have the ability to relax after charged, even when kept on float or trickle charge.
Click to expand...
Click to collapse
http://batteryuniversity.com/learn/article/how_to_store_batteries
I'm giving random googling as I know it's difficult to believe a random person on the internet. No two type of manufactured batteries are created/engineered the same, but I'm basing my statements of chemical composition and the basic fundamentals of the Li-ion battery tech.

younix258 said:
yo i dont understand.. didnt a google employee go out and make a public statement that batterystats.bin has NOTHING to do with battery calibration, its only used to keep the data from the settings>battery use graph throughout reboots? In the same statement, i think i remember she told aandroid users NOT to let their batteries die and charge em full cause that will damage the batt.
Sent from a cell tower to the XDA server to you.
Click to expand...
Click to collapse
+1
Sent from my SGH-T959 using XDA

Most of these battery calibration techniques sound like a practical joke.
the only way you'll truly get a perfect idea of what your battery life is going to be is to drop the phone in the toilet.
Sent from my SAMSUNG-SGH-T989 using XDA

Battery loses 22% after simple reboot

Usually I may lose one percent after a reboot if any at all. I rebooted my phone with 44% charge only to see 22% charge after the reboot. I then plugged it into the charger 20min later and it rose to 45% in about 2min. I could sit there and watch the charge climb one percentage every few seconds. Wtf is wrong with my battery, RMA time?
Phone is stock everything.

RMA. Your battery is wonky.

Is it normal for these devices to stay at a particular percentage for an extended amount of time and then all at once lose 3-5 percent at one time when the phone has just been unboxed? I've been through several RMAs and this happens every time. If so, does this stop over time?

dralways said:
Is it normal for these devices to stay at a particular percentage for an extended amount of time and then all at once lose 3-5 percent at one time when the phone has just been unboxed? I've been through several RMAs and this happens every time. If so, does this stop over time?
Click to expand...
Click to collapse
In my experience with android devices in general, they have issues like this when new, and when flashing new roms. Usually takes one or two charging cycles for the percentage to start acting normally.

I think the Nexus 4 just has a bad battery meter. If you do end up exchanging for a new one, I'd wait until a newer hardware revision is out and confirmed to fix it

estallings15 said:
RMA. Your battery is wonky.
Click to expand...
Click to collapse
it's not the battery at fault but I wouldn't consider it to be a huge deal unless it really bothers you. Your phone didn't really lose battery. phone just isn't reading the percentage properly.

do a couple of full charge and discharge cycle and it should probably be fine.

lunzi88 said:
do a couple of full charge and discharge cycle and it should probably be fine.
Click to expand...
Click to collapse
I've had this problem a lot since going back to CM10.1. I'll be using my data connection for a bit and my phone will shut off, and when i power it back on (if i can w/o connecting to charger), my battery life is in the red. I also get battery drain when rebooting. Just now I had 50% battery when i booted into recovery and in the top right corner CWM says my battery is 3%. I reboot to system and my battery is at 6%... and RISING.
I will do the complete charging cycles as you suggested to others, and hope that is end of the massive battery loss i've been having.
Is their any benefit to using apps like Battery Calibration to remove batterystats.bin after a full charge, or charging cycles?
...and an off topic question, I've read a couple posts on the Internet saying they recommend you let your phone sit idle for 10mins after flashing a new custom ROM to get the best performance. Is this true or false in your opinion/experience?
Thanks.

dralways said:
Is it normal for these devices to stay at a particular percentage for an extended amount of time and then all at once lose 3-5 percent at one time when the phone has just been unboxed? I've been through several RMAs and this happens every time. If so, does this stop over time?
Click to expand...
Click to collapse
Yes this happens to me also, especially in the morning after a full night's charging my phone loses battery percentage much faster and after few minutes its normal.
Sent from my Nexus 4 using Tapatalk 2

Fix For Battery Jumping Around

1) Charge ur phone while off untill u reach 100%
2)Remove the battery but dont unplug the phone from wallcharger
3)Reinsert the battery, you will see 0%
4) Let the battery charge, when reach 100% power on the phone without unplugging wallcharger.
Now should be all good

you are kidding right ?

This is the one of the worst advices I've heard..... Overcharging the battery is dangerous.
It will actually degrade the batteries performance

I don't know what to say. Does this work?
Also by battery jumping do you mean those crazy drops between reboots or just drops due to lack of deep sleep?

andu86 said:
you are kidding right ?
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Click to collapse
fburgos said:
This is the one of the worst advices I've heard..... Overcharging the battery is dangerous.
It will actually degrade the batteries performance
Click to expand...
Click to collapse
U know how the LIB works? How Android manage the battery?
Try yourself and see! This is not overcharging

sasank360 said:
I don't know what to say. Does this work?
Also by battery jumping do you mean those crazy drops between reboots or just drops due to lack of deep sleep?
Click to expand...
Click to collapse
Btw the drop between reboots

Battery bin tracks the battery usage giving an estimate of the charge been used, battery .bin gets wiped every time it get to 100%, and the tracking of battery's current starts
As I remember lithium batteries charge in two cycles
1- constant current
2- constant voltage near the full capacity.
But then if you trick the phone to read battery as 0% then you are sending more current to an already full battery overcharging.
The jumping of battery percentage is because a bug in the battery "gauge"
But as always if in wrong, my apologies and I'll be more than happy to read your source.

Biggest issue is that the battery has a very poor C-rating, and has huge voltage drops under heavy load. The reboot battery problem comes from this; when you reboot your phone, or other times as well, the heavy usage spike drops the battery voltage down. Android system them detects this low voltage and just assumed the battery is almost empty. Normally there is some averaging going on to remove these spikes, and even then the battery % only goes down, so when the voltage recovers it just shows the same % for longer. Problem when rebooting is that it only sees this low, under load voltage and acts accordingly.
If the voltage isn't low enough so the phone shuts down, you might get 30minutes of screen time while the battery is showing 1%.
My problem is that the last 14% of my battery lasts under a minute before the phone shuts down. So I just treat 15% as actually meaning 1%.
Also, you can't dangerously over charge the battery, it has protection circuitry built in, and the li-ion charger part will detect the real voltage. This "supercharging" does however cost some long term lifetime from it, so it shouldn't be done too often.

Please excuse me, this is long.
Hello guys. I need some advice. I use I9195.
From the past 2 weeks i am facing serious battery drops
while phone is in standby.
I must mention that in the last 2 months my phone accidentally dropped onto marble floor 4-5 times.
Each time i checked to see if everything was working and everything did. But from the last time i dropped i began to notice this battery drain.
I made sure all hardware is working.
No problem with display even after all those drops.
(only minor scratches)
Earpiece, 2 cameras, speaker, mic, wifi, bluetooth all work fine. Network quality is great. This is the behavior with any rom, any modem and any usage.
When in standby, battery drains upto 2-3% every hour.
No background apps/services , wakelocks or anything that keeps device awake. And yet the drop is steep and is solely due to "cell standy".
I have no screenshots but here is a scenario :::
From 98% to 33% in ,
16hrs usage, 1hr33min awake and 1hr16min screen on.
Wifi enable half the time and 3g data was disabled.
EDIT :: New battery did not solve this drain.

Hey guys. Please suggest what should i be doing.
Read post above. Can new battery help ?
Thanks. [emoji29]

Same problem here i also need help.
From GT-I9192.
My phone dropped 5-6 times and .org works fine now.

NihAl HarvarD said:
Same problem here i also need help.
From GT-I9192.
My phone dropped 5-6 times and .org works fine now.
Click to expand...
Click to collapse
what do you mean by "" .org works fine now ""

Typo