[Q] Need full battery before flashing? - Verizon Samsung Galaxy S III

Hey all. Thanks in advance. I have searched.
On my old moment, everyone was absolutely firm that you needed to charge your battery to 100% before flashing a new ROM. If you did not, the battery would lose performance as the ROM would assign 76% (or whatever your battery was at) as the new 100%.
In any case, just wondering if the S3 is the same thing. I would love to flash the new synergy, but I am at 54%... :crying: Some of the posts I have read suggest that I do not have to be at 100% just to have ample charge to make it though the flashing process...
So should I wait until 100%?

Is that the same as resetting your battery stats? If yes, it's been debunked. Flash away.
Sent from my SCH-I535 using xda app-developers app

ed hit said:
Hey all. Thanks in advance. I have searched.
On my old moment, everyone was absolutely firm that you needed to charge your battery to 100% before flashing a new ROM. If you did not, the battery would lose performance as the ROM would assign 76% (or whatever your battery was at) as the new 100%.
In any case, just wondering if the S3 is the same thing. I would love to flash the new synergy, but I am at 54%... :crying: Some of the posts I have read suggest that I do not have to be at 100% just to have ample charge to make it though the flashing process...
So should I wait until 100%?
Click to expand...
Click to collapse
No, I've flashed at like 10% and everything has ran fine, the only problem I would imagine happening is if the battery runs out while flashing.
Sent from my SCH-I535 using xda app-developers app

Thanks to both! I have flashed away!

Hah! I flashed the other day at 3% and didn't catch it till it was already rebooting. Luckily I know that when I flash, which is just just about every day, that it only takes about 1 minute anyways!
Sent using Tapatalk

On the droid x, there's no way to boot into recovery from a powered off state. If you flashed a rom and it didn't work (which happened a lot) and had a low battery, you would either have to charge externally or use a different battery. People would freak when it happened for the first time.
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Related

is my phone or battery broken?

This is my second captivate that I got to replace my other one. The other one had amazing battery life and now that I have the new one, it" sucks".
Sent from my GT-I9000 using XDA App
Yes definitely broken, burn it
Right. Someone who owns half a brain please respond.
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Guy, how about some details? Your sig says gti900 so your not on stock. How can any one help you with what you posted. Are you using the exact same configuration that you had on your last phone?
oh.... You hurt my feelings by the way
Same setup, actually with out the iverclock too. Im running phoenix now percison.
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You are killing me
When did you flash
Have you calibrated your battery
Are you using the same kernel, modem
what have you tried to improve battery
How long does your phone last on full charge
Some details
mcord11758 said:
You are killing me
When did you flash
Have you calibrated your battery
Are you using the same kernel, modem
what have you tried to improve battery
How long does your phone last on full charge
Some details
Click to expand...
Click to collapse
Yes. Same everything. Tried calibrating battery. Everything that drains is off. Is it a faulty unit?
Sent from my GT-I9000 using XDA App
There its always a chance
If your phone last 8-10 hrs then no you can improve by playing around. If it last like 5 hrs and you have calibrated and have gone through a couple bat cycles then maybe there is an issue.
Chances are, you need to play around
mcord11758 said:
There its always a chance
If your phone last 8-10 hrs then no you can improve by playing around. If it last like 5 hrs and you have calibrated and have gone through a couple bat cycles then maybe there is an issue.
Chances are, you need to play around
Click to expand...
Click to collapse
I know, im working on it, but I don't think it will do anythong
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Thunderbolt not displaying battery

Hey guys I'm on the newest version of virus rom and my battery will just stay at,say,89% unless a reboot is performed. Any way to fix this?
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I had that problem with the standard debloat Rom. New rom seems to update all the time.
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Try this for a fix https://market.android.com/details?id=com.nema.batterycalibration
Thanks ima try it.
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Grr not working
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Anyone?
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I really believe the battery display is an os issue. That's why I'm waiting to root.
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Ugh whatever I guess ill know when to charge it when my battery dies.....
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Same thing here... only happens when I use the extended battery.
psufan5 said:
Same thing here... only happens when I use the extended battery.
Click to expand...
Click to collapse
same problem as it only happens when i use the extended battery. i am trying out battery left widget no clue if it will help or calculate a good reading for me but its calibrating as i just tried it out today.
all the battery wipes in the world will not reset it and help
I get inaccurate info. Seems when i reboot my phone i loose 10-15% charge and it happens all the time. - Extended battery
sent though PNB Rapid Remit through my Thunderbolt
I was having the same issue with my battery meter sticking. The same time this happens, my Setcpu app also was sticking and would full throttle the cpu. Im running the VirusRom right now, but have experienced this problem on a few of the other Roms also. My usual fix was just wipe everything and go with new install. It started happening again last night and I followed some posters advice to let the battery totally drain and then shutoff. I then recharged to full and everything seems to be fine again.
The first time it ever started happening was right after I had wiped the battery cache and rebooted. Ive stopped doing that now, but it still happens. I notice now that I usuallly experience this after a series of reboots. Not sure whats up, but draining the battery to zero helped out last night. We'll see in a day or two if it starts happening again.
MrLoompa said:
I was having the same issue with my battery meter sticking. The same time this happens, my Setcpu app also was sticking and would full throttle the cpu. Im running the VirusRom right now, but have experienced this problem on a few of the other Roms also. My usual fix was just wipe everything and go with new install. It started happening again last night and I followed some posters advice to let the battery totally drain and then shutoff. I then recharged to full and everything seems to be fine again.
The first time it ever started happening was right after I had wiped the battery cache and rebooted. Ive stopped doing that now, but it still happens. I notice now that I usuallly experience this after a series of reboots. Not sure whats up, but draining the battery to zero helped out last night. We'll see in a day or two if it starts happening again.
Click to expand...
Click to collapse
Im actually done with ROMs until CM7 is ready. Im just going with a base rooted system and Ill use a custom kernel. Kernel is 99% of the improvement anyway.
Draining works for a day or so, then it does the same thing. I'm stock and it does it. It also does it with the stock battery. Hope they get it fixed with an update.
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Mine actually just stopped working... was working for a week or so and today its just stuck on the same number until i reboot. Pretty annoying.
Bump - anyone find a solution to this? I tried running my extended battery to 0% last night and fully charging it... guess ill see if its fixed today. Pulling it off the charger, it already dropped to 95% lol...
psufan5 said:
Bump - anyone find a solution to this? I tried running my extended battery to 0% last night and fully charging it... guess ill see if its fixed today. Pulling it off the charger, it already dropped to 95% lol...
Click to expand...
Click to collapse
That's because of how it charges not foot into details but that will always happen up to a 10% drop.
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miketoasty said:
That's because of how it charges not foot into details but that will always happen up to a 10% drop.
Sent from my ADR6400L using XDA App
Click to expand...
Click to collapse
Right but my problem was/is the meter never changing. I think I fixed it by completely draining the battery and charging to full. Maybe the phone didnt know how much juice it had because of the different size battery.
yeah i changed to the stock battery last night and it would read fine but i really need this extended
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psufan5 said:
Bump - anyone find a solution to this? I tried running my extended battery to 0% last night and fully charging it... guess ill see if its fixed today. Pulling it off the charger, it already dropped to 95% lol...
Click to expand...
Click to collapse
I cant even get the battery to drop without rebooting....weird
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[Guide] Calibrating Battery {Rooted devices}

*I had this posted over in the nexus forums and decided to move it over here for you guys to see now that I have this device as well*
I found a guide somewhere on the internet on the best way to calibrate battery stats on a rooted device (to fix incorrect battery reporting after flashing) when I had my old hero and I use it a lot to this day when flashing new roms/kernels so I decided to share the best way to do it here.
Step 1.
First and foremost charge the phone to 100%(Even if it says 100% wait about 5 minutes or so just be sure.)
Step 2.
Once it is at 100% go into data/system using your preferred explorer and delete the batterystats.bin file there.
Step 3.
Unplug the charger and reboot to recovery, wipe cache and dalvik cache and wipe battery stats once more while you're there just to make sure they're gone.
Step 4.
Power the phone down and plug it back in. Charge it to 100% while it's off (the battery bar can be deceiving so even once it shows it's full give it five more minutes or so to be sure) and then power up.
Once it is booted to the OS you should now see that the battery bar is at 100%. If not start back at step 1.
Final step.
It had come to my attention that this phone does not have a smart battery so fully discharging it is not a good idea. However I would recommend discharging it to below 20% before recharging. Thanks to hechoen for the info straight from Samsung.
After that you should have a fully calibrated battery and see correct battery stats.
Everybody enjoy! If this helped you please hit thanks!
*Thanks to whoever it was that wrote this up in the first place. If I knew who it was I would give proper thanks.
Sent from my SGH-T959V using xda premium
https://plus.google.com/105051985738280261832/posts/FV3LVtdVxPT
http://forum.xda-developers.com/showthread.php?t=1443108
eollie said:
https://plus.google.com/105051985738280261832/posts/FV3LVtdVxPT
http://forum.xda-developers.com/showthread.php?t=1443108
Click to expand...
Click to collapse
I could care less what that dude says. I know for a fact my battery reporting has gone funky before during flashing and calibrating it fixed it. For instance, it would say 92% and after a reboot it would change to like 94%.
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I just realized that this would be a non-issue if you're using any roms that get installed using AROMA since the /data partition gets formatted with ext4, it'll also wipe the batterystats.bin file, assuming you didn't do a data backup/restore.
FBis251 said:
I just realized that this would be a non-issue if you're using any roms that get installed using AROMA since the /data partition gets formatted with ext4, it'll also wipe the batterystats.bin file, assuming you didn't do a data backup/restore.
Click to expand...
Click to collapse
Ahh. I was unaware of that. Thanks for the info man.
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Its actually not good on these batteries to drain them fully. If your battery readings start going crazy, such as losing 20% charge after a simple reboot, one simple wipe of the battery stats should fix that.
The whole process of charging fully before wiping, draining, recharging fully ect... isn't necessary.
I simply wipe stats once (at whatever my current charge is) and go on my way.
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Joshhayes801 said:
I could care less what that dude says. I know for a fact my battery reporting has gone funky before during flashing and calibrating it fixed it. For instance, it would say 92% and after a reboot it would change to like 94%.
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Click to expand...
Click to collapse
Read through the comments there is some good info. Also this "dude" has boobs so Im sure SHE would rather be called dudette. One more thing, shes also one of the lead programmers on the Android Project.
eollie said:
Read through the comments there is some good info. Also this "dude" has boobs so Im sure SHE would rather be called dudette. One more thing, shes also one of the lead programmers on the Android Project.
Click to expand...
Click to collapse
Word
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Just got off the phone with Samsung to find out whether or not this battery has a fuel gauge chip and it does not. I've assumed for a long time that it was a smart battery and I was wrong. So fully discharging is a bad idea as there is no chip to reset. As far as resetting the battery stats it won't have an effect on life but may correct reporting errors. I personally used to wipe it and then stopped. I have noticed no difference either way.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
hechoen said:
Just got off the phone with Samsung to find out whether or not this battery has a fuel gauge chip and it does not. I've assumed for a long time that it was a smart battery and I was wrong. So fully discharging is a bad idea as there is no chip to reset. As far as resetting the battery stats it won't have an effect on life but may correct reporting errors. I personally used to wipe it and then stopped. I have noticed no difference either way.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Click to expand...
Click to collapse
Very useful information. Thank you. I will edit the op to reflect this information.
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Joshhayes801 said:
I could care less what that dude says. I know for a fact my battery reporting has gone funky before during flashing and calibrating it fixed it. For instance, it would say 92% and after a reboot it would change to like 94%.
Sent from my SGH-T959V using xda premium
Click to expand...
Click to collapse
well, you should at least read a lot to get knowledge about how stuff works... and you obviously did not or you wouldn't call dudette a dude...
unless you have your own custom OS you just fogot step 8 - dance with rain stick around phone when it's charging...
FBis251 said:
I just realized that this would be a non-issue if you're using any roms that get installed using AROMA since the /data partition gets formatted with ext4, it'll also wipe the batterystats.bin file, assuming you didn't do a data backup/restore.
Click to expand...
Click to collapse
I flashed Unnamed with Aroma, full wipe(s) no back ups and i'm having an issue sometimes when I reboot with between 60% - 90% I only have 10% - 20% once rebooted. So I would have to say that does not completely hold true even though it does make perfect sense.
So the "calibration" ritual may not actually calibrate the battery but it definitely is useful when having these issues.
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Heres the deal doing this DOESNT improve battery life. All it does is get rid of "gremlins" in the file.
Better battery stats (that you can get here on xda) will do this for you each time you plug the phone in.
Isn't it a bad thing to completely discharge lithium ion batteries?
NekoNyapii said:
Isn't it a bad thing to completely discharge lithium ion batteries?
Click to expand...
Click to collapse
Short answer yes. Detailed answer see post #9.
NekoNyapii said:
Isn't it a bad thing to completely discharge lithium ion batteries?
Click to expand...
Click to collapse
Yes it is. I was unaware of this before but hechoen brought it to my attention and now the op states that you should not fully discharge.
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wiping battery stats DOES improve battery life!!

If people have been wondering...
I got a 3800mah sedio extended battery like a month ago and so far its been better then standard, when i got home i had about 20% more battery then before.
I thought i wiped my battery stats with app but now it turns out it didnt, i wiped it using CMW and i can already see the improvment.
Normally when I would use it for about 30 minutes moderate usage i would be down to about 94%... Now i only go down to aboit 97-98%
Wiping battery stats is the quicker alternative to using a ROM for a while.
Sent from my I727
How would I go about wiping battery stats? Sorry I'm a noob. Phones rooted btw
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Stang5_o2002 said:
How would I go about wiping battery stats? Sorry I'm a noob. Phones rooted btw
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Click to expand...
Click to collapse
You need to have CWM installed. Instructions are found here:
http://forum.xda-developers.com/showthread.php?t=1340526
To the OP, I dont think it would actually improve battery life. When I had a Motorola I had this issue all the time. When I would get to 1% it would sit there for hours. I would wipe batter stats and it would be more accurate. Giving you the illusion that its better.
What a bunch of BS. delete this nonsense thread.
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I personally thought wiping battery states just let's your phone know the exact battery level if it got messed up. So in theory you aren't getting more battery its just your phone now knows the right right battery level. Lol
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The battery stats is just a file that gives the info in the settings / battery stats .. this is a myth that's been disproved already ..
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Please do a bit more research before believing things
https://plus.google.com/u/0/105051985738280261832/posts/FV3LVtdVxPT
Holy mother.
Sent from my SAMSUNG-SGH-I727 using XDA
When I started out changing ROMs a few months ago, I used to wipe the battery stats and do the full charge/full drain thing. I've since stopped and can't say that I notice any change in how quickly the initial drain goes back to normal (or even that there is a an "initial" and a "normal").
That all said, if there is, in fact, truth to the idea that the battery drain indicator just needs a while to become accurate on a new ROM, it seems entirely likely that wiping stats and doing a full charge/full drain cycle is really only useful because of the full drain part of it providing the ROM time to calibrate.
I believe it has more to do with the physical battery getting juiced properly when you first get your phone. After that a mod shouldn't need to reflex the battery, but wiping the stats would give you a more accurate percent if it seems off.
Sent from my SAMSUNG-SGH-I727 using XDA
Good lord people. What's with the pointless threads? Please Do some research on the subject before posting nonsense.
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http://www.androidcentral.com/wiping-battery-stats-doesnt-improve-battery-life-says-google-engineer
There's an explanation of what the battery stats actually are. Your 'evidence' is purely anecdotal. That's all.
whosgotlag said:
http://www.androidcentral.com/wiping-battery-stats-doesnt-improve-battery-life-says-google-engineer
There's an explanation of what the battery stats actually are. Your 'evidence' is purely anecdotal. That's all.
Click to expand...
Click to collapse
Ding ding, we have a winner.
That source is tough to refute too.
Im not sure if its my new battery (generic thats SUPPOSED to have more mAh's) but the new 4.04 battery life just SUCKS. Trying it on the OEM battery to see how it compares after wiping th stats.
Everyone needs to stop responding to this thread! It's already been stated that it is all nonsense, so for the love of god people, stop bumping it!
Sent from my SAMSUNG-SGH-I727 using XDA
Well I WOULD have posted in the devlopment thread, but since Im a N00B and all I have to post my problems somewhere...
custommx3 said:
Im not sure if its my new battery (generic thats SUPPOSED to have more mAh's) but the new 4.04 battery life just SUCKS. Trying it on the OEM battery to see how it compares after wiping th stats.
Click to expand...
Click to collapse
generic batteries are garbage
I had the same battery drain on my OEM battery. Flashed back to 2.3.5 and now I have a battery that lasts!

[PROB] Battery always stays at 3mv

I tried every ROM but the battery just stays @3mv
Even tried battery calibration but it was of no avail
Battery discharges in 1hr of moderate usage on Stock ROM and almost every other ROM
Is the battery damaged ?
It has almost finished a year of use
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akiratoriyama said:
I tried every ROM but the battery just stays @3mv
Even tried battery calibration but it was of no avail
Battery discharges in 1hr of moderate usage on Stock ROM and almost every other ROM
Is the battery damaged ?
It has almost finished a year of use
Sent from my GT-I9082 using xda-premium
Click to expand...
Click to collapse
Wipe everything except battery st stats, flash ics, then discharge battery completely, charge it to full without pause, then report back
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Junior Einstein said:
Wipe everything except battery st stats, flash ics, then discharge battery completely, charge it to full without pause, then report back
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Click to expand...
Click to collapse
OK doing the procedure
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Junior Einstein said:
Wipe everything except battery st stats, flash ics, then discharge battery completely, charge it to full without pause, then report back
Sent from my LG-P500 using xda app-developers app
Click to expand...
Click to collapse
An ultra thanks from me
This is the only method which actually worked for me
Phone charged till 100% then it again displayed 80% after an hour it displayed 99% and then after ½ an hour it finally charged to 100%
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akiratoriyama said:
An ultra thanks from me
This is the only method which actually worked for me
Phone charged till 100% then it again displayed 80% after an hour it displayed 99% and then after ½ an hour it finally charged to 100%
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Click to expand...
Click to collapse
Np, you're welcome
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Junior Einstein said:
Wipe everything except battery st stats, flash ics, then discharge battery completely, charge it to full without pause, then report back
Sent from my LG-P500 using xda app-developers app
Click to expand...
Click to collapse
Hi, I'm bumping this one.
I have the same problem. Tried Battery Calibration but 100% shows 4mV and 5 mins later is 64% and 3mV.
Can you explain this solution in deep, please? When you say "wipe everything" you mean getting into Recovery Mode and wiping Dalvik and whatnot? I'm not sure what ICS is either.
Thanks a lot!
leandrox said:
Hi, I'm bumping this one.
I have the same problem. Tried Battery Calibration but 100% shows 4mV and 5 mins later is 64% and 3mV.
Can you explain this solution in deep, please? When you say "wipe everything" you mean getting into Recovery Mode and wiping Dalvik and whatnot? I'm not sure what ICS is either.
Thanks a lot!
Click to expand...
Click to collapse
Well
The stock GB ROM always showed me 3mv/4mv in battery stats
Other ROMs viz. CM7/9/10 always showed me something on 3xxx/4xxx
Also try doing this
Discharge completely
(After phone auto-shutdowns keep switching it on until it refuses to boot)
*** Try only on ROMs with offline charging ***
Then charge it to 100% and use the NOBOL method by zepperlinox (No battery on logo method )
Sent from my GT-I9082 using Tapatalk
Hi,
I'm having the same problem with a (new) battery that I've used for 3 months. Even tho it shows thats charged (sometimes as much as 90%), the phone will randomly turn off. Battery Calibration app reads only 3mv for some reason. With my other battery the phone runs perfectly normal (even tho with a big discharge rate since the battery is like over 3 years old).
To perform this, do i really need to install ICS? I'm currently using GingerBlurB V5 (CM7) and I don't want to backup/restore etc

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