Database Users

[Q] Battery Meter on Mango Inaccurate?

So i recently flashed CleanDFT ROM, first couple of days the meter read out 1 day and 18 hours which im very surprised then it went down to 1 day and 4 hours, now this morning i unplugged and it tells me i got 19 hours left from full charge, should i go by this? or is there something wrong?

hello can you help me wid flashing...i came from android...no idea of how to do it...

cyril008 said:
hello can you help me wid flashing...i came from android...no idea of how to do it...
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Redirecting you to the right place.

If you have just flashed a new rom, in general, you need to go through a couple of battery cycles before the battery read can be accurate. I remember when flashing my ATT FUze I had to wait 2-3 complete charging cycles ie. discharging battery to 10% and charging back to full before I could get accurate reading. If you are experiencing worse battery time than before flashing after 2-3 cycles you might need to reflash the rom; you should see better battery time with custom roms, so I have heard.
I also wouldn't go by the battery saver timing, I would go by wpbench or real time use to get an accurate reading on battery time. I have a 1800 mah battery in my focus and it reads 24 hours on battery life

As far as i know, doesnt all the ROMs have basically the same battery life?
Ill be going out of town sometime this week and ill be out most of the day, i need a rom thatll at least last a whole 12 to 14 hours at the most or whole day at best of just occasional twittering and occasional checks on facebook and probably capture some pictures and a video and maybe an hour at most on music? im sure this phone can handle it but idk what you guys suggest

I have the same issue with ATT samsung focus with Roger latest updates, the battery meter is just not accurate, sometimes full and just reboot upon eject from the micro usb. The battery was fine until recently. Found a few other with the same issue online, no solution available yet.
*pulling out battery doesn't work*

The solution is exactly the same as it is on a laptop.
Lithium ion batteries, and, actually, come to think of it, pretty all rechargeable batteries lose capacity over time. The phone, to begin with, doesn't have a good idea of how much capacity is left, and it has to estimate based on previous performance. This is partially a result of battery manufacturers going as cheap as possible with the circuitry in lithium ion batteries.
The phone needs to figure out how old your battery is. This data is definitely lost with a new rom. Leave it to charge overnight, then unplug it and let the battery run all the way to dead. Charge it again, and your battery percentages should be correct. It may take more than one cycle, but the meter should settle into a correct estimate eventually.

Incorrect battery stats are a possible reason for fluctuations in battery life and reseting them as described in the previous post can help.
Another thing which you can do is use an app like this http://forum.xda-developers.com/showthread.php?t=1328730 to check the reported mV rating of your battery at full charge. That can serve as an indicator of the battery life you can expect with your current battery stats.

Anker Battery stops charging at 50%

I have an i9505 running resurrection remix 5.5.6 with alucard kernel. all was going ok-ish until I used the battery calibration app to delete the batterystats.bin file. since then the battery will only charge up until the high forties or low fifties in percentage terms. the battery was fully charged when I calibrated it, it's really getting on my nerves now.
could it be a kernel thing ? I have fast charge enabled in alucard...
any help would be appreciated !!!

1. Do not use battery calibrating apps. They are useless. They are for old phones and are useless now.
2. Deleting batterystats is useless. Do not do this anymore. Android can take care of it.
3. You can try a diffent ROM/kernel. Maybe that wil fix it.
For the future let Android handle you battery. It's perfectly capable of doing that.

Even on older phones battery calibration apps were useless, because Android always deleted the batterystats.bin file when the battery was charged to 100%.
OP, contact Anker and see if they have an app to reset the battery percentage. Some companies, like Mugen Batteries, offered such an app because the device itself couldn't recognize when the battery was at 100%.

I manged to get it fully charged today and I'm wondering if it's related to alucard kernel as this only seemed to happen when I was running the first two cores at different values from the last two.
be interested to hear if anyone else gets the same thing if they recreate settings like that...
still, I'll look into that anker app angle. I also have a zero lemon battery that doesn't seem to give it's proper capacity. personally I think Samsung Androids are quite poor with batteries in general, like your percentage going up after you've put the phone down and stopped using it, or the last 2 % lasting longer than the previous 20 (on extended batteries at least)...

My battery life is bad

I will try install many roms and in all the battery life is bad.
CloudyG2 3.3 and 2.2 and more...
What can I do? I have LG G2 two years.

Change battery, I also have that problem , and only fix is replacing battery..
Sorry on bad english

Another help? I dont want replace my battery.

saarxee said:
Another help? I dont want replace my battery.
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Remove all apps you don't need. Install wakelock detector to see what is consuming battery on your device Then disable them using greenify or servicely . You can also run this script http://forum.xda-developers.com/lg-g2/general/guide-reducing-google-play-services-t3139032 .
Remove extra bloatware , avoid using wifi , reduce screen brightness .. or go back to kitkat.
I would rather suggest to change your battery dude, 2 years for a mobile battery is more than enough.

Only apps was installed on my device is WhatsApp, facebook, Instagram and Greenify.
Yesterday I downgrade to KitKat and the battery very bad (Cloudy 2.2)

Same problem here : http://forum.xda-developers.com/lg-g2/help/lg-g2-d802-battery-draining-5-0-2-t3256313/

I also got bad battery life with all LG lollipop rom and stock kitkat , but I get terrific battery life with cloudy g2 2.2. Like 6.5 hours of SOT. Just make sure you clean flash and reduce background app by clearing recent apps.

Are there any apps that show the battery Wear level
Sent from my SM-N920C using Tapatalk

Mr.201 said:
I also got bad battery life with all LG lollipop rom and stock kitkat , but I get terrific battery life with cloudy g2 2.2. Like 6.5 hours of SOT. Just make sure you clean flash and reduce background app by clearing recent apps.
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6.5 hours?!?! Are you sure?
1.5 to 2 hours of SOT is the most I can get out of my two-week-old G2.
I bought is from a "mobile shop" on aliexpress.
Yes, it is refurbished... ,it looked like brand new on the outside.
... however, when I disconnect it from the charger in the morning (7 am) a few hours, and a few phone calls later it is already at 85%
at noon there is 65% left.
at the evening - somewhere around 22h - the battery usually dies completely ...
14-15 hours of usage on battery... NO games, NO Youtube videos.
Max 30 minutes browsing the news (on WiFi)... and an hour of phone calls (city center, so no problem with reception...)
When the screen is on (btw. I set it to 70% brightness) I can literally see the battery percentage indicator decrease every few minutes...
Looks like I got a phone with bad battery... didn't I?
I'm on KitKat (4.4.2 stock) D802 version...

I had this problem on my freedompop(sprint) "refurbished" phone. Even though it looked like new on the outside, I would only get 2-3hrs sot. After replacing the battery I now get more than double that. Factory reset, disable/uninstall the apps you don't need, and only install the apps you do need. If you still get bad battery life then the only option is a new battery.
Btw, a custom rom will NOT give you significantly better sot unless it severely cuts performance and lcd brightness.

13x025 said:
6.5 hours?!?! Are you sure?
1.5 to 2 hours of SOT is the most I can get out of my two-week-old G2.
I bought is from a "mobile shop" on aliexpress.
Yes, it is refurbished... ,it looked like brand new on the outside.
... however, when I disconnect it from the charger in the morning (7 am) a few hours, and a few phone calls later it is already at 85%
at noon there is 65% left.
at the evening - somewhere around 22h - the battery usually dies completely ...
14-15 hours of usage on battery... NO games, NO Youtube videos.
Max 30 minutes browsing the news (on WiFi)... and an hour of phone calls (city center, so no problem with reception...)
When the screen is on (btw. I set it to 70% brightness) I can literally see the battery percentage indicator decrease every few minutes...
Looks like I got a phone with bad battery... didn't I?
I'm on KitKat (4.4.2 stock) D802 version...
Click to expand...
Click to collapse
Well if you are using kitkat then i must say you got a faulty or old old battery . G2 on kitkat is/was a beast , I can recall those days when i used to get 7+ hrs sot on kitkat . you should call or email to your seller and tell them the problem you are facing.

After sorting through potential power draining apps etc.. You could try a battery calibrator of some sort. I used one and a big difference noticed, however after it's fully charged in the morning I take it off the charger and leave it sit there for at least 30 mins without touching it and battery life is even better.

Thank you all for your answers.
In the mean time I installed this Battery Monitor Widget.... and it gives me some "interesting" readings:
1. my phone charges ridiculously fast. From 37% to 100% in 70-80 minutes... Connected to the charger at 00:04. At 01:14 it was already at 99% (This widget gathers info every 10 minutes)
https://goo.gl/photos/DDerdsk2mSdKipMt7
...and it charges with an insane amount of current (over 2100 mA)
https://goo.gl/photos/VJd7iUFMm5A4s3UeA
2. there are some kind of "spikes" in battery usage, but after a few minutes the battery seems to recover...
this is the battery voltage statistics:
https://goo.gl/photos/Uh96utz1aBJNV3qCA
So, It is more and more evident, I got a faulty battery...
Now, only if I could know where to buy a GENUINE LG battery...
Aliexpress is full of "shops" claiming they are selling "original" LG batteries, however there are quite a few negative reviews about them... (batteries are lighter, thinner, deteriorating fast... etc.)

Poor batter life

I changed from Note 3 to s 6 edge plus recently
The battery drops 5% per hour overnight when not in use. If I go to bed with less than 40% battery at night I am sure to wake up with my phone switched off in the morning.
When in use with screen on, the battery drips one percent every two minutes. This is the worst battery life I have ever seen in a phone. I was a long loyal customer of samsung and this is my last samsung phone ever.
Extremely disappointed

Please post your battery stats ? so we can have a better understanding of your problem. I suggest you install 'Doze' which should stop unnecessary apps from connecting to the internet and causing your phone to awake from deep sleep.

Dear Akbar 11
Heres the battery stats....is it normal?

I had the same issue, and as far as I managed to find out, it is a bug in Samsung's kernel. Flashing Arter97 kernel solved the issue for, but do post battery stats from SmartManager. If it says 'Android' or 'Android OS', then you have the same problem many of us do.

I don't think it's a kernel problem. My android OS is very low 4%. Like zoolok said post your battery stats from settings, battery, battery usage

I have the same problem. Battery was great before I flash custom rom. After going back to stock I have big battery draining. I must stay on custom rom. With Audax rom and Skyhigh kernel i have great battery life.

You have either messed up something big or you have an app in the background that is eating up your battery like no tomorrow.
And the reason i say that is because i recently got this battery life on my Galaxy S6 edge+.
And this was taken 2 days ago.
Here i use the CRISSCROSS ROM, AudaxPro Kernel, Greeinify and Samsung's own 'Appoptimizing' feature (same as Doze in Android 6.0).
So my battery life is pretty awesome.

i have problem whit battery lose 25% when i sleep

This is a usual day with s6 edge plus

Any help?

jonynoname said:
Any help?
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http://forum.xda-developers.com/showthread.php?t=1179809

i have this problem battery ... if u fixed it tell me how?

Well I was expecting Google Play Services to be eating your battery (which is quite common) but it looks like your Andriod OS is eating the most battery. I would uninstall Facebook and use the web version it always helps with the ram and battery furthermore, turn off location if you are not using it and check accounts which are being synced. These are the only tips I can give you as I have never seen Android OS drain so much battery.

Since a few days Google Play Store is eating up my battery: I go to sleep with 100% batt and wake up with 50%, if I check batt stats on top I have play store at 45%, with 5h active a d 2h of CPU.
Follows Android system at 5%.
Going crazy why...

jonynoname said:
This is a usual day with s6 edge plus
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You've charged your phone 4 times during that day. I can't see what's the interesting part here.

battery percentage is inaccurate -help- [SOLVED]

hello friends ,i got a new battery (it seems original) and installed it but i have weird problems with the percentage that the phone shows .
-the battery lasts for 9h sot even with some benchmarks on latest pie ob ,so its definitely not bad
-the problem is that when it gets to 10% then it goes 9 8 7.. till 0% in about 5 minutes and then shuts off with a dead battery screen .
-i noticed that the phone still charges when it reaches 100% charges at 1 amp and gets to 0 amps after 20 minutes ,i also noticed that the idle/screen off drain is very very low ,it probably has to do something with the battery calibration
i tried:
going full stock with stock recovery but the issue persists,
doing some all night power off charges to 100%
searched most of the threads everywhere ,but no one has an exact answer .
is there any way i can access the discharging algorithm so i can tweak it ,or if is a way to teach it be more precise?
thanks so much for everyone willing to help ,sory for the long post ,i wanted to be as precise as possible i can provide everything you ask for to fix it .
p.s. i study electrical engineering so be free to use scientific terms.

steve-fox said:
hello friends ,i got a new battery (it seems original) and installed it but i have weird problems with the percentage that the phone shows .
-the battery lasts for 9h sot even with some benchmarks on latest pie ob ,so its definitely not bad
-the problem is that when it gets to 10% then it goes 9 8 7.. till 0% in about 5 minutes and then shuts off with a dead battery screen .
-i noticed that the phone still charges when it reaches 100% charges at 1 amp and gets to 0 amps after 20 minutes ,i also noticed that the idle/screen off drain is very very low ,it probably has to do something with the battery calibration
i tried:
going full stock with stock recovery but the issue persists,
doing some all night power off charges to 100%
searched most of the threads everywhere ,but no one has an exact answer .
is there any way i can access the discharging algorithm so i can tweak it ,or if is a way to teach it be more precise?
thanks so much for everyone willing to help ,sory for the long post ,i wanted to be as precise as possible i can provide everything you ask for to fix it .
p.s. i study electrical engineering so be free to use scientific terms.
Click to expand...
Click to collapse
Not a solution, but just keep the battery level above 10%
9h sot is very good with a battery you don't know if it's original or not

strongst said:
Not a solution, but just keep the battery level above 10%
9h sot is very good with a battery you don't know if it's original or not
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it was 9 sot hours with 3 hours of geekbench battery test (about 14%/hour lost) without any tweaks at all , completely stock ... that's the reason i am trying to fix this issue,the performance is insane ..(every calibration app shows at least 99% health,it even recharges way faster that the old one ,3.8A 10 to 100 in 45 minutes) if it wasn't that i would swap it back with the stock ..

steve-fox said:
it was 9 sot hours with 3 hours of geekbench battery test (about 14%/hour lost) without any tweaks at all , completely stock ... that's the reason i am trying to fix this issue,the performance is insane ..(every calibration app shows at least 99% health,it even recharges way faster that the old one ,3.8A 10 to 100 in 45 minutes) if it wasn't that i would swap it back with the stock ..
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Click to collapse
Technically you want to avoid the battery dropping below 20% anyway (If you believe the words from Samsung) so it shouldn't really be an issue.
One thing you can try though is to install L Speed from the play store (require root) and use the battery calibration tool to see if that helps. Outside of this I cant really think of any thing else other than to just deal with it as is.

i figured it out guys...the thermistor in the battery was dead , i though a solution for anyone face the same problem ,desolder the control board from the original battery then solder it to the new one ,the cells are healthier so the battery will be good as new ?