Database Develop

[Q]Battery indicator showing wrong?

The last couple of days I've got a weird problem. When my battery is fully charged everything seems okay and it drains in normal speed (compared to stock).
But when my phone runs out off battery and i start to charge in the beginning everything seems fine.
But suddenly it can go from 75 to 100% in 1 minute.When i look at the stats in MIUI ROM it seems like it's not at same height as it was the last day of 100%. Maybe only 80%.
Sorry for my bad English, but i hope it makes sense.
I've wiped battery stats in CWM. But is it possible that the phone actually is only 80% charged, even though the indicator shows 100% after wipe?
Because if the ROM think the battery is charged and wipe stats it will afterwards only charge to that point and the battery maximum will decrease over days?
If that's possible, how do i full charge the battery? Just leave it in the charger or?
I hope you can understand what I mean.
Thanks in advance

Hello
Does your phone charge to fx 75% and after that doesnt get higher until after you restart the phone?
Sent from my LG-P990 using XDA App

CescMusta said:
Hello
Does your phone charge to fx 75% and after that doesnt get higher until after you restart the phone?
Sent from my LG-P990 using XDA App
Click to expand...
Click to collapse
Yes excactly. But the numbers differs.
Today it charged to 100% though.
Got the same problem?
Sent from my Optimus 2X using XDA App

have you try calibrate your batt again
yes my friend have this problem too, maybe there is software bug

After flashing Celebration HD 2.0.1b I first used Battery Calibration from market to wipe battery stats. Afterwards the battery indicator problems started.
Yesterday i decided to wipe battery stats manually in CWM and drain to phone to 2% before charging, and afterwards I was able to fully charge the phone.
So maybe the bug in is Battery Calibration app?
I decided to install Juice Plotter to monitor the battery and compare it to one build in in MIUI. Just to get some more data.

Hello again
Yes i had the same problem as you, with my previosly 2 lg optimus 2x, and returned them because of the problem you mentioned. I am on the third op2x and luckily this work good
So if i were in your position i would try to go to the dealer and shift the phone with another lg optimus 2x.
Best regards
Sent from my LG-P990 using XDA App

CescMusta said:
So if i were in your position i would try to go to the dealer and shift the phone with another lg optimus 2x.
Click to expand...
Click to collapse
The user said that he started to have problem after a new rom and wiping battery stats, changing phone for that is not the smartest move at all. Is like changing phone because your rom doesn't work.
I have a similar problem, after you wipe battery stats you don't have a reliable indicator, for me the phone took 3 hours to get from 99 to 100%.
I also noticed that my miui ( 1.8.5 same for 1.7.29) doesn't update battery stats when the screen is off so all those plotter don't work, and i think this messes up with the battery indicator (I guess the phone doesn't have enough data to make a decent estimate)
I think is miui + wipe battery stats that can be problematic

I know that but i am just saying that i also had the same problem with the stock rom.
Best regards
Sent from my LG-P990 using XDA App

How old is the battery? How many cycles does it have?
I know from laptop Li-Ion batteries that the voltage vs. capacity is not linear.
When discharging, the voltage will steadily drop to a "wear-level" where it will jump to an almost depleted level. When charging, this "wear-level" will be at the top.
Why I am telling this? Because if this mapping is kept in SW and you wiped it, Android needs to relearn it again. So at 1st complete charging/discharging you would see a % sudden drop/raise, but at the next cycles it would be linear with time (although the total time will be smaller than a new battery).
When laptop/phone battery tips talk about calibration, it is so whoever monitors the voltage (circuit in battery or SW) to know were the wear drop will be, so your estimates to be better.
As an example, I had a very old Thinkpad that did not have any calibration, and it would discharge to about 40% and drop to 5% within seconds. But when charging, it would raise steadily to 70% (from that 5%) but 70% to 95% in seconds. After years of use, that percentage gap would just increase (40-5 got 60-5, 70-5 on discharging).
PS: my current Thinkpad has 4 years and the battery capacity is 49% with 150 cycles. But this one has a nice feature where if the battery was above a certain percentage, plugging AC would not charge it (and thus save a few cycles). I used it set at 70%.
PS: LiIon batteries have cycle count, heat and time as main enemies. Also don't like prolonged (think storage) low charge.

battery on wallcharger screen of error
CenaDK said:
The last couple of days I've got a weird problem. When my battery is fully charged everything seems okay and it drains in normal speed (compared to stock).
But when my phone runs out off battery and i start to charge in the beginning everything seems fine.
But suddenly it can go from 75 to 100% in 1 minute.When i look at the stats in MIUI ROM it seems like it's not at same height as it was the last day of 100%. Maybe only 80%.
Sorry for my bad English, but i hope it makes sense.
I've wiped battery stats in CWM. But is it possible that the phone actually is only 80% charged, even though the indicator shows 100% after wipe?
Because if the ROM think the battery is charged and wipe stats it will afterwards only charge to that point and the battery maximum will decrease over days?
If that's possible, how do i full charge the battery? Just leave it in the charger or?
I hope you can understand what I mean.
Thanks in advance
Click to expand...
Click to collapse
I have when i turn off my fhone and i charge it it shows a battery icon whit an error in it ics lgp990 please help i dont no what tho do

problem with battery please help

Hey guys
I have problem with battery
Now my battery 40% when left note sleep up to 3h i back i see battery 41%
I saw it with custom roms and stock i tried all kernels
And problems sometimes appear and sometimes no i tried wipe battery and
No diffrent
I want to destroy this problem for ever
Thanks alot.

No One Know How i can fix it ?

I don't think it's a bug.
I'm pretty sure it's just the way it estimates your battery percentage.
Here's how I think it works.
If you've been using your phone for, say, 3 hours straight, your phone calculates your drain rate like batt%/min or something.
And judging by how long you've used it for, it will estimate the approximate percentage of battery remaining.
When it's on deep sleep for a while, not only is the clock rate different (probably <200mHz at deep sleep), but the drain rate will change too.
The phone will re-estimate the battery percentage according to that new rate, hence the different (often higher) battery percentage, after a period of inactivity.
I could be completely wrong, but that's how I see it.

Thanks for ur Idea Brother

Any one have other Idea ?

I didnt get your problem....
Is your battery draining fast???you mean to say this???
Sent from my GT-N7000 using xda app-developers app

shivg86 said:
I didnt get your problem....
Is your battery draining fast???you mean to say this???
Sent from my GT-N7000 using xda app-developers app
Click to expand...
Click to collapse
Hmmm i mean My Battery sometimes up 1% with itself

Charge your battery overnight n Wipe your battery stats in recovery.
Sent from my GT-N7000 using xda premium

little-vince said:
I don't think it's a bug.
I'm pretty sure it's just the way it estimates your battery percentage.
Here's how I think it works.
If you've been using your phone for, say, 3 hours straight, your phone calculates your drain rate like batt%/min or something.
And judging by how long you've used it for, it will estimate the approximate percentage of battery remaining.
When it's on deep sleep for a while, not only is the clock rate different (probably <200mHz at deep sleep), but the drain rate will change too.
The phone will re-estimate the battery percentage according to that new rate, hence the different (often higher) battery percentage, after a period of inactivity.
I could be completely wrong, but that's how I see it.
Click to expand...
Click to collapse
This might right ... I event experienced ..battery almost empty ..after restart the phone ..1 bar become 2 bars on battery indication ..

Portgas-D-Asce said:
Hmmm i mean My Battery sometimes up 1% with itself
Click to expand...
Click to collapse
If Battery drain is your problem, try this-
Discharge your battery till it switch off automatically
Now connect your charger in switch off mode and charge it till the full.
Now after recharging it fully, unplug your charger from the socket.
Go to recovery mode and go to advance,wipe battery stats and restart your device.
HIT THANKS BUTTON,AS IT IS MANDATORY.

shivg86 said:
If Battery drain is your problem, try this-
Discharge your battery till it switch off automatically
Now connect your charger in switch off mode and charge it till the full.
Now after recharging it fully, unplug your charger from the socket.
Go to recovery mode and go to advance,wipe battery stats and restart your device.
HIT THANKS BUTTON,AS IT IS MANDATORY.
Click to expand...
Click to collapse
Brother my Battery Not Drain its Incrase 1% with itself on deep sleep

[Q] weird charging reading !!

Recently a friend gave me his i9000 to check why his device always shut off suddenly. It runs stock GB . The problem is, the battery is charged but without showing any warning or low battery message , the device just turns off . So i exchange battery from another i9000 and saw, the phone works fine !! And the battery i got from the faulty i9000 and put into another one, bingo....that phone too wont turn on. So the problem is , that although, the phone works just fine, and battery will actually charge, it always shows the battery is charged 100 % !!! Always !!! I have installed CWM, tried at least three different kernels, and roms. Same result.
Does anybody can tell me , why this bizarre reading and why the phone and also every other battery widget show the it is charged 100 % while actually the battery is less than 10 % charged !!!

The battery is 90% at fault.
You should buy a new one

Nitro_123 said:
The battery is 90% at fault.
You should buy a new one
Click to expand...
Click to collapse
sorry mate, i might have confused you with the question. The battery is good, i tested on other galaxy S and that other phone, read battery charge level accurately . But the problematic phone, always shows 100% charge for every battery !!! So after a day or two, the phone should show low battery , but instead it just turns off, even than it would show battery is full !!!

sakibchy said:
sorry mate, i might have confused you with the question. The battery is good, i tested on other galaxy S and that other phone, read battery charge level accurately . But the problematic phone, always shows 100% charge for every battery !!! So after a day or two, the phone should show low battery , but instead it just turns off, even than it would show battery is full !!!
Click to expand...
Click to collapse
Clear the battery stats in recovery..
Sent from my GT-I9001 using xda premium

jabrif said:
Clear the battery stats in recovery..
Sent from my GT-I9001 using xda premium
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Click to collapse
Jabrif AFAIK I don't think it does anything :/
To OP then mate the phone hardware may be at fault. I'm not sure though as i've never heard of this before
Good luck

[Q]my Xperia ZR taking long time for charging?

My xperia zr is taking much time to charge 2hr.45min (approx 3hr) to charge from 0%-90% . and does not go above 90% i connected my phone for 30min above 90% it was 91% only i switch of my phone and again i tried to charge bt it dont worked. i searched on google gone through many threads none of them helped me. many threads says go for stock charger im already on stock charger . earlier it was taking 2 hr to charge from 0-100% nw it doesnt. i checked every setting switched my phone to airplane mode it also dont worked for me and my battery is draining much faster than it was at earlier.
any body can tell me how to use android phone so that i can higher my battery life ??
or is there any harm with my battery?

Mine 3 hrs to get fully charged.. Can last 17 hrs with total 3.5 hrs on screen. Auto sync is off and location access is off. You can see on battery state which one use high battery usage.

niraj5.chaudhari said:
My xperia zr is taking much time to charge 2hr.45min (approx 3hr) to charge from 0%-90% . and does not go above 90% i connected my phone for 30min above 90% it was 91% only i switch of my phone and again i tried to charge bt it dont worked. i searched on google gone through many threads none of them helped me. many threads says go for stock charger im already on stock charger . earlier it was taking 2 hr to charge from 0-100% nw it doesnt. i checked every setting switched my phone to airplane mode it also dont worked for me and my battery is draining much faster than it was at earlier.
any body can tell me how to use android phone so that i can higher my battery life ??
or is there any harm with my battery?
Click to expand...
Click to collapse
try better battery stats app from google play store. it will give u battery performance.
I think the battery may have lost its capacity to full charge.

Maybe your priblem is on your baterry, lets try new baterry cmiiw

sourabhp said:
try better battery stats app from google play store. it will give u battery performance.
I think the battery may have lost its capacity to full charge.
Click to expand...
Click to collapse
i downloaded the better battery stats app ....nw my battery is working fine.....i just googled " How to make battery backup better" so nw im following that instructions...............i don't know which method helped me but my battery backup is fine now
i am listing how to use battery for android phone this are the results which i have got when i googled how to make battery backup better ,hope it will help others:
1)Charge ur battery in week 0-100% twice
2)plug ur phone for charging when the battery is between 30-40%
3)when ever u play game the phone gets hot so let it cool first keep it aside for 15-20 min then plug it for charging
4)switch off background data transfer in setting data usage or u can download an app for it.

niraj5.chaudhari said:
i downloaded the better battery stats app ....nw my battery is working fine.....i just googled " How to make battery backup better" so nw im following that instructions...............i don't know which method helped me but my battery backup is fine now
i am listing how to use battery for android phone this are the results which i have got when i googled how to make battery backup better ,hope it will help others:
1)Charge ur battery in week 0-100% twice
2)plug ur phone for charging when the battery is between 30-40%
3)when ever u play game the phone gets hot so let it cool first keep it aside for 15-20 min then plug it for charging
4)switch off background data transfer in setting data usage or u can download an app for it.
Click to expand...
Click to collapse
charging cycle is important for any battery. laptop or mobiles

Battery life

Hello guys i have bought a note 8 from 7 days and i have Seen that battery percentual decrease quickly. In the morning after some minutes with only display unlock i loose 5%.
Is this normal?
Thank you

Dude dont charge your phone to 100% over and over all the night. You cant remplace easily the battery. Dont worry about your battery drain, I thinks is ok. Normally we got 6-7 hours of screen on time, so if you only lose 5% in 30 min... it mean you can get around 10 hours!

anon_durden said:
Dude dont charge your phone to 100% over and over all the night. You cant remplace easily the battery. Dont worry about your battery drain, I thinks is ok. Normally we got 6-7 hours of screen on time, so if you only lose 5% in 30 min... it mean you can get around 10 hours!
Click to expand...
Click to collapse
I charge my phone on a wireless charger base overnight and it stops charging when at 100% and no problems! Anyway, if you read the latest thoughts on charging, keeping the battery over 60% is best and no damage will be done by over night charging!
Sent from my SM-N9500 using Tapatalk

robmeik said:
I charge my phone on a wireless charger base overnight and it stops charging when at 100% and no problems! Anyway, if you read the latest thoughts on charging, keeping the battery over 60% is best and no damage will be done by over night charging!
Sent from my SM-N9500 using Tapatalk
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Click to collapse
The best for a litium battery is stay in 40-60 percent. Charging more than 80% will also damage your battery life (but sooo much less than let it drain to 0%). Charging over night isnt good for a battery (at least I think it). Check AccuBattery, is a very nice app to battery management. And when you hit the 100% it stops, but will run again because you wont get a 99% while the phone are in the pad. Hope I help you ^^

Do you monitor your data? You could have some apps working in the background and using both your data and battery. Install a data monitor app to check which apps use your data.

I get 1.5 to 2.5 % drain per hour in idle, gps wifi and data off, aod on, sometimes even 0.9% per hour overnight