Develop Bugs

[Q] Battery drain application

Hi!
I'm looking for an application, that quickly kills my battery if it's low, so I can do a full charge to improve battery life.
Something, that I launch, I put my phone on the desk, have a tea meanwhile, and it's drained! Something, that turns on wifi, do some downloading, browsing, video playing, or whatever, and does it automatically without supervision. Does such app exists?

I'll second this, it'd be nice to have an app do this for me and maybe even give us some interesting stats from it?
Sent from my mind using telepathy

why would you want an application to destroy your battery?

Adevem said:
why would you want an application to destroy your battery?
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Apparently if you do a full discharge the battery life will be longer.

Soniboy84 said:
Apparently if you do a full discharge the battery life will be longer.
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not really, you should avoid deep discharges...

Byr0x said:
not really, you should avoid deep discharges...
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+1 If you had been reading around...you would know Lithium Ion batteries are designed to 'maximize' their efficiency within about two weeks of 'top up' charging. Cycle-charging is generally considered a less efficient method of charging. You will need to 'TopUp charge' this means charging as much and as often as possible. If your battery is at 89% for instance and you find yourself near a socket, plug your adapter in and charge it up to 100%. After a few days of doing this you will notice an improvement in the life of your battery when you are not able to charge.

Actually,,,
It is not matter of running your battery down to 0%.
It is ok to run it down till phone does to power on itself.
As you know battery is a single cell Li-Ion @ 3.7v
when it is fully charged it's peak voltage is 4.2v
By the time battery mah is drained down (galaxy s has 1500mah)
battery voltage should be around 3.2~3.4v range. this will depend on condition of the battery.
Battery should never go below 3.2v personally, 3.4v is my cut off.
If your battery voltage goes below 3.2v... it's time for a new battery as this kind of voltage will damage your battery, either it will leak or puff (battery will actually get bloated.
Phone has a voltage cut off so it will not over charge over 4.2v but if it does, it will likely start to smoke and catch fire.
I am sure anyone who is into electric Radio control knows all about these batteries.
Oh btw,,, long time storage voltage should be 3.8v
You'll be asking how do I know what voltage my battery is... I personallly don't know of any apps but GPS Status actually shows the temperature & voltage of your battery.

Soniboy84 said:
I'm looking for an application, that quickly kills my battery if it's low, so I can do a full charge to improve battery life.
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Click to collapse
First, take into consideration the comments above regarding deep discharge of your battery...but, to answer your question, there's an app in the market place called 'Battery Refresh' which attempts to drain your battery quicker.

Well if it's all true above than its a good sign, and thanks for the info! I'm not an expert but in the old times I remember batteries had to discharged completely, maybe even if it's just a few times. Now somebody can also tell me why my battery is discharging when it's plugged in the socket with original charger? All I do is using the internet, and has. nimbuzz and a live wallpaper on. :S

You could probably enable the GPS/BT/WIFI ( connected to a router ) and run the interactive mode on Neocore benchmark.. that should enable most of the hardware components on the phone and stress the GPU/CPU.. probably would see a 25% battery drain for every 35-40mins.

I don't know what has changed with the batteries but as far as I know...
it is good to discharge new batteries 3~4 times down until phone does not power on.
Like I have said... it's about the voltage of the battery, not whether battery has any juice left in it or not.
These batteries have a protective circuitry so that it will not charge over 4.2v,
also as for discharge it is usually down to 3v but usually with a charger/discharger units that can control mah/volts/amps. With typical usage from the phone, it'll likely be discharged down to about 3.2`3.4v. Which is very safe.
You can do whatever you feel but I personally do this to every batteries I have for phone and every batteries I use with my radio controled cars.
For my RC cars, I have about 6 batteries ranging from 1cell to 3cell LiPo packs.
Each cell is 3.7volts.
But you don't have to force discharge and hurry the process.
Just use the phone normally and let it run down to nothing... than recharge to full peak.
Than again, choice is yours.

I'm looking for the same kind of applications. It's very useful for recalibrating your battery. Wipe the battery history then do a full cycle.
Sent from my GT-I9000 using XDA App

The old saying in RC Helicopters was that the difference between discharging 50% and 100% was the difference between getting 500 uses and 5 uses.
You should certainly avoid ever fully dischaging any lithium based battery.
Older nickel batteries (Ni-cd, Ni-MH) required full dischage cycles to get rid of memory the the metals pertained, lithium-ion and lithium-ion-polymer not only do not require this; but doing so will damage them.
And yes, the older ipods came with Nimh cells and they did reccomended full discharge cycles.
Im pretty sure the idea was to try not to let the voltage get below 3.5v/cell and never below 3.3. Dead flat is 3 or 2.85 which is when the battery simply cant produce any real current. The phone should have circuitry though to not let the voltage get above 4.25 or below ~3.5.. If the low battery warning comes on, set the brightness to dim, and stop any activities (unless its a phone call, its not THAT important but if youre playing games or watching a movie...) until yo can get to a charger.
By the way this being my first post (i meant to ages ago) Ill just mention that my galaxy S came with recovery mode and download mode Enabled, i got it just last month, Virgin network, Australia.

draining the battery fully was for the older battery types, new age batteries are not recommended to be drained fully

Thanks!
One more question:
I'm using my phone as a desktop replacement, because I don't have Internet at the moment. I'm using xda, dolphin browser and listening music. It's plugged into the mains and it's not charging. It says 49%, and stuck there. Is it possible I'm using too much battery?
Sent from my GT-I9000 using XDA App

Ok, this will be my last reply.
Fully draining or not is not the issue.
In RC, most modern electronic speed controllers have a built-in battery cut-off which will cut off power once it reaches certain voltage. Because OVER-draining battery without cut off can damage/kill/ or make it unable to hold voltage.
Also, once the battery voltage reach certain point (still within safe range) you will notice the motor being powered slow down. This would also be a recommended time to stop.
Cellular phones have built in safe cut off aswell. As I have said I have measured my battery after being full drained, voltage was around 3.55v or so. Which is very normal considering voltage of the battery is 3.7v only with peak charged voltage of 4.2.
Now, Someone mentioned that fully draining your battery repeatedly will dramatically reduce battery life.
Reducing life of the battery has more to do with the amount of AMP used to charge the battery. Faster charging is usually reduce battery life dramatically.
And without hobby grade chargers, you won't be able to control this charge rate.
Slow charge is better but charging at 1C rating is the normal. But charging at 1C means regardless of batteries mah rating, battery can be charged in about 60 minutes. As we all know, our phone batteries doesn't charge from zero to full in 60minutes, right? just like most of the portable devices it takes nearly 3~4hours to fully recharge. Last 20% usually takes longer because Amp provided to charge slowly lowers. That is why.
For example, if Galaxy S battery is 1500mah, than 1C charge rate is @ 1.5amp.
If battery is 3000Mah, 1C is 3.0Amps and so on.
So like I have said over and over before, drain your battery away if you have to by choice or not. Just use it up, I will bet you your battery will last longer than you keep your phone.

U should avoid draining ur battery to 0% (witch is not possible with ur phone. When it shows 0% the charge of the battery is at 10-15%). Li-ion batteries dont have a memory effect, so it would be usless discharching it completely anyhow. Best for sgs battery is charging it before it goes under 50% that will improve the lifetime of ur battery (not how long it lasts before u have to charge but how long it lasts before u have to go and buy a new one)
How do i know? Simply cause i had to learn that a few weeks ago for the job im learning.
@xxgg: yes ur right, it wont really damage the battery if u runn it till thr phone shows its empty. But using an app to drain battery as quick as possible will, since the app forces the battery to give out more Ampere than its built to give out
Sent from my GT-I9000 using Tapatalk

[Q] Phone uses 2% battery every 15 minutes

My phone seems to be using 2% battery every 15 minutes on standby, worse when its on.
When I check what is running, it says Android OS 50%...... what can I do? I usually charge my phone three times a day.
Sent from my Galaxy Nexus using xda premium

I use a variety of apps to check what is going on with my phone.
Watchdog - monitors apps for excessive cpu usage
Cpu spy - see how long your phone stays at each frequency, but more importantly in deep sleep.
Battery monitor widget - monitors battery usage
System tuner pro - get detailed analysis of a recorded system usage.
Also, when in battery usage, I click android os to see how long it has kept your phone awake. Have you made any changes to your phone? Installed a custom ROM?
Sent from my Galaxy Nexus using xda premium

Also...give it a few days of charge-ups. It really does make a difference.
FWIW, with moderate use, my Droid Charge 4G does about 10-15% every hour. So I don't even think 8%/hr is that bad... :/

no changes to the phone, its all stock. Any benefits moving to a custom ROM on the nexus?
I've had the phone for two weeks, battery has deteriorated. Now charge it three times a day.
Sent from my Galaxy Nexus using xda premium

Crazy CS said:
no changes to the phone, its all stock. Any benefits moving to a custom ROM on the nexus?
I've had the phone for two weeks, battery has deteriorated. Now charge it three times a day.
Sent from my Galaxy Nexus using xda premium
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You probably never calibrated it properly to begin with. Charge to 100% > unplug > wipe batterystats.bin > let the battery drain completely until the phone powers off. Then charge it continuously over night and in the morning unplug and let the phone drain completely until it powers off.
I am a pretty heavy user as I text literally every 2 minutes all day (girlfriend ) and I manage to get 20-25 hours easily.
I also drain my battery out completely every day for good measure
Charging in between screws up your calibration, try not to charge unless you are below 15%. And do not disconnect it until it is fully charged (98-100%).
Note: I've also noticed wifi saves you a lot more battery juice than being on 3G/4G, so keep your wifi active if you are in range

KiNG OMaR said:
I also drain my battery out completely every day for good measure
Charging in between screws up your calibration, try not to charge unless you are below 15%. And do not disconnect it until it is fully charged (98-100%).
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This is just not accurate for Lithium Ion batteries, which have no cell memory and gain more from frequent shallow charges than deep charges.

krohnjw said:
This is just not accurate for Lithium Ion batteries, which have no cell memory and gain more from frequent shallow charges than deep charges.
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Not to mention draining a Li-ion past 5% can shorten the life of the battery.
Further Li-ion's have a lifespan measured in cycles. You get about 500 cycles on a typical Li-ion. A cycle is a drain and charge. If you use 50% of the charge and then recharge to 100% you only use half a cycle. By needlessly draining the battery you are using up limited cycles reducing the life span of the battery.
While I'm sure android's calibration needs to know the upper and lower boundaries of a charge I'm certain it would be smart enough to handle charges when the battery isn't completely drained. Most battery calibrations work this way. Every once in a while you need to charge to 100% drain to 5% and recharge without using to 100%

Wheres battery stats.bin located?
Sent from my Galaxy Nexus using xda premium

Crazy CS said:
Wheres battery stats.bin located?
Sent from my Galaxy Nexus using xda premium
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Clockwork Recovery -> Advanced.
.. file is in /data/system i believe

its probably a bad app working with ICS.
Use watchdog and it will tell you.
Check your widgets that they aren't constantly refreshing.

Battery charge from 80% to 100%=(

Hi, sry for my english=(
When i charge my battery its normally charge to 80% and then becomes 100%.
Try calibrate battery but this doesnt help. Also try another roms and kernels.
Is it a battery issue?

U can buy new battery from DEALEXTREME.com

so its the only way?

Try this.
Charge battery to full. Leave plugged in, Turn off fastboot in power settings and shut phone off. Light will turn orange again and let it charge til green. Boot into recovery and wipe battery stats. After this let the battery drain as low as 10% before recharging to full without unplugging. Do this a few times over a few days. If you don't get more accurate percentages after this then the battery could be messed up.

Gizmoe said:
Try this.
Charge battery to full. Leave plugged in, Turn off fastboot in power settings and shut phone off. Light will turn orange again and let it charge til green. Boot into recovery and wipe battery stats. After this let the battery drain as low as 10% before recharging to full without unplugging. Do this a few times over a few days. If you don't get more accurate percentages after this then the battery could be messed up.
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Click to collapse
thx i will try.

i have the exact same issue. i have done battery stat wipe..flashed multiple roms over and over with full wipe and all that. battery charges up to 80% then the LED turns green..and stays that way till it reaches 100%. it jumps from 80% to 100% in just a few minutes.

battery jump
I wouldn't worry Lendlord mine does the same (see attached pic) you can see the green line jumps up from 80 to 100 but doesn't jump down from 100 to 80 under use. The picture is taken from Battery monitor widget, it's a great app which shows mv, ma, % and temp and even keeps a text log of what ma drain there has been allowing you to monitor battery drain while you're using your phone or while it is sleeping.
Here's a great guide aswell of how to ensure best battery life by memnoc:
forum.xda-developers.com/showthread.php?t=1226016

so thats mean that some battaries have the same issue=( And there is no solution for it...
HTC failed again...
first GPS and now the battery. Bad, very bad!
And one more request.
Can someone post your current widget log?

LendLord said:
so thats mean that some battaries have the same issue=( And there is no solution for it...
HTC failed again...
first GPS and now the battery. Bad, very bad!
And one more request.
Can someone post your current widget log?
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Click to collapse
I have the same thing happen to mine, i think its because you've let your DHD die due to low battery levels and that damages the battery which i think causes this problem

..letting the phone shut off because of a completely discharged battery is NOT good for the lifetime of Li-ION batteries.
The battery could be hurt and the amount of mAh the battery is able to store might be lower after.
Also trying to 'pump' the battery to fully charge by connecting / disconnecting while the phone is down is not a good advice because li-ion batteries also don't like overcharging.
To be sure that the battery is fully charged due to its ability it is sufficient to let the phone be conectet to charger or usb overnight.
Android uses the voltage of the battery to estimate (!) the % charge value.
Android supposes the battery is fully charged when it enters the voltage of about 4.2 Volt which is the charging cut-off voltage for li-ion cells.
Now when charging again the conceded voltage is reached more quickly than estimated by android, so the system is 'surprised' of this rapid charge and changes the % value to 100% because the conceded voltage is reached more quicklyy as supposed.
(Try to fill a 0.5ltr beer bottle into a 0.33 glass)
This is the normal of aging for li-ion batteries.
Consider for yourself if it's acceptable for you or if you should by a new battery.
by the way... be careful with cheap china batteries for 10$.
Offers with exaggerated values (up to 1600mAh) will mostly keep their promises
only for the first two or three charges only and will than fall back to 800 mAh or even less !
Greetz
Pudel

Yeah...
My battery started to do the same thing for a week or two. It will charge to 86% then it jumps to 100%, saying it's charged.

This is normal afaik, nothing to worry about.
Sent from my Desire HD using xda premium

solve
actually，it's the problem of your rom , in the framwork.apk . unzip it you will get a lot of battery icon form 1%to 100% in the res file ，if it made mistake，that 'your problem. you can go to uot kitchen to coustom it again.

Nope!
I've solved my problem. I've bought a new (original) htc battery, and the new one works great. I haven't reflashed the rom, or made any new modification. Just added the new battery.
So, yes, it's a faulty battery.

LendLord said:
Hi, sry for my english=(
When i charge my battery its normally charge to 80% and then becomes 100%.
Try calibrate battery but this doesnt help. Also try another roms and kernels.
Is it a battery issue?
Click to expand...
Click to collapse
Download Current widget from market and charge ur phone then wait for the 0 ma then download the battery calibration app from market too and calibrate and unplug ur phone, u can aslo reboot to recovery and wipe battery stats hope it helped you

[Q] This is not the usual "battery thread"

I understand this is a sensitive subject to bring up, as there are 10 battery threads popping up each day.
But I think I have an unusual battery problem...
My Galaxy Nexus eats pretty much the same amount of juice whether it's powered on or completely powered off, and I get about 8h out of my batteries.
I have 3 batteries, and all of them give me about the same battery time.
I just did a short test:
1. Charge battery in cradle to full.
2. Put the fully charged battery into the phone.
3. Power on phone, and check battery - 99%
4. Power off.
5. Power on the phone 30 min later, and the battery is down to 91%
Can anyone out there give me a hint as to what can possibly drain my battery when the phone is powered off?

pejan said:
I understand this is a sensitive subject to bring up, as there are 10 battery threads popping up each day.
But I think I have an unusual battery problem...
My Galaxy Nexus eats pretty much the same amount of juice whether it's powered on or completely powered off, and I get about 8h out of my batteries.
I have 3 batteries, and all of them give me about the same battery time.
I just did a short test:
1. Charge battery in cradle to full.
2. Put the fully charged battery into the phone.
3. Power on phone, and check battery - 99%
4. Power off.
5. Power on the phone 30 min later, and the battery is down to 91%
Can anyone out there give me a hint as to what can possibly drain my battery when the phone is powered off?
Click to expand...
Click to collapse
your batterstats can be off a little, or your 3 batteries are bad.

pejan said:
I understand this is a sensitive subject to bring up, as there are 10 battery threads popping up each day.
But I think I have an unusual battery problem...
My Galaxy Nexus eats pretty much the same amount of juice whether it's powered on or completely powered off, and I get about 8h out of my batteries.
I have 3 batteries, and all of them give me about the same battery time.
I just did a short test:
1. Charge battery in cradle to full.
2. Put the fully charged battery into the phone.
3. Power on phone, and check battery - 99%
4. Power off.
5. Power on the phone 30 min later, and the battery is down to 91%
Can anyone out there give me a hint as to what can possibly drain my battery when the phone is powered off?
Click to expand...
Click to collapse
If your phone is draining a significant amount of battery over a matter of several hours....say...20-30% or more during an eight hour period of being turned off, then something is wrong with your phone or batteries (less likely with all three).

I suppose it's possible that all 3 batteries are bad, but I find it unlikely as I didn't buy them at the same time.
I have tried to reset the battery stats from the CWM recovery menu, but I read earlier today that resetting the battery stats does not influence battery time.
8h, then the phone shuts off.
Or leaving the phone powered off for about the same time, I can't power it on as the battery is completely drained.

Once your battery is fully charged it will stop charging the phone but continue to display that it's "charged" until it drops below 90%.
After you restart the phone it will display the current charge.
Sent from my Galaxy Nexus using xda premium

El Daddy said:
Once your battery is fully charged it will stop charging the phone but continue to display that it's "charged" until it drops below 90%.
After you restart the phone it will display the current charge.
Sent from my Galaxy Nexus using xda premium
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Click to collapse
His batteries die when the phone is off. Did you even read the thread?
Sent from my GT-I9300 using Tapatalk 2

joshnichols189 said:
His batteries die when the phone is off. Did you even read the thread?
Sent from my GT-I9300 using Tapatalk 2
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Click to collapse
Yes I did read his post. I wrote what I thought was happening. It has been a common thing people have been confused about on android since day one.
In other news... You sure love your condescending replies don't you?
Sent from my Xoom using xda premium

El Daddy said:
Yes I did read his post. I wrote what I thought was happening. It has been a common thing people have been confused about on android since day one.
In other news... You sure love your condescending replies don't you?
Sent from my Xoom using xda premium
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Click to collapse
When your battery dies when it is off it is not doing what you are describing.
Implying you didn't read.
Sent from my GT-I9300 using Tapatalk 2

El Daddy said:
Once your battery is fully charged it will stop charging the phone but continue to display that it's "charged" until it drops below 90%.
After you restart the phone it will display the current charge.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
Fyi that was only true on previous nexus like the nexus one. The gnex driver does not work this way anymore.

Might be a rouge app. Post a picture of your battery stats.
Swyped on my CM9 Galaxy Nexus

The other question is if the problem is a new one or something that's been going on since the phone was new?

He said even if his phone is off.
All these points to hardware issue.
Sent from my Galaxy Nexus using XDA

It is weird that the batteries drain when the phone is off.
Heck, even with only display off you should get even longer battery life.
But.... eight hours of battery life per day for the Gnex sounds "Normal" and "Right" to me!
If all three batteries are the same, than you should check the next logical step. Bigger Batteries.
Here is one from Amazon...
"Seidio BACY38SSGNLN-BK Innocell 3800mAh Super Extended Life Battery"

Hardware issue with the phone.
There is no way you should be draining a charged cell in 8 hours.
..this might be silly...but have you tried charging the batteries in the phone itself? (sounds like you charge them externally only)

defective hardware
I agree that it is probably defective hardware.
When a device is powered off, the battery should drain very slowly.
It might still be helpful if we could see a picture of your battery stats.
Here is mine, and you can see my screen is taking most of the battery life.
Which is because I have it set for max brightness.

[Q] Charging speed indicator

Coming from a galaxy S3, there were apps, including one called "Galaxy charging lite",
which measured how fast the charger charges the phone's battery (mah rate).
I can't find an app which works the same for the LG G3.
Does anybody know of an app which measures the mah rate in the LG G3?
Thanks in advance!

Gsam battery monitor

Another app which provides weird results. Says Im charging at -314ma. This is not true.

Discharge is positive so net charge current would be negative if the battery is charging.

jobella said:
Discharge is positive so net charge current would be negative if the battery is charging.
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Click to collapse
Yeah, but 300mah is not correct. Should be closer to 1500mah.

I get a full charge between 45 minutes to an hour fifteen. Ill time it when it goes completly dead today. But i feel like id be around 2300mah charge at least