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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%"
Click to expand...
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
Click to expand...
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
I have had the ultimate in crappy battery life since day one with my Vibrant. I have tried reconditioning, task killers, freezing apps, etc., etc. Very minimal gains and, in some cases, worse battery life. These things were draining just sitting on our pockets.
Here's where it gets weird. My wife also has a Samsung Vibrant and was getting the same horrible battery life. We were both charging dead Vibrants half way through the day. Granted, we are both moderate to heavy users but I expected more. A week ago, my wife was still sitting at 80% by lunch time while I was looking at 27%. Huh? I asked her what she did and she had no idea except that she had downloaded a battery monitoring app the day before. I thought it made no sense that this could have anything to do with it so I brushed it off. Over the next few days she was still getting killer battery life throughout the day.
So....I decided to give it a shot just to be sure it wasn't that app. Well, just before bedtime, my battery was it 7%. I downloaded the battery app, plugged in my Vibrant and hit the hay. By noon the next day I was still over 80% I have no idea why but I know it's working for both of us and it has to have something to do with this app.
I'm no programmer and I certainly have no vested interested in any android apps. We just stumbled on this and it works. Would anyone out there have a clue why?
I'm not sure if posting the name of the app breaks any xda rules so I'll wait.
Ever since i've been on JK2 Froyo my battery life has been excellent. But i'm interested in hearing which app you're talking about
Castle5665 said:
I have had the ultimate in crappy battery life since day one with my Vibrant. I have tried reconditioning, task killers, freezing apps, etc., etc. Very minimal gains and, in some cases, worse battery life. These things were draining just sitting on our pockets.
Here's where it gets weird. My wife also has a Samsung Vibrant and was getting the same horrible battery life. We were both charging dead Vibrants half way through the day. Granted, we are both moderate to heavy users but I expected more. A week ago, my wife was still sitting at 80% by lunch time while I was looking at 27%. Huh? I asked her what she did and she had no idea except that she had downloaded a battery monitoring app the day before. I thought it made no sense that this could have anything to do with it so I brushed it off. Over the next few days she was still getting killer battery life throughout the day.
So....I decided to give it a shot just to be sure it wasn't that app. Well, just before bedtime, my battery was it 7%. I downloaded the battery app, plugged in my Vibrant and hit the hay. By noon the next day I was still over 80% I have no idea why but I know it's working for both of us and it has to have something to do with this app.
I'm no programmer and I certainly have no vested interested in any android apps. We just stumbled on this and it works. Would anyone out there have a clue why?
I'm not sure if posting the name of the app breaks any xda rules so I'll wait.
Click to expand...
Click to collapse
I don't believe nothing is wrong with posting the name of an app. If it helps, then why not?
Yeah dude hook it up
Still flashing , thanks to odin & tw
mainevent3405 said:
I don't believe nothing is wrong with posting the name of an app. If it helps, then why not?
Click to expand...
Click to collapse
I agree. I just didn't want to be seen as peddling a product here.
It's called BatteryTime. It's free although, I believe there is a pay version. I didn't adjust any settings. Just installed it, charged over night and I can't believe the difference nor understand why it made such a huge difference. I unplugged 4 hours ago and have 98%. Still a mystery to me but I'm not complaining.
There's like 4 of the same app on the market x)
What is the full name?
OH and thanks, I installed it, I'll report back with results.
draikz said:
There's like 4 of the same app on the market x)
What is the full name?
OH and thanks, I installed it, I'll report back with results.
Click to expand...
Click to collapse
Just Looked again and you're right. There are 4 versions there. I'm currently using the "BatteryTime Lite" version.
The only thing that I can think of to rationalize this huge difference is that the battery percentage was being reported incorrectly before. I may have had a charge that would last all day or longer but it was displaying an accelerated discharge rate which would kill my Vibrant prematurely. For one reason or another, this app appears to have corrected that and the indicator is (I hope) reporting the correct battery life now.
Does that make any sense?
Castle5665 said:
The only thing that I can think of to rationalize this huge difference is that the battery percentage was being reported incorrectly before. I may have had a charge that would last all day or longer but it was displaying an accelerated discharge rate which would kill my Vibrant prematurely. For one reason or another, this app appears to have corrected that and the indicator is (I hope) reporting the correct battery life now.
Does that make any sense?
Click to expand...
Click to collapse
Thanks for sharing. I will give it a try.
Update:
I found this somewhat disappointing. I rebooted my phone for the first time in about a week and on boot up the indicator is displaying significant drain again. I was at 96% before boot and 56% after? I'm going to recharge to full again and see if I still enjoy the same battery life.
Now I'm really confused. Sent an email to developer.
judging by the app description and most of the comments - the app doesn't actually *do* anything. It merely reports the battery differently.
No amount of software will change how much charge a battery can hold. The only thing that's different is how it's being reported.
reuthermonkey said:
judging by the app description and most of the comments - the app doesn't actually *do* anything. It merely reports the battery differently.
No amount of software will change how much charge a battery can hold. The only thing that's different is how it's being reported.
Click to expand...
Click to collapse
Indeed, and that was my point to begin with. Originally, the battery indicator reported as critically low in no more than 6 hours. Soon after, the phone would shutdown until put on the charger. With this app I am able to get through the day reporting roughly 30% at bedtime around 10pm. Of course, that is subject to change on a reboot....until fully charged again. This is the mystery.
Yeah, there is funky stuff going on with battery meters. One that is included with the Obsidian Roms is Battery Left, currently, this is showing a 50% charge and 10:19 left. Next to it is Juice Plotter which is showing 21h 11m left. According to the system, i am at 71% Power and it has been unplugged for 6 hours. From experience, I know that the 21h remaining is actually accurate and Battery Left is completely dorked.
The point being, you can't always trust the battery meter.
So I installed a monitor also to try and figure out what was killing my battery 30+% over night and I had the same reaction....I woke up to a 10% loss. I realized what is probably happening is since this app is monitoring the phone all night...whatever app is draining the battery is probably a daemon that only runs when the CPU goes really idle for a certain period of time. More than likely that app inadvertently gave you better battery life because it runs in the foreground and marks your phone as being active so whatever app was killing battery never ran.
Castle5665 said:
The only thing that I can think of to rationalize this huge difference is that the battery percentage was being reported incorrectly before. I may have had a charge that would last all day or longer but it was displaying an accelerated discharge rate which would kill my Vibrant prematurely. For one reason or another, this app appears to have corrected that and the indicator is (I hope) reporting the correct battery life now.
Does that make any sense?
Click to expand...
Click to collapse
I think you've hit the nail on the head. Since day one, I have had buggy battery reporting. For instance, if I reboot the phone while it is plugged in, the reported battery level changes dramatically.
Edit: your later post supports this idea even further.
I installed this on my phone. This program does not attempt to save battery life or control anything on your phone. It does offers "Tips" to save battery life. Its main purpose is to indicate, based on your current level of charge, how long your battery should last given different circumstances - ex. idle, talk time, video time, audio time, etc... Thus the name BatteryTime.
That's all that it does. Any perception of a longer lasting battery may have been an anomaly as does happen sometimes with our phones. One day you'll seem to be getting awesome battery life (and there is likely an underlying reason which we'll never figure out, but which jives with the battery) and the next day it is back to draining quickly as normal.
There are three certainties in life: death, taxes, and posts about battery life in smart phone forums.
Anyone have the issue where they charge the phone overnight, the phone reads 100% in the morning, you unplug it and you are immediately down to 7% battery? It seems to happen to me at least twice per week. It is a terrible bug.
i dont get it you said that before the battery wasnt being read correctly so it shut off fast but now with the app it reads correctly and last you the whole day with 30% left to spare?? wouldnt that technically mean it increased battery because you got it to last all day plus some? just by making the phone read the battery correctly.
Wrapping these all up in the same post because they are related.
I have found that the battery indicator is pretty inaccurate and will jump from say 15% straight to 10%. This goes for the stock battery usage meter in settings, display in the top right on the staus bar, battery widgets, and even setcpu. Anyway to make this actually accurate and provide real time indication?
Also I have been playing around with setcpu and Juice Defender and have found that they essentially do the same thing. They both under clock the CPU at certain times except setcpu doesnt disable wifi and other things. I figured it would be bad to run both so I disabled Juice Defender. If I have to pick one, which should I use?
circle battery widget can indicate the exact percentage.
vista1984 said:
circle battery widget can indicate the exact percentage.
Click to expand...
Click to collapse
Thank you sir
Battery Monitor by SIMMO Publications is better than circle battery imo
Supish said:
Battery Monitor by SIMMO Publications is better than circle battery imo
Click to expand...
Click to collapse
Just as accurate as circle battery?
Just out of curiousity, does anyone use Juice Defender?
Sent from my Atrix using XDA App
vista1984 said:
circle battery widget can indicate the exact percentage.
Click to expand...
Click to collapse
circle battery widget and other apps only estimates the exact percent, the atrix hardware only allows for 10% increments.
This is not what I have found with circle battery and battery monitor by simmo. They show exact percentages on my phone.
Sent from my Atrix using XDA App
Yeah, I use JuiceDefender.
Inspiredwire said:
Yeah, I use JuiceDefender.
Click to expand...
Click to collapse
Do you also use setcpu? Did you seem to definitely notice a difference using Juice Defender? Or more importantly any features of the phone change? For example every time you shut the screen on and turn it back on, does it have to find wifi again? Or what about when the screen is off, does it shut down data connections completely so that you don't even receive email notifications?
Sent from my Atrix using XDA App
I used Juice Defender on the atrix until recently. It worked well. I had to set to pull data for one minute every 15 minutes (and it wouldn't stop downloading at the end of the minute unless it was finished pulling what it wanted to. Sure I no longer got my email responded to the second I received it, but it made my battery last ~50% longer.
I also used setcpu to underclock when the battery was <20% and when the screen was off. Juice Defender has this feature for other phones, however, didn't seem to support underclocking on the Atrix.
Thanks for the info
Sent from my Atrix using XDA App
seh6183 said:
This is not what I have found with circle battery and battery monitor by simmo. They show exact percentages on my phone.
Sent from my Atrix using XDA App
Click to expand...
Click to collapse
they will show 1% increments but these are just estimates as the atrix hardware cannot show 1%. programs like circle battery widget are not accurate even when they are showing 1%. check out the thread below.
http://forum.xda-developers.com/showthread.php?t=965682
neotekz said:
they will show 1% increments but these are just estimates as the atrix hardware cannot show 1%. programs like circle battery widget are not accurate even when they are showing 1%. check out the thread below.
http://forum.xda-developers.com/showthread.php?t=965682
Click to expand...
Click to collapse
they are pretty DAMN accurate, Ive been using the circle batt widget for almost a month now.
I switched to the simmo one since it has a notification bar batt %
neotekz said:
they will show 1% increments but these are just estimates as the atrix hardware cannot show 1%. programs like circle battery widget are not accurate even when they are showing 1%. check out the thread below.
http://forum.xda-developers.com/showthread.php?t=965682
Click to expand...
Click to collapse
I don't think people here realize how circle battery widget (and other like it work). Nearly all battery widgets just read what the system is saying which is obviously going to be in 10%'s on this phone. What circle battery and a few others do is read the actual voltage left in the battery and make an accurate % report which is why it's 100% accurate down the %. It doesn't matter what battery capacity the battery has either because every Li battery has the same full and empty voltage. So yes circle battery widget is 100% accurate.
Sent from my MB860 using Tapatalk
^Exactly. Even without knowing that, you can just watch the circle battery widget and the reported system percentage. The circle battery widget always changes consistently with the normal system value, so at the very least it's as accurate as any of the meters displaying the 10% increments.
neotekz said:
they will show 1% increments but these are just estimates as the atrix hardware cannot show 1%. programs like circle battery widget are not accurate even when they are showing 1%. check out the thread below.
http://forum.xda-developers.com/showthread.php?t=965682
Click to expand...
Click to collapse
Not sure where you got the idea that circle battery widget was inaccurate. Like I mentioned above, anyone can observe that it is consistent with the system report, so it at least averages out to be fairly accurate for every 10% block.
Another thing to remember, though a small detail, is the fact that the system displays increments of 5% starting at 15%. That doesn't change much, but that means it's not only 10% increments.
Clienterror said:
I don't think people here realize how circle battery widget (and other like it work). Nearly all battery widgets just read what the system is saying which is obviously going to be in 10%'s on this phone. What circle battery and a few others do is read the actual voltage left in the battery and make an accurate % report which is why it's 100% accurate down the %. It doesn't matter what battery capacity the battery has either because every Li battery has the same full and empty voltage. So yes circle battery widget is 100% accurate.
Sent from my MB860 using Tapatalk
Click to expand...
Click to collapse
im not saying you are wrong here but where did you get the info that it measures voltage? even if it does im not convinced its that easy to
accurately measure capacity. why are all these phone manufactures have problem with having to recalibrate batteries and wiping stats? why not just always measure voltage and always have accurate numbers?
im no expert im just going with what designgears posted in his thread. he is a developer that made lots of roms with very accurate battery monitor that i used for my captivate. he was trying to make one for the atrix but was told that the hardware only supports 10%. if its was as easy as measuring the voltage then why didnt he just do that?
ive used circle battery and battery monitor that both showed 1% increments for a few weeks and noticed that it was not very accurate. its hard to explain but when i was using the phone it would decrease at a steady rate then when i have the screen off for a few mins it would quickly drop 2-3% (within the few mins that i had the screen off) then it would slow down again, this is why i think its an estimate. dont get me wrong its not too bad for an estimate but if you ever used cognition rom or any other roms on other phones with good battery mods you will see what a really accurate battery monitor is, you can set a timer to it...
neotekz said:
im not saying you are wrong here but where did you get the info that it measures voltage? even if it does im not convinced its that easy to
accurately measure capacity. why are all these phone manufactures have problem with having to recalibrate batteries and wiping stats? why not just always measure voltage and always have accurate numbers?
im no expert im just going with what designgears posted in his thread. he is a developer that made lots of roms with very accurate battery monitor that i used for my captivate. he was trying to make one for the atrix but was told that the hardware only supports 10%. if its was as easy as measuring the voltage then why didnt he just do that?
ive used circle battery and battery monitor that both showed 1% increments for a few weeks and noticed that it was not very accurate. its hard to explain but when i was using the phone it would decrease at a steady rate then when i have the screen off for a few mins it would quickly drop 2-3% (within the few mins that i had the screen off) then it would slow down again, this is why i think its an estimate. dont get me wrong its not too bad for an estimate but if you ever used cognition rom or any other roms on other phones with good battery mods you will see what a really accurate battery monitor is, you can set a timer to it...
Click to expand...
Click to collapse
I've had a Captivate since release back on July 17th (or 18th I forget) so I fully understand who DG is (And I'm not to happy he jumped ship completely on this phone like he did but it's his choice and it is what it is). Ok so even though the hardware on the Atrix isn't capable of reading the battery in single percents only in 10's it still reports the actual mV of the battery. If you open "Spare Parts" app for example and go to "Battery Information" it displays your current mV of your battery. Now almost all modern Lithium Poly batteries are considered "Full" at 4.2 mV (Obviously this can vary slightly even within the same battery for the same phone model due to manufacturing tolerances) and "Empty" at 3 mV (I think it's REALLY dead at around 2.5 mV but the phone has a built in safety feature to prevent this because if it drops to low the battery wont even take a charge). Here's a link Lithium Poly Battery to this data. All the Circle Battery Widget is doing is assuming your battery is at 100% at 4.2 mV and 0% at 3 mV, then if just divides your current mV by 4.2 and turns the decimal into a percent and now you have your display %.
Now the reason it may drop faster like you said is because the phone OS itself reports the battery mV and I doubt it checks it every second. So say the phone OS checks the mV every 5 minutes (Just guessing I have no idea) and it reports RIGHT before you play a game or a few youtube videos then you stop playing (phone still shows the same percent) and put your phone to sleep then wake it 2 minutes later and now you've lost 2% battery "Doing nothing" but really the OS just didn't refresh your battery mV before you turned the screen off.
As far as how I know Circle battery widget does this is basically common sense, obviously it isn't it getting info directly from the system battery percent because it won't read any more accurate than 10's. The only way it could get even a relatively accurate percent is by the method I stated above because obviously most other battery meters are just repeating whatever the system is stating in 10's.
That's basically all I've gathered about how it works, I could be completely wrong and if I am I'd love to hear from someone who actually knows because I love to know how stuff works
thunderpack said:
I used Juice Defender on the atrix until recently. It worked well. I had to set to pull data for one minute every 15 minutes (and it wouldn't stop downloading at the end of the minute unless it was finished pulling what it wanted to. Sure I no longer got my email responded to the second I received it, but it made my battery last ~50% longer.
I also used setcpu to underclock when the battery was <20% and when the screen was off. Juice Defender has this feature for other phones, however, didn't seem to support underclocking on the Atrix.
Click to expand...
Click to collapse
can you share your settings for jd and setCPU when you used it? sounds like you had a tweaked out well.
Hello
I am the author of Battery Monitor (SIMMO Publications), if you're getting 1% values then your phone is either returning accurate values through the Android API, or there exists a system charge_counter file that is updated by the operating system. It does not estimate the value.
Motorola devices (Atrix, Droid2, DroidX), for some reason, choose to ignore the 1% values stored in this system file. The file is hidden, and not many people know about it (apparently). But it IS updated, so these 10% only Motorola devices are actually capable of 1% level changes.
I hope that helps.
I checked my battery monitor widget today am noticed something very strange. It showed me 40% charged when I was sure it was only 35% charged before I went bed! WTF did it charge itself? As you can see from the screenshots the phone was not on charge and was awake for most of the night which has never happened before. I have not installed any new apps in the last few days I have never seen this before on any of my android phones over the years. After 1 month of using the note this is the first glitch i've noticed (if it is a glitch). I am on stock LA4.
Anyone have any ideas as to why this happened?
I'm not complaining ( wish it happened every night!) just curious.
I have noticed the same strange thing with ICS.
did you try pinching your arm?
/Jeriz
It is probably/maybe your battery stats that was not exactly "right" and might "recalibrate" your battery stats to the true value.
The simplest answer is always the true one: It is having trouble reading your battery right. Happens with mine too sometimes.
LOL I had the same thing happened to me.
First day with my note. And so far I am loving it.(despite colour rendering issues , and a very lagging stock keyboard)
Sent from my GT-N7000 using xda premium
Maybe the phones are evolving and learning to use the sensor on the Front to charge itself lol
Sent from my Galaxy Note
This has happened to me several times already since the Galaxy S days.. sometimes after a reboot the battery looses 50% and slowly charges back up its quite funny and strange, never happened to my note though.
What do you think happens if some of the services is not needed anymore and stopes relaying,the battery % estimation will go up.
georgios73 said:
I checked my battery monitor widget today am noticed something very strange. It showed me 40% charged when I was sure it was only 35% charged before I went bed! WTF did it charge itself? As you can see from the screenshots the phone was not on charge and was awake for most of the night which has never happened before. I have not installed any new apps in the last few days I have never seen this before on any of my android phones over the years. After 1 month of using the note this is the first glitch i've noticed (if it is a glitch). I am on stock LA4.
Anyone have any ideas as to why this happened?
I'm not complaining ( wish it happened every night!) just curious.
Click to expand...
Click to collapse
Mine charged itself too.
Went from 30% to 50% when I was out.
I thought it has some solar panel hidden beneath.
hagba said:
What do you think happens if some of the services is not needed anymore and stopes relaying,the battery % estimation will go up.
Click to expand...
Click to collapse
Wtf are you talking about? That's not any kind of estimate of lifetime, that's a report on amount of energy left. And in this case, specifically, a bug in it's reading.
Livewings said:
Mine charged itself too.
Went from 30% to 50% when I was out.
I thought it has some solar panel hidden beneath.
Click to expand...
Click to collapse
That one a good idea. Smartphone company should consider to put it in every phone in future..lol
Sent from my GT-N7000 using XDA App
When I saw this thread, I immediately opened my battery stats only to see this:
lulz
Viamonte said:
Wtf are you talking about? That's not any kind of estimate of lifetime, that's a report on amount of energy left. And in this case, specifically, a bug in it's reading.
Click to expand...
Click to collapse
You need to review your facts make a bit more research, the report is based on the fact that how many apps and services are you using,say if the wifi is on, it will show you certain %, however if you turn it off will report you that it has increased, depending on the running apps and services how much battery is left, my laptop does it all the time,unless you are living in pre Smart Battery Meter era.
I have to agree that if the % relies on the voltage (as I am sure it must do to some extent, but I am only guessing), stopping heavy services will allow the voltage to increase and the app may see that as a gain.
Alternatively we have discovered Samsung's secret OTA charging method! This explains why some phones have terrible battery life, they are being sucked dry by nearby 'Vampire Notes'!
Now, if we could just work out how we could charge all Notes by sucking iPhones dry ....
turshija said:
When I saw this thread, I immediately opened my battery stats only to see this:
lulz
Click to expand...
Click to collapse
Mega wtf. :O
Sent from my GT-N7000 using xda premium
Battery is trolling
The Galaxy Note battery is a three terminals battery. So I think that the % state of charge of this battery is directly calculated from its output voltage.
The voltage decrease as the charge decrease, so it is possible to evaluate the residual charge in the battery.This is not a very precise method but it is quite simple to implement.
After a high current drain there is what is called a ''voltage recovery'', the battery voltage increase slowly a little bit as the current is stopped. So you may think that the battery get back energy, but unfortunately it is only an artifact.
Yesterday I showed you all how my battery indicated that it had charged itself.
So guess what folks today when I checked the complete opposite happened!!
Again as you can see it went from 48% just before I went to sleep only to wake up to a dead phone (switched off). Upon rebooting it showed only 9% !!
Now I can cope with it going up but going down is not good.
Hope its not a hardware problem and just a faulty battery.
lets see what happens tomorrow maybe it will explode!
I'm an EE (election engineering) student. Michel_7 is right. Lithium ion batteries experience a voltage sag during high current draws. Afterwards there is some rebound, both as the battery cools if over temp, and with a period of lower activity. This is in part due to the fact that batteries have internal resistance, and as they supply power, they also dissipate some internally. This is of squared proportion to the current drawn. IE current^2 * resistance. Battery resistance constant, so the more power the phone uses, the more the battery does. This is what heats up the battery.
Sent from my GT-N7000 using xda premium
I've just jumped ship to the LG G4 after I was getting annoyed with my s6 battery. I hated the fact that for it to be vaguely good, you had to disable pretty much everything!
I've just been doing a little tweaking on my new G4 and I let it sit with all my normal apps installed to test standby. I just got to 8 hours 44minutes before the battery dropped to 99%. ( I was playing with it since the 8 1/2 hour mark).
How? I installed Greenify and Amplify.
ROM: S3V3N's rom v 6.0
Greenified:
Facebook ( Wake up path cut off)
Facebook messenger ( wake up path cut off)
My EE
One drive
Onenote
Facebook is known to be a big drain, but I use it and don't like to fully disable it. With these settings I still get Facebook notifications!
I still receive gmail etc too. It all seems to work as it should, but doesn't drain for no reason!
The typical LG (G3/G4) slow-drop-from-100-percent "issue".
G4 has it (using a proper setup), G3 has it. It says *nothing* :good:
Case in point, very old G3 pic (8 months ago or so):
https://www.dropbox.com/s/k6aanjf6bgcpygj/BFE6123FCFDA_LG G3_2_PORTRAIT.png?dl=0
Once the battery drops to 99, the "real" drain starts
Ahaaa thats not how it works. Keep using the phone till you get to 10% and then compare to the s6. You will notice s6 has better battery life.
Sent from my LG-H815 using Tapatalk
I've never understood why people try to get every possible second out of the battery. They disable half the functions of the phone just to get a better battery graph. I prefer to enable everything and use the phone as it was designed for. Otherwise, you may as well just buy a basic Nokia.
the_scotsman said:
I've never understood why people try to get every possible second out of the battery. They disable half the functions of the phone just to get a better battery graph. I prefer to enable everything and use the phone as it was designed for. Otherwise, you may as well just buy a basic Nokia.
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Click to collapse
Hahahaha funny but so true. Lol
Sent from my LG-H811 using Tapatalk
Great job. I like to keep most features on but I don't want to be a data generator for Google.
I also limit RILJ and WiFiOffdelayifNotUsed in Amplify
Greenify: nope.
Amplify: nope.
Amazing (meaningless) 100%-99% drain? Of course.
Having a flat line for 8 hours when battery for example is at 25%, okay, yes then I'll be amazed. But from 100 to 99? Nope. Typical LG issue.
Im at 88% after 47 minutes screen time and 20hours 15 mins on battery. With only 2 bars of mobile signal.
Id say that's pretty damn good considering i haven't had to disable any features on the phone!
My S6 was nowhere near as good.
Post using Gsam at the end of the battery cycle, say 10%. with the app sucker list.
One Twelve said:
Post using Gsam at the end of the battery cycle, say 10%. with the app sucker list.
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Click to collapse
Just installed Gsam, checked after half hour and guess what..
Top of app sucker list.
1)Android system : 10%
2) GSam battery monitor: 8.1%
So looks like Gsam will screw up my test as its now causing drain :/
f1ux said:
Just installed Gsam, checked after half hour and guess what..
Top of app sucker list.
1)Android system : 10%
2) GSam battery monitor: 8.1%
So looks like Gsam will screw up my test as its now causing drain :/
Click to expand...
Click to collapse
The irony
The old eternal question about battery.....? Guys you bought the phone to be as it is. You can take spare battery or charger with you. Unless you go to hike mount Everest. Even then you have solution.
But one i am agreed is that we shouldn't be Googles data provider.
f1ux said:
Just installed Gsam, checked after half hour and guess what..
Top of app sucker list.
1)Android system : 10%
2) GSam battery monitor: 8.1%
So looks like Gsam will screw up my test as its now causing drain :/
Click to expand...
Click to collapse
I don't know why gsam is even in that list. anyone know ?
But let it run down to 10% and post the summary.
One Twelve said:
I don't know why gsam is even in that list. anyone know ?
But let it run down to 10% and post the summary.
Click to expand...
Click to collapse
Could be a while before im at 10%!
Gsam says it was plugged in 11hours ago. It wasnt! That was when gsam was installed
And before anyone says 'you havent used your phone' that is the point of this test!
You cant expect a phone to last long when you're using it if it doesnt last long when you're not using it!
i get amazing battery life just by disabling Google location services and Google Now... ever since i did that, my battery life rivals my old iPhone 6 Plus in stand-by mode, i usually get a 3-5% battery drain while asleep at night (7-8 hours)
f1ux said:
Could be a while before im at 10%!
Gsam says it was plugged in 11hours ago. It wasnt! That was when gsam was installed
And before anyone says 'you havent used your phone' that is the point of this test!
You cant expect a phone to last long when you're using it if it doesnt last long when you're not using it!
Click to expand...
Click to collapse
Averages per complete charge.... Screen on is just over 3hr. Nothing special. Battery can last for a week if you never turn the screen on.
f1ux said:
Could be a while before im at 10%!
Gsam says it was plugged in 11hours ago. It wasnt! That was when gsam was installed
Click to expand...
Click to collapse
then you will run it again once you recharge.
And before anyone says 'you havent used your phone' that is the point of this test!
Click to expand...
Click to collapse
stats at 10% otherwise it means squat.
so you know what we want to see.
1. gsam summary page, along with the app lists ( this means 2 screen grabs)
2. stock battery usage with the graph page (this has apps listed as batery consumers)
3. click the graph and post that too (this has no apps instead it has lines at the bottom showing when gps, wifi, cell, awake and charging bar charts)
total 4 screen grabs.
You cant expect a phone to last long when you're using it if it doesnt last long when you're not using it!
Click to expand...
Click to collapse
how long is long for you ? in terms of sot and run time.
And what do you consider acceptable in terms of sot/run time ?
One Twelve said:
then you will run it again once you recharge.
stats at 10% otherwise it means squat.
so you know what we want to see.
1. gsam summary page, along with the app lists ( this means 2 screen grabs)
2. stock battery usage with the graph page (this has apps listed as batery consumers)
3. click the graph and post that too (this has no apps instead it has lines at the bottom showing when gps, wifi, cell, awake and charging bar charts)
total 4 screen grabs.
how long is long for you ? in terms of sot and run time.
And what do you consider acceptable in terms of sot/run time ?
Click to expand...
Click to collapse
On my s6 the phone never lasted more than 2 days and i was lucky to get 3 hours screen time.
Most i ever had on the s6 was 4 hours with lower brightness than i have on the G4.
I don't need gsam or any other app to show me the g4 is lasting longer.
f1ux said:
And before anyone says 'you havent used your phone' that is the point of this test!
You cant expect a phone to last long when you're using it if it doesnt last long when you're not using it!
Click to expand...
Click to collapse
I'd say that your test is completely pointless. You're just testing the battery consumption of a brick in your pocket!
How realistic is it to carry around a smartphone that you don't use at all for >2 days.
In my view it's just a big waste of time what you're doing there...
Wastl0r said:
I'd say that your test is completely pointless. You're just testing the battery consumption of a brick in your pocket!
How realistic is it to carry around a smartphone that you don't use at all for >2 days.
In my view it's just a big waste of time what you're doing there...
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Click to collapse
Not really, because before the tweaks, the standby drain was much bigger.
Lower standby drain = more screen time, so now I know it drains less in standby I should get better battery life in ' normal' usage and more screen time.
A pointless test is person X saying " My battery life is awful" and not stating which apps they have installed and what their mobile signal is like.